: Wafer Butterfly Valves
: Lug Butterfly Valves
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The STW/STL is a resilient seated 125/150, ductile iron wafer style (STW) or lug style (STL) butterfly valve available with either BUNA-N or EPDM seats and a choice of disc materials (316SS, nickle plated ductile iron, or bronze). It can be equipped with a manual handle or with pneumatic or electric actuators. A full range of accessory items are available including limit switches, solenoid valves, positioners and manual override devices.
- Silicone Free
- Economy & high performance
- One-piece body construction and self-centering disc.
- Seat facing acts as flange gasket.
- 3 shaft bushings support actuation.
- Shaft sealing against external leakage
- Meets MSS SP-67 and API-609 specs.
- Complete line of accessories
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- Seat - BUNA-N or EPDM
- Disc - 316 SS - standard
(nickel plated D.I. or bronze available)
- Body - Epoxy Coated Ductile Iron
- 2" to 12" Wafer Flange
- 2" to 24 " Lugged Flange
- Electric
- Pneumatic (spring return)
- Pneumatic (double acting)
- Manual Handle Lever
- Manual Geared Hand Wheel
- Manual Handle with Limit Switch
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Temperature Range:
- -4 to 194 °F (BUNA-N)
- -22 to 230 °F (EPDM)
Max. Pressure:
- 225 PSI (2" to 12")
- 160 PSI (14" to 24")
Pressure Testing:
- Body Hydro: 343 PSI (24 Bar)
- Seat Hydro: 243 PSI (17.6 bar)
Dead End Service: (Lug type only)
Downstream Flange is recommended
- 150 PSI (2" to 12")
- 100 PSI (14" to 24")
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- Water and waste effluent treatment plants
- Paper, textiles and sugar industry
- Construction industry, and drilling production
- Heating, air conditioning, and cooling water circulation
- Pneumatic conveyors, and vacuum applications
- Compressed air, gas and desulphurization plants
- Brewing, distilling, and chemical process industry
- Transportation and dry bulk handling
- Power industry
- Meets MSS SP-67 and API-609 Certifications
- ISO 9001 by LRQA. certificate No.K981064
- Canada registration No CRN 0C0569.9C valves
- CE/PED approval... by LLOYDS certification No RPS0160308/01
- Products approval...South Africa SABS, No.7222/145532/VH136
Wafer Butterfly Valves
install between flanges and bolts span the body.
Lug Butterfly Valves
install between flanges and bolts are threaded into tapped holes from
each side of mounting flange. |
