Stainless Steel Double Check Valve Assemblies with Tri-Link Check Valves for High Flow Fire Systems
Series M200, M200N Double Check Valve Assemblies are specifically designed for high flow fire systems to prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating tri-link check valves, two shutoff valves, and four test cocks. It features a stainless steel housing and sleeve and is 70% lighter than traditional designs. The Series M200, M200N features the certified lowest pressure loss and is designed for non-health hazard applications. It may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum Working Pressure: 175psi (12.06 bar).
2 1/2 to 10 in. (65 to 250mm)
The Double Check Valve Assemblies shall consist of two independent Tri-Link Check modules within a single housing, sleeve access port, four test cocks and two drip tight shutoff valves. Tri-Link Checks shall be removable and serviceable, without the use of special tools. The housing shall be constructed of 304 (Schedule 40) stainless steel pipe with groove end connections. Tri-Link Checks shall have reversible elastomer discs and in operation shall produce drip tight closure against the reverse flow of liquid caused by backpressure or backsiphonage. Assembly shall be a Maxim M200, M200N as manufactured by the Ames Company.