Description
The 601 Series Wafer Check Valve is a single-disc, non-return valve engineered for thermoplastic piping systems where installation space is limited and reliable backflow prevention is essential. Built from PVC Type I with EPDM O-ring seals and a 316 stainless steel spring, this valve installs between standard flanges without spacers and performs in both horizontal and vertical piping orientations.
The 601 Series covers 2-1/2" through 12", split across two product lines: the 601N for sizes 2-1/2" through 8", and the 601NP for sizes 10" and 12". Both share the same core materials and wafer-style body conforming to ASME/ANSI B16.1 Class 150 face-to-face dimensions. Materials are NSF-61 certified for potable water applications.
Features:
- Compact wafer body fits tight installations without a spacer between PVC Schedule 80 flanges
- Single-disc design rated for horizontal and vertical piping
- 316 stainless steel spring dampens disc movement to prevent water hammer and extend service life - spring is removable if desired
- Full vacuum rating of 29.9 Hg (inches mercury)
- Serviceable design with repair parts and replacement O-rings available
- NSF-61 certified materials suitable for potable water use
- Recommended for industrial process piping, commercial pools and water parks, aquaculture, aquarium and zoo support systems, marine and saltwater applications, and water and wastewater treatment
Specifications:
601N - Sizes 2-1/2 in. through 8 in.
- Working pressure: 150 psi non-shock water at 73°F
- Cracking pressure: 0.5 psi
- O-ring seal: EPDM
- PVC locating ears included for proper flange alignment
- Pressure ratings should be derated for elevated process temperatures
601NP - Sizes 10 in. and 12 in.
- Working pressure: 87 psi non-shock water at 73°F
- Cracking pressure: 0.30 psi
- O-ring seal: EPDM
- Gaskets included for installation between Class 150 flanges
- Pressure ratings should be derated for elevated process temperatures
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