Description
RESILIENT SEATED
BUTTERFLY VALVES
Features
Body:
- High strength ductile iron lugs
- Full rating as standard with one flange removed (lug style only)
- Full rating dead end service (lug style only)
Seat:
- Phenolic backed elastomers
- Full vacuum service capabilities
- Primary & secondary shaft seals (upper & lower)
- Seats cannot be lipped in on installation
- Non-collapsible
- Flange gaskets are not required
- Superior shaft support at elastomer/disc interface
- Discs are machined to suit the seat flat to provide maximum sealing surfaces with reduced torque & wear
- Eliminates media exposure to shaft journal
Disc:
- Machined & polished disc edge
- Precision disc flats
- Wide seating surface ensure positive bubble tight seal
- Uniform contact around entire circumference minimizing wear, reducing torque & increasing cycle life
Bushings:
- 3 bushings, non-metallic, low co-efficient of friction, totally isolate the shaft from the body journal
- Positive shaft alignment
- Prevents shaft seizure in the body journals
- Eliminates side loading on actuators
- Reduced bushing torques
Shaft:
- Through shaft design
- Shaft diameters to AWWA CL-75B in sizes 3″ to 12″
- Blow out proof shaft, reduces disc deflection
Interchangeability:
- Interchangeability with all butterfly valves in conformance to industry standards
RATINGS
PMO (maximum operating pressure) up to 12″:
200 psi @ 150°F
180 psi @ 225°F
PMO (maximum operating pressure) 14″ to 24″:
150 psi @ 150°F
140 psi @ 225°F
PMO (maximum operating pressure) 30″ to 48″:
150 psi @ 150°F
100 psi @ 225°F
TMO (maximum operating temperature)
Buna-N Seat:-10°F to 180°F
EPDM Seat: -10°F to 225°F
Viton Seat: -10°F to 275°F
Teflon Lined EPDM Seat: -10°F to 225°F
