Keystone Dubex – RMI AWWA Butterfly Valves
Double-flanged, triple eccentric, resilient seated valve designed for services in the water industry.
雙法蘭，三偏心，彈性座閥在水行業(yè)服務設計的。
Keystone Dubex – RMI AWWA Butterfly Valves
- Description
- Specifications
- Documentation
Double-flanged, triple eccentric, resilient seated valve designed for services in the water industry.
Features & Benefits:
- Triple eccentric design:
- 1st offset: center line of the resilient disc seal is offset from the center line of the shafts
- 2nd offset: the center line of the shaft is offset from the valve body
- 3rd offset: the Keystone Dubex – RMI body seat landing surface has the shape of an oblique cone with the ground surface perpendicular to one side of the cone
- Triple eccentric design, along with a resilient disc seal, ensures bi-directional drop-tight shutoff per the AWWA C504 specifications.
- In-line replaceable resilient disc seal.
- Fully rated dead end service.
- Standard body seating surface is ductile iron with Epoxy lining (Epasfill). Alternative seating surfaces such as stainless steel are available on request.
- Dry shaft option available.
- Axial bottom shaft bearing carrying the disc weight when installed with shaft in vertical position and ensuring accurate centering of the disc assembly.
- Reversed V-shaped packing for vacuum applications.
- Open brackets for packing access and adjustments are available on request.
- Self-lubricating bearings are PTFE lined. Alternative bushing materials are available on request.
- Horizontal or vertical shaft mounting.
- Low head loss, suitable for throttling services.
- Face-to-face:
- According AWWA C504-06 short
- Above 72": manufacturer standard
- Alternative face-to-face dimensions on request
- AWWA POD (Proof Of Design) certificates for valves and gear units available.
- Clockwise closing, optional counter clockwise closing.
- Suitable for manual gear, electric, hydraulic and pneumatic actuation.
- Self-adjusting V-shaped shaft packing available.
- Performance testing in compliance with AWWA C504 requirements.
- Valves are cycle tested as per AWWA C504 requirements.
Applications:
Drinking water pump station and transportation/distribution
Waste water effluent and treatment plants
Reservoirs, circulating water systems
Desalination plants
Cooling water systems (power plants, general industry)
Certification:
AWWA, NSF 61 on applied materials WRC/NSF
Technical Data
Sizes: 6" to 160"
Pressure: 6" to 48" – 350 psi
up to 86" – 250 psi
up to 120" – 150 psi
above 120" – contact sales
Temperature: 0 to 220°F
Flange accommodation: as per AWWA C504 flat face (raised face optional)
Drilling:
6" to 72" – ASME B16.1
above 72" – AWWA C207, class D
Other drillings on request
