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RD-Series Check Valve
Brand: Henry Pratt CompanyThe Pratt® RD-Series Check Valve has only one moving part: a resilient disc reinforced with steel.
This simple, innovative valve provides dependable, maintenance free performance, and quiet operation with its inherent non-slam construction.
The large, unobstructed flow path makes the valve an excellent choice for wastewater as well as water applications.
The design has undergone a rigorous 1,000,000 continuous cycle test with no signs of wear or distortion to the valve disc or seat.
Features- All sizes have a 250 psi rating.
- features a full flow area providing 100% unrestricted flow and low head loss. Flanges are in full compliance with ANSI B16.1, Class 125.
- Disc position indicator
- External backflow device - to manually open disc
- Proximity limit switch - to transmit an electrical signal to indicate when disc is open or closed
- EPDM disc option
- Stainless steel cover bolts
- Complies with AWWA C508 Standards
- NSF/ANSI 61/372 Certified
Specifications
Brand
Sizes
- 2” through 24” flanged ends
- 3” through 16” mechanical joint ends
Body
- Ductile Iron in ASTM A-536 Grade 65-45-12
Bonnet
- Ductile Iron domed access bonnet.
Disc
- The only moving part.
- Buna-N encapsulated steel disc with nylon reinforcement in the flex area.
- The molded elastomer with integral O-Ring ensures a bubble-tight shut off, without backflow.
Seat
- Constructed on a 45° angle.
Flow
- Equal to or greater than the equivalent pipe size.
Coatings
- Fusion bonded epoxy.
- Suitable for use in potable and waste water services.