automatic control valve training
TRANSCRIPT
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Automatic Control
Valve Trainingpresented by: Joe Passalacqua – HyDEC
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Course Objectives
Basic hydraulics reminder
Understanding…
On-OFF Valves Solenoid Valves
Altitude valves
Pump control valves
Modulating valves Pressure reducing valves
Pressure relief valves
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Basic Hydraulics
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Pressure X
Area
= Force
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Line Pressure to Open
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Line Pressure to Close
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Just a reminder…
Water on the cover to close the
main valve
Water off the cover to open the
main valve
Knowing this makes
troubleshooting easier…
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Cla-Val Automatic Control Valves
Consist of…
Main Valve
Pilot Control
System
CLA-VAL
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“From the Smallest”
Color Photo
Close-Up
From the smallest: 3/8-inch
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To the largest: 48 inch
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40-inch Valves
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Globe and Angle Pattern
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Name Plate Locations
2-1/2” and larger
flanged valves
2” and smaller flanged valves and
all threaded and grooved valves
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Cla-Val Nameplate
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Flow Direction
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Clayton Valley Level Control
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Two Basic Types of Level Control
Float
Floatless
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Floatless or Altitude Valve - 210 Series
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Installation: Above Ground Tank,
Mission Viejo
Photo
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Installation: Corona, CA
Photo
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Basic Operation of 210 Series PVS
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CDS6A Liquid Level Control
Three-way pilot
design
Spring adjustable
level setting
Reservoir level
sensed as pressure
head changes
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CDS-6 is easy to adjust
Photo
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CDS-6 has 5 adjustment ranges with 1 spring
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Cla-Val CV Control
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Free Flow Restricted Flow
Cla-Val CV Control
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Clayton Valley
Pump Control Valves
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Pump Control Valves
Model 60-11
Model 61-02
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100-03 Booster Pump Control Valve
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100-03 Powercheck
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60-11 Booster Pump
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Typical Deep Well Pump Station
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100-02 Powertrol Valve
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100-02 Powertrol
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Clayton Valley
Pressure Reducing
Valves
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Pressure Reducing Valves
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Pressure Reducing Valves
• Function
• Pressure reducing valves shall maintain a
constant downstream pressure regardless of
changing flow rate and/or inlet pressure
• Opens on a drop in downstream pressure
• Closes on a rise in downstream pressure
• Modulates to meet system demand
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Operation of 90 Series PVS
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CRD Reducing Pilot Control
Normally open
Closes on pressure rise
Senses outlet pressure
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Pressure Reducing Valve.swf
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Sizing Factors and Cavitation
Flow rate capacity
At allowable pressure drop
At maximum velocity
Pressure rating
Of valve and pilot system
Of valve flange
Cavitation damage potential
Materials compatibility
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Disc Close to Seat (Valve Cutaway)
Photo
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100-01KO Anti-Cavitation Components
Disc Guide Seat
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100-01KO Anti-Cavitation Valve
Radial slot design
Disc guide slots
Seat slots
Cast parts
316 stainless steel
Monel available for seawater service
Patented
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Retrofit Kit
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Clayton Valley
Pressure Relief Valves
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Pressure Relief Valves
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One Valve…Three Functions
Pressure Relief
Pressure Sustaining
Back Pressure
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CRL Relief Pilot Control
Normally Closed
Opens on pressure rise
Senses inlet pressure
remotely
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Basic Operation of 50 Series PVS
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X42N-2 Strainer Needle Valve
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Clayton Valley
Combination valves
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Combination Valves
Only one function can work at a time, no
matter how many functions are on each valve
Hydraulic and/or electric
Pressure reducing/sustaining
Altitude with solenoid shut-off
Pressure reducing both ways
Pump control with flow control
There are thousands of
combination applications
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Combination Valves
Model 92-01 Pressure
Reducing Pressure
Sustaining Control Valve
Model 93-01 Pressure
Reducing and Solenoid
Shut-Off Valve
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Model 93-01 Pressure Reducing and
Solenoid Shut-Off Valve
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Basic Operation of 93-01 PVS
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92-01 Pressure Reducing/
Pressure Sustaining Control Valve
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CRL & CRD Comparison
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Basic Operation of 92-01 PVS
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92-01 Pressure Reducing/Sustaining
Valve
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Many More Features Can Be Added
• Remote Shut-Off
• Solenoid Control
• Return Flow
• Check Feature
• Rate of Flow Control
• Static Remote Sensing
• Electronic Controls
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Remote Control Valves
Model 131-01
Model 350-02
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133-01 Series Metering Valves
Monitors and
controls flow
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Start-Up Procedures
1. All isolation valves are closed
2. Slightly open inlet isolation valve
3. Install X101 and gauges
4. Bleed air at all high points (pilot control and main valve)
5. Fully open inlet isolation valve
6. Adjust pilot controls to closed position and open all shut-off cocks
7. Slowly open downstream isolation valve
8. Set pilot controls after flow begins
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Automatic Control Valves…
Can be the heart of a water system
Control surge
Control pressure
Control flow
Control level
Are subject to failure
Are a piece of mechanical equipment that
needs to be maintained
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Misapplication?
Misinstallation – no water or
electricity - sense lines connected?
Inadequate maintenance
Why control valves don’t work…
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Preventive Maintenance is a Program of :
Scheduling maintenance –
every year / 5 year rebuild
Keeping accurate service records!
Regular cleaning and inspection –
usually once a year.
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Complete Valve Rebuilds
Manufacturers recommend a complete rebuild
every five years, depending on water quality,
(more often in valves which operate in a harsh environment)
A complete rebuild consists of:
Cleaning the main valve
Cleaning all pilots
Replacing all rubber parts, both in pilots
and main valve
Metal parts are replaced only as needed
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Set-up a system to keep track of what kind of
service was done and when it was performed
Note the pressure settings
Record which parts were replaced
Note what types of problems the station or
valves may have had
Suggest which parts may be required at the
next maintenance
The Importance of Keeping Records
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Around-the-Clock Technical Support
Service Training Manual
www.cla-val.com
HyDEC Corp. 1-800-874-6658
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Experience the ripple effect of
superior products and
great serviceCla-Val
Thank you for your time and
attention!