Butterf ly ValvesHigh Performance
A Long Experience in Energy Equipment and one Goal:
The Cus tomer ’s sa t i s fac t ion .
®
Class ANSI 150 LBS = ISO PN20Class ANSI 300 LBS = ISO PN50
Design
2
Extended valve neck
Fire safe
Modular design
Compact
Anti blowout stem
Easy maintenance
Streanlined disc
®
VALVITALIA reserves the right to change design, specification and materials without notice
3
Double offset disc
Double external sealing
Dynamic bi-directional sealing (with anti bowout soft seal)
Shaft upstreamLine pressure compresses seal energizer wich forces fhe seal ring and increases seals effectiveness.
Shaft downstreamThe force produced causes the soft seal ring to move and increases the primary sealing force.
VALVITALIA reserves the right to change design, specification and materials without notice
Features
4
Design
Two types: wafer and lug
The same valve can be fitted with different sealing assemblies: soft seal and soft seal + metal (FIRELOCK fire safe option).
No hole, screw or nut located on the in-line sealing surface.
The valve neck is long enough to allow the use of DYNALOK on insulated pipes.
Mechanical travel stop in closed position built in the body.
Streamlined disc
Gives maximum flow characteristics with minimum pressure drop.
External sealings
External tightnesses achieved by O’ring with graphite back-up.
Easy maintenance
Gland packing can be retrofitted whithout dismantling the operating device.
Seat seal can be replaced without dismantling the disc.
Double offset disc
This concept allows the disc to come freely away from the seat at the opening, preventing seat scuffing and cold flow.
The rotation being whithout contact, friction torque is cancelled.
At closing, the came effect gives the necessary force to tighten the seal.
VALVITALIA reserves the right to change design, specification and materials without notice
®
5
Applicable standardsDesign
Product
Face-to-face
Body contact face
Testing leaktightness
Fire safe according to:
Marking
Non-destructive examination:
Visual inspection
Positive materialsidentification (PMI)
On request, according to:
- Radiography procedure
- Magnetic particle examination
- Dye penetrant examination
ASME B 16.34
API 609 Category B
API 609 table 2 (3”-24”)
ISO 5752 serie 20 (30”-36”)
ASME B 16.5
API 6 D
API 598
API 607
MSS SP-25
MSS SP-55
ASME B 16.34 par. 8.3
special class valve
- appendix B
- appendix C
- appendix D
Fire safeThe fire safeconception meets the following riquirements:
- Operator protection
- Installation safety
- Preventing fire extension
- Keeping valve under operation for fluid transfer
The applicable standard is API 607
Therefore the design of DYNALOK valves includes the following specific features in the FIRELOK version:
- Graphite back-up on all external seals
- Steel gasket ensuring metal-to-metal contact on the disc after destruction of the soft seal.
VALVITALIA reserves the right to change design, specification and materials without notice
Construction
6
Materials to NACE MR 01.75 standard on request.
Others material on request ( Duplex, 6 Mo . . . )
VALVITALIA reserves the right to change design, specification and materials without notice
®
Dimensions
8
Connection ISO PN 40 on request
VALVITALIA reserves the right to change design, specification and materials without notice
®
Pressure/Temperature
10
Pressure / Temperature service diagrams for valvesfitted with glass filled PTFE seals.
VALVITALIA reserves the right to change design, specification and materials without notice
®
11
Flow coefficient
VALVITALIA reserves the right to change design, specification and materials without notice
Operating Torques
Operation
12VALVITALIA reserves the right to change design, specification and materials without notice
®
13
Typical applications
VALVITALIA reserves the right to change design, specification and materials without notice
Abv Rock / Moda
Air Products
Amoco
Ashland Oil
Bethlehem Steel
Bringe Oils
Canadian Superior Oil
Chevron
Chinese Petroleum
Cryogenic Cons.
E. I. Dupont
FSC Paper
General Electric
Gulf Oil
Henkel
Honeywell Inc.
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Main References
Inland Steel
ITT Grinnell Canada
John Brown Engineers
Mc Dermott
Mobil North Sea
Nato Airport
Pacific Soap
Perenco Oil
Petrovietnam
S. I. R. (Soc. Ivoirienne Raffinage)
Shell UK
Simpson Paper
Sollac
Spencer Kellogg
Stauffer Chemical
Sulzeer D. P.
VALVITALIA reserves the right to change design, specification and materials without notice
®
15
Tusi Nuclear
U. S. Navy
UCC / Linde
US Steel
Watson Biogas
Weiron Steel
Western Electric
Zaventem Airport
VALVITALIA reserves the right to change design, specification and materials without notice
A Long Experience in Energy Equipment and one Goal:
The Cus tomer ’s sa t i s fac t ion .
VALVITALIA S.p.A.Via Tortona, 69 - 27055 Rivanazzano (PV) Italy
Phone: +39.0383.945911 - Fax: +39.0383.945962E-mail: [email protected]
Web site: www.valvitalia.com
Rivanazzano (PV) Plant
04.1
0 - 1
000
- DYL
K-BU
T.04