: Wafer Style
: Lug Style
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The STW/STL is a resilient seated 125/150, ductile iron, high performance 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.
- 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
- 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")
- 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
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- 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 valves
install between flanges and bolts span the body.
Lug valves
install between flanges and bolts are threaded into tapped holes from
each side of mounting flange. |
