2012 package-type pressure reducing valve stationswater19.com/2012 prv stations bid package...

Water District 19

BID PROPOSAL, CONTRACT DOCUMENTS, AND SPECIFICATIONS FOR:

2012 Package-Type

Pressure Reducing Valve

Stations

Project No. 111-044.02.201

FALL 2012 Water District 19 17630 100th Avenue SW Vashon, Washington 98070 Phone: (206) 463-9007 Contact: Jeff Lakin

RH2 Engineering, Inc 12100 NE 195th Street Suite 100 Bothell, Washington 98011 Phone: (425) 951-5360 Contact: Kyle Pettibone, P.E.

Water District 19

BID PROPOSAL, CONTRACT DOCUMENTS, AND SPECIFICATIONS FOR:

2012 Package-Type

Pressure Reducing Valve

Stations

Project No. 111-044.02.201

FALL 2012

THE CONTENT OF THIS DOCUMENT, AS A MEANS OF PROFESSIONAL SERVICE, IS PROTECTED BY 17 U.S.C. § 101, ET SEQ. AS SUCH, IT SHALL NOT BE USED, IN WHOLE OR IN PART, FOR ANY OTHER PROJECT OR PURPOSE WITHOUT WRITTEN AUTHORIZATION FROM RH2 ENGINEERING. © 2012 RH2 ENGINEERING, INC.

9/14/20129/14/2012

Water District 19

2012 Package-Type Pressure Reducing Valve Stations

Table of Contents

i 9/14/12 12:37 PM J:\Data\W19\111-044\Task 4 - 2012 Pressure Reducing Stations\Advertisement for Bids.docx

© 2012 RH2 Engineering, Inc. Table of Contents

CALL FOR BIDS .............................................................................................................................................. 1

BIDDER’S PROPOSAL FORM .................................................................................................................... 3

GENERAL REQUIREMENTS .................................................................................................................... 4

General Description ................................................................................................................................. 4

Alternatives ................................................................................................................................................ 4

Acceptance ................................................................................................................................................. 4

Delivery ...................................................................................................................................................... 4

F.O.B. Point ............................................................................................................................................... 5

Method Of Award .................................................................................................................................... 5

Brand Name Equipment Specified ........................................................................................................ 5

Termination ............................................................................................................................................... 5

Additional Information ............................................................................................................................ 6

SPECIFICATIONS AND PROVISIONS ................................................................................................... 7

PART 1 GENERAL .................................................................................................................................... 7

1.1 Scope ........................................................................................................................................... 7

1.2 Reference Specifications, Codes, and Standards .................................................................. 7

1.3 Manufacturer/Supplier Submittals ......................................................................................... 8

1.4 Information to be Provided at Closeout ............................................................................... 8

1.5 Quality Assurance ..................................................................................................................... 8

1.6 Start-up Services ........................................................................................................................ 9

1.7 Warranty ..................................................................................................................................... 9

PART 2 PRODUCTS ................................................................................................................................ 10

2.1 General ..................................................................................................................................... 10

2.2 Experience Requirements ...................................................................................................... 10

2.3 Station Enclosure .................................................................................................................... 10

2.4 Piping ........................................................................................................................................ 11

2.5 Valves ........................................................................................................................................ 12

PART 3 EXECUTION ............................................................................................................................. 14

3.1 Delivery and Storage............................................................................................................... 14

3.2 Field Quality Control .............................................................................................................. 14

APPENDIX

Appendix A: Pressure Reducing Valve (PRV) Station Drawings

Appendix B: Vicinity Map

– 1 – 9/14/12 12:37 PM J:\Data\W19\111-044\Task 4 - 2012 Pressure Reducing Stations\Advertisement for Bids.docx

© 2012 RH2 Engineering, Inc. Advertisement for Bids

Water District 19

17630 100th Avenue SW

Vashon, WA 98070

CALL FOR BIDS

2012 Package-type Pressure Reducing Valve Stations

Notice is hereby given that sealed bids will be received by Water District 19 (District) at the District’s office (17630 100th Avenue SW, Vashon, WA 98070) or via mail (PO Box T, Vashon, WA 98070) until 1:00 PM on October 5, 2012 for furnishing three (3) package-type pressure reducing valve (PRV) station products to the District.

The outside of the envelope must have the following information:

1) Mailing Address: 17630 100th Avenue SW Vashon, WA 98070

2) Bid Description: 2012 Package-type Pressure Reducing Valve Station Products 3) Date of Bid Opening: October 5, 2012 (1:00 PM)

All bids must be submitted upon the attached Bidder’s Proposal Form. Bids will then be opened, read, and tabulated publicly. Proposals received after the date of bid opening will not be considered.

Firm prices are solicited for three (3) package-type PRV station products. No additional charges will be accepted for the following, including but not limited to freight, fuel, and other charges. Payment for purchases will be made according to State Statute, in the month following delivery and acceptance of the PRV station products by the District, provided a properly detailed invoice has been furnished by the supplier. The District does not guarantee to purchase any specific quantity and will not expect the suppliers to furnish or stockpile any specific quantities or products.

Deviations or alternatives from the provisions of these specifications will be considered to permit manufacturers to follow their standard manufacturing processes. Such deviations or alternatives may be approved, however, only at the sole discretion of the District and only if, in the District’s opinion, the alternatives do not adversely affect the operation, efficiency, effectiveness or life of the packaged PRV stations and appurtenances. All proposed deviations or alternatives, with full details, must be listed on the attached proposal, which is part of the bid, unless otherwise noted. The listing of such deviations or alternatives will indicate that the bid may be accepted only with such deviation, unless otherwise indicated by the Bidder. There shall be no deviations from the specifications except those that are listed as deviations on said bidder’s proposal and that are expressly approved as part of the Board’s acceptance of the bid.

Availability date of the packaged PRV stations will be a consideration in the acceptance of the bid. The bid proposal shall serve as the binding contract document for the purchase of the packaged PRV stations.

Contract documents may be obtained in person by visiting the District office at 17630 100th Avenue SW, Vashon, WA 98070 or online at the District’s website (http://www.water19.com).


© 2012 RH2 Engineering, Inc. Advertisement for Bids

The District reserves the right to reject any or all bids and to waive irregularities in the bid or in the bidding. The District hereby notifies all bidders that it will affirmatively ensure that in any contract entered into, pursuant to this advertisement, minority and women's business enterprises will be afforded full opportunity to submit bids in response to the invitation and will not be discriminated against on the grounds of race, color, national origin, or sex in consideration for an award.

No bidder may withdraw their proposal after the hours set for the opening thereof, or before award of contract, unless said award is delayed for a period exceeding 60 calendar days.

PUBLISHED:

Daily Journal of Commerce

Publish Date: September 17, 2012 & September 24, 2012


© 2012 RH2 Engineering, Inc. Bidder’s Proposal Form

BIDDER’S PROPOSAL FORM

The undersigned agrees to furnish the package-type pressure reducing valve (PRV) station products in accordance with the attached specifications, with no deviations except as noted. Prices quoted on this proposal shall be honored by the bidder for a period of 90 days from date of proposal.

SCHEDULE OF PRICES/PROPOSAL

Note: Unit prices of all items, all extensions and total amount of bid must be shown. Show unit prices in both words and figures and, where conflict occurs, the written or typed words prevail.

All bidders shall sign the proposal in the space provided.

The proposal, together with the General Requirements, Specifications & Provisions, Addenda and Plans, when endorsed by Water District 19, shall become a contract binding on both parties thereto, whereby the Bidder agrees to perform the complete contract work, as specified, and Water District 19 agrees to make payment to the Bidder, as specified, for said completed and accepted work.

Dated this _____________ day of ____________________________________, 20_________.

Bid Submitted By: _____________________________________________________________

Address of Bidder: __________________________________________________________

__________________________________________________________

Telephone: __________________ Fax: _________________ Email: ________________

Signature: _________________________________

Name Printed: _________________________________

Title: _________________________________

Acknowledgement of Receipt of Addenda:

No.________ Date___________________ Initials_______

No.________ Date___________________ Initials_______

Item Description Units Quantity Unit Price Unit Price in Words Total (Extended) Price

1

Package-Type Pressure

Reducing Valve Station -

Complete & Furnished

EA 3

$

$

$

SUBTOTAL

WASHINGTON STATE SALES TAX (8.60%)

TOTAL COST TO DISTRICT


© 2012 RH2 Engineering, Inc. General Requirements

GENERAL REQUIREMENTS

GENERAL DESCRIPTION

The package-type pressure reducing valve (PRV) stations will be used to form a new pressure zone within the Water District 19 (District) water system. The PRV stations will be installed by the District.

These specifications cover package-type PRV stations that will meet or exceed the following requirements.

ALTERNATIVES

Bids on suitable and equivalent alternatives to these specifications will be considered, provided full descriptions and specifications of the alternatives are submitted.

It is understood that no two manufacturers design and engineer their products exactly alike. Therefore, minor specification variances from one manufacturer to the next are normal.

It is the District’s intention to purchase package-type PRV stations that are designed, engineered, and rated to satisfactorily perform in the application intended.

Minor variances from the technical specifications will be considered, provided that the primary performance requirements are met. The District reserves the right to accept or reject any proposed minor variances that appear to serve its best interest.

ACCEPTANCE

No part or parts defective in construction or deficient in any of the requirements of these specifications will be considered as being accepted consequence of the failure of any employee of Water District 19 to point out said defects prior to acceptance of the equipment by the District. Bidder shall include in the bid price the following guarantees or warranties:

Warranty

a. The successful bidder hereby warrants that for a period of one (1) year from the date the PRV station is put into service, they will, at their own expense and without cost to the District, replace all defective parts and make any repairs that may be required or made necessary by reason of defective design, material or workmanship.

DELIVERY

Delivery of the units shall be phased and coordinated with the District’s schedule for installation. Each unit shall be delivered to the site where the PRV station is to be installed. No more than one unit may be delivered at a time. Water District 19 requires delivery of the first unit within 45 calendar days of the purchase order. The second unit shall be ready for delivery within 15 calendar days of delivery of the first; the third shall be ready within 30 days. Delivery of the units shall not occur prior to District approval and release for delivery. Units which are delivered prior to District approval may be rejected or subject to storage fees which will be assessed to the Bidder and deducted from payment.

Water District 19 Fall 2012 2012 Package-Type Pressure Reducing Valve Station General Requirements



a. Liquidated Damages

All time limits stated in the purchase order are of the essence. Should delivery not be completed on or before the time stipulated, it is mutually agreed by and between the successful bidder and Water District 19 that:

A delay would seriously affect the public and the operation of Water District 19. A reduction in the unit price of Seventy-Five Dollars ($75.00) per calendar day for each and every day for each unit that exceeds the delivery time set forth in the purchase order is the nearest measure of damages for each delay that can be fixed at this time. Therefore, the District and the successful bidder hereby establish said reduction in the unit price of Seventy-Five Dollars ($75.00) per calendar day for each and every day of each unit as liquidated damages, and not as a penalty or forfeiture, for the breach of agreement to complete delivery by the successful bidder on or before the time specified in the purchase order.

b. Should the successful bidder be obstructed or delayed in completing delivery of, by any default, act, or omission of the District, or by strikes, fires, act of God, or by the inability to obtain materials, equipment or labor due to Federal Government restrictions, then the time of completion shall be extended for such periods as may be agreed upon by the District and the successful bidder. Shall there be insufficient time to grant such extensions prior to completion date of contract, the District may, at the time of acceptance of the equipment, waive liquidated damages which may be accrued for failure to complete the work on time, due to any of the above, after hearing evidence as to the reasons for such delay and making a finding as to the cause of same.

F.O.B. POINT

Bid price submitted shall include delivery of the completed units to the project site where the PRV station is to be installed. A vicinity map showing the approximate locations of each of the PRV station sites is included in Appendix B. Contact Armin Wahenik at (206) 463-9007 regarding delivery and staging at the project sites.

METHOD OF AWARD

It is the intention of the District to make the award on a total package basis and bidders are encouraged to submit complete bid proposals. However, if unforeseen circumstances occur, Water District 19 reserves the right to award on an individual item basis, or in any manner that is considered to be in its best interest.

Award of the contract is subject to funding availability.

Water District 19 also reserves the right to make no award at its discretion.

BRAND NAME EQUIPMENT SPECIFIED

Any reference to a brand name product is intended to indicate an acceptable quality level and provide reference as to the type of equipment desired. An equal quality product is acceptable, if approved by the District.

TERMINATION

The District may cancel any purchase order/contract, or any part thereof, by written notice at any time without penalty if the vendor fails to comply with the terms, instructions, specifications,

Water District 19 Fall 2012 2012 Package-Type Pressure Reducing Valve Station General Requirements



delivery completion date, or to perform the work with diligence.

ADDITIONAL INFORMATION

If additional information is desired, please contact Jeff Lakin, Water District 19 General Manager, at (206) 463-9007, or at [email protected].


© 2012 RH2 Engineering, Inc. Specifications and Provisions

SPECIFICATIONS AND PROVISIONS

PACKAGE-TYPE PRESSURE REDUCING VALVE STATION

PART 1 GENERAL

1.1 Scope A. Work covered in this section includes furnishing, start-up and operation training for three (3)

package-type pressure reducing valve (PRV) stations. Installation of the PRV stations shall be performed by the District.

B. All equipment specified in this section shall be furnished by one manufacturer.

1.2 Reference Specifications, Codes, and Standards A. Codes and Standards – Comply with the provisions of the following codes, standards, and

specifications, except as otherwise shown and specified:

AISC – “Specifications for the Design, Fabrication and Erection of Structural Steel for Buildings”, including “Commentary of the AISC Specifications”

AISC – “Specifications for the Design of Cold-Formed Steel Structural Members”

AWS – “Structural Welding Code”

Welding of Aluminum – Conduct in accordance with Section 10 of the “Specifications for the Design and Construction of Structural Supports for Highway Luminaries”, AASHTO, 1971. Welding method shall be either gas tungsten arc or gas metal arc.

B. Shop Assembly – Pre-assemble items in the shop to the greatest extent possible, so as to minimize field assembly of units at the project site. Disassemble units only to the extent necessary for shipping and handling limitations. Clearly mark units for re-assembly and coordinated installation.

C. Commercial Standards:

ANSI B16.5 Pipe Flanges and Flanged Fittings, Steel Nickel Alloy

and other Special Alloys

ANSI/ASME B1.20.1 General Purpose Pipe Threads (Inches)

ASTM A 36 Specification for Structural Steel

NEMA ICS 6 1988 (Rev. 1) Enclosures for Industrial Control and Systems

NFPA 70 Current National Electrical Code

SSPC-SP1 Solvent Cleaning

SSPC-SP2 Hand Tool Cleaning

SSPC-SP3 Power Tool Cleaning

SSPC-SP6 Commercial Blast Cleaning

ASTM A 125 Hot Dipped Galvanizing.

Water District 19 Fall 2012 2012 Package-Type Pressure Reducing Valve Stations Specifications and Provisions



1.3 Manufacturer/Supplier Submittals The information listed below shall be submitted to the District for review and approval prior to fabrication of the PRV stations. The submittal shall, as a minimum, include the following.

1. A CAD shop drawings to describe and show PRV station construction and materials.

2. Manufacturer cutsheets and specifications for all mechanical and electrical components.

3. Structural calculations and drawings for pre-cast concrete vault with access hatch.

4. Proof of experience in the manufacturing of custom package-type hydraulic control valve vault systems, and in the operation and configurations of said systems. Proof of experience shall include manufacturing and support facility locations, names, and phone numbers of operators or persons familiar with system performance, list of installations, and other pertinent information required by the District.

1.4 Information to be Provided at Closeout 1. Operations and maintenance (O & M) manual information in accordance with

manufacturers’ requirements.

1.5 Quality Assurance A. PRV Station Responsibility and Coordination

1. All equipment specified under this section shall be furnished by the PRV station manufacturer who shall be responsible for the adequacy and compatibility of all PRV station components. Any component of the complete PRV station not provided by the manufacturer should be designed, fabricated, and tested by factory-authorized representatives experienced in the design and manufacture of the PRV station equipment specified herein.

2. The PRV station manufacturer and its suppliers shall coordinate the design of the PRV station such that all equipment is compatible and capable of achieving the performance requirements specified herein.

B. Design Requirements

The PRV stations shall be furnished and designed in accordance with the District’s Developer Standards and these Plans and Specifications. An example plan showing the general arrangement of the PRV station is included in Appendix A. The PRV station site and cross section arrangement shown on the drawings is based upon the best information available to the District at the time of design and is not intended to show exact dimensions peculiar to any specific equipment unless otherwise shown or specified. It is anticipated that the connected piping and valves shown, in part or in whole, may have to be modified in order to accommodate the specific PRV station furnished. No additional payment will be made for such modifications. All necessary calculations and drawings for any related design shall be submitted to the District for approval prior to beginning the work.

Fittings, valves, and pipe shall have pressure ratings equal to or greater than 150 pounds per square inch (psi) working pressure and 250 psi test pressure. Pressure reducing valve setpoints and design to be specified by the District. All new piping shall be tested under a hydrostatic pressure equal to the working and test pressure stated above. The District has the right to require more stringent test criteria than that stated here if it is determined in the field




by the District that conditions warrant such measures.

1.6 Start-up Services Installation of the package PRV station, including all water connections to the station, will be performed by the District. When the station is ready for operation, the PRV station manufacturer shall provide the services of a qualified technician, who shall inspect the installation and perform start-up of the PRV station. A minimum of one (1) day of start-up services shall be provided.

1.7 Warranty The Manufacturer shall warrant the package PRV station to be of quality construction, free from defects in material and factory workmanship. The PRV station vault and cover shall be warranted for a period of one (1) year, unless noted otherwise, to be free from defects, resistant to rust, corrosion, or physical failures occurring in normal service, when installed in accordance with the manufacturer’s recommendations.

The interior equipment, valves, piping, and apparatus shall be warranted for a period of one (1) year, excepting only those items normally consumed in service, such as light bulbs, oil, grease, gaskets, or O-rings. The Manufacturer shall be solely responsible for the PRV station and all related components; warranties, and guarantees by the suppliers of various components will not be accepted.

Major components, which fail to perform as specified by the District or prove defective in service during the warranty period, shall be replaced, repaired, or satisfactorily modified by the Manufacturer without cost of parts or labor to the District. After start-up service has been performed, labor to replace accessory items, or other accessible and easily serviced parts, shall be the responsibility of the District. Such components, parts, or repairs determined to have failed because of defects in materials will be replaced or repaired F.O.B. factory or other designated location.




PART 2 PRODUCTS

2.1 General The package type PRV station shall be a pre-engineered and shop assembled station. It shall include all necessary valves, piping, and controls for a complete and operable system as specified and as shown on the supplemental drawings in Appendix A.

The package PRV station shall be delivered to the job site requiring no additional fabrication or similar work, other than placement, and connections to supply and discharge pipes necessary for a fully functional unit.

Factory assembly of the package station shall include but not be limited to: control valves with isolation valves; inlet and outlet pressure gauges with isolation valves; line strainers, when used with blowdown valves installed; air release valves with isolation valves; ¾” hose bib with ball valves and vacuum breaker; aluminum access ladder with safety post; couplings to allow easy valve removal; and all needed appurtenances.

2.2 Experience Requirements The package PRV station shall be the product of a manufacturer who has the financial resources, technical qualifications, experience, organization, and facilities adequate to design and manufacture package PRV stations of the type specified. The Manufacturer shall have a minimum of 15 years experience in manufacturing PRV stations and shall have completed at least 50 prior successful installations, within the area, of package type PRV stations similar in size and scope to the installation herein specified.

Proof of said experience shall be included in the submittal package and shall include manufacturing and support facility locations, names, and phone numbers of operators or persons familiar with system performance, list of installations, and other pertinent information required by the District.

Lack of required experience will be grounds for rejection of a submitted package PRV station. No change in the bid price will be allowed for furnishing an alternate station, which will meet these specifications.

2.3 Station Enclosure A. Vault Chamber

Vault chambers shall be two-piece pre-cast reinforced concrete H-20 vehicular load rated with openings to accommodate all piping and mastic for seam. Chamber interior shall be painted with White CS55 sealant to improve lighting. Chamber exterior shall be sealed with Black CS55 sealant or insulated with polyurethane foam as required to provide a watertight enclosure. Chamber shall have provision for a 36” x 72” double-door access hatch with ladder and safety post.

Vault to be equipped with 12” deep sump with grating and cored outlet for 4” PVC drain.

B. Ladders

Ladders shall meet the requirements set forth in OSHA 1910.27 and WAC (Washington Administrative Code) 296-24-735 through 296-24-81011. The ladder shall also be capable of supporting a concentrated vertical load of 300 pounds applied at mid-span of the rung.




Ladders shall be shop assembled, pre-drilled, and prepared for field attachment of standoff clips, or as otherwise shown. Ladder shall be equipped with stainless steel safety post. Ladders shall be hot dipped galvanized steel or aluminum.

C. Access Hatches

Access hatches shall be of the dimensions and type shown on the project plans.

Access hatches shall have 1/4“ thick aluminum diamond plate door leaf (or leaves), stainless steel spring lift, 3/8” neoprene weather seal, stainless steel hardware, self latching stainless steel slam lock, and recessed padlock hasp.

Door leaf (or leaves) shall be able to withstand a live load of 300 pounds per square foot (lb/ft2) with a maximum deflection of 1/150th of the span. Access doors located at or near vehicle parking or driving areas shall be rated for H-20 (AASHTO) loading.

Channel frame shall have a full anchor flange around the perimeter and shall allow for proper water drainage.

Compression spring operators enclosed in telescopic tubes shall be provided for smooth, easy, and controlled door operation throughout the entire arc of opening and closing. Operation shall not be affected by temperature. The door shall automatically lock in the vertical position by means of a heavy steel hold-open arm with release handle.

Installation shall be in accordance with the Manufacturer’s instructions. Manufacturer shall guarantee against defects in material or workmanship for a period of 5 years.

All hatches shall be LW Products, Bilco, or equal.

2.4 Piping A. Pipe

All pipe to be fabricated from schedule 40 steel to American Water Works Association (AWWA) M11 Steel Pipe design Standards. Finished pipe to be sandblasted, epoxy lined, and coated with NSF 61 approved epoxy to AWWA C210 specifications.

Provide piping, fittings, and appurtenances necessary to make all piping systems complete, tested, and ready for operation as specified herein and as shown on the supplemental drawing. Some fittings that are necessary for proper piping system installation and operation may not have been shown. Provide fittings, pipe, and appurtenances necessary, whether shown or not shown on the supplemental drawing, to complete all piping systems, tested and ready for operation. Note that some pipe supports, thrust blocking, and tie rods are not shown on the Plans. Provide pipe supports, thrust blocking, and tie rods for pipes as required to support and restrain the loads to be encountered.

Provide transition coupling and size inlet and outlet piping to match existing distribution system piping.

B. Fittings

Fabricated steel pipe shall be constructed as shown in the plans and steel pieces shall be constructed as dimensioned to tolerances of +/- 3/32”. Welds shall be constructed in accordance with ASME Welding Code. Manufacturer shall supply written certification that




flanged ends welded to the steel pipe and welded pieces shall be capable of the hydrostatic testing pressure specified. Manufacturer shall be responsible for compliance to this tolerance and correct any dimensions or welding that does not meet this specification at their expense.

Steel pipe and fittings shall be constructed in accordance with AWWA C200. Steel pipe and fittings shall be fabricated from ASTM A53 Grade E or S. Design stress shall be half (1/2) the yield stress of the steel. Where grooved joints are used, pipe thickness shall be modified accordingly to maintain the hydrostatic test pressure compliance. Internal pressure of the pipe shall be that stated under hydrostatic testing pressure schedule in this division above. Epoxy coat interior and exterior in accordance with AWWA C210. Shop drawings shall clearly indicate wall thickness and diameter. Steel flanges shall be rated for the specified working and hydrostatic testing pressures. Shop drawings shall be submitted to the Engineer for review and approval prior to material order.

C. Pipe Supports

Properly support, suspend, or anchor exposed pipe, fittings, valves, and appurtenances to prevent sagging, overstressing, or movement of piping; and to prevent thrusts or loads on or against connected pumps, blowers, or other equipment. Installation of supports shall be in accordance with ANSI/ASME B31.1 and the manufacturer’s instructions.

Pipe supports shall be placed to meet the following maximum spacing, unless otherwise noted: maximum vertical support spacing of 5 feet; maximum horizontal support spacing of 10 feet. Support shall be provided at horizontal bends, base of risers (vertical bends), valves and appurtenances. Support spacing shall meet local plumbing code where applicable. Support spacing may be increased from that noted above provided adequate calculations are provided supporting the change.

2.5 Valves A. Isolation Valves

All isolation valves for water lines 2-inches and larger shall be of the resilient, wedge-type, non-rising stem and shall meet or exceed the performance requirements of AWWA C509 or AWWA C515-Reduced-Wall, Resilient-Seated Gate Valves for Water Supply Service and be suitable for installation with the type and class of pipe being installed. The wedge shall be fully encapsulated with vulcanized SBR rubber. Ends to be as specified. Valve opening direction shall be counter-clockwise. Install valves and fittings in accordance with the Manufacturer's recommendation. Verify alignment and adjustments after installation.

B. Hydraulic Control Valves

Hydraulic control valves noted on the supplemental drawing or in other parts of the specifications shall meet the requirements herein. Valves shall be designed for the intended service. Installation of valves shall be in strict accordance with the Manufacturer's instructions.

Valve suppliers shall review the design and certify that the valve provided in the submittal will operate as described and within the conditions specified. Any discrepancies from the design and the specified valves shall be brought to the District’s attention during the




submittal process. Valves that do not operate as intended shall be replaced or modified so that they operate within the design parameters at the Manufacturer’s expense.

Valves shall be diaphragm-actuated, single-seat, hydraulically-operated valves and shall have a cover chamber sealed from the body by a flexible, synthetic rubber diaphragm. Control of valve shall be from direct-acting, adjustable spring-loaded diaphragm valve(s) as appropriate for the valve function. Pilot controls shall be selected appropriately for the system operational pressure range. Double-chamber valves shall be used where independent operating pressure or absolute speed control is required. Globe or angle style valves with flanged or threaded ends shall be as shown on the plans. Valves where differential pressure is expected to exceed 100 psi shall be of the anti-cavitation type.

All hydraulic control valves shall be provided with an epoxy coating on the interior flow path and exterior body. Interior epoxy shall be certified for potable water use. Provide brass nameplates on all valves indicating valve size, inlet side (or flow direction), valve model, and control pilot adjustment ranges.

Valves shall be provided with all pilots, solenoids, and controls preassembled to operate the valve in its intended function. Solenoids shall be powered by 120 VAC current. Provide each valve with stainless steel trim. Diaphragm shaft shall be stainless steel

A strainer shall be provided on all valve pilots to prevent clogging by debris in the water. All valves shall be rated for the pressures specified herein.

1. Pressure Reducing Valves

The pressure reducing valve shall be set to open at any pressure below its preset setpoint and to close at any pressure above an adjustable deadband, to maintain downstream pressure within 2.5 psi of the pressure setpoint. Downstream pressure control shall not be based on changing upstream pressures. Valve shall be provided with a valve position indicator assembly.

Pressure Reducing Valves shall be Cla-Val model 90G-01 YBSKC with model X101 valve position indicator assembly, no equals.




PART 3 EXECUTION

3.1 Delivery and Storage Upon delivery of the equipment to the jobsite, the Manufacturer shall take inventory of the shipment and immediately report to the equipment manufacturer any discrepancies between the equipment manufacturer’s packing lists and shipping documents.

The Manufacturer shall be responsible for off-loading and protection of all equipment against damage and during on-site storage and installation. Damaged equipment and materials will be replaced by the Manufacturer at the Manufacturer’s expense.

3.2 Field Quality Control After the package PRV station has been installed in the field, the PRV station manufacturer shall furnish competent personnel to start up and test the complete package system. An operational test, simulating service conditions, shall be given to check for proper operation and leaks in all piping, valves and seals, and all auxiliary equipment. The Manufacturer shall furnish all testing and other equipment required to complete the performance tests. All irregularities shall be corrected to the satisfaction of the District.

APPENDIX

APPENDIX A

Pressure Reducing Valve (PRV) Station Drawings

APPENDIX B Vicinity Map

sw covE RD

8W CEME,TERY

\v,

I\äo¡U,

s

2012 package-type pressure reducing valve stationswater19.com/2012 prv stations bid package...

Documents