Valves & Actuation

 Note - Pressure ratings shown above are the maximum allowable inlet pressure for the solenoid followed by the maximum allowable back pressure @ 73° F
** This is an optional version of the 1” valve where the design has been modified to allow higher inlet pressures at the sacrifice of lower Cv.

Series RVDT In-Line Pressure Relief Valves feature a wetted flat PTFE diaphragm to resist both chemical attack and salt crystallization problems. A large, active diaphragm area provides for smooth, chatter-free operation. Relief setting is infinitely adjustable from 5 PSI to 100 PSI. This design functions as a relief valve, by-pass valve, back-pressure valve and anti-siphon valve. The Relief Function protects systems and equipment from over-pressure and pressure surges. The By-Pass Function prevents pumps from “dead-heading”. The Back- Pressure Function maintains necessary reverse pressure in closed-loop systems. The Anti- Siphon Function prevents unwanted chemical siphoning, if city water pressure drops to zero, and changes in elevation create negative pressure. Series RVDT relief valves are constructed of Type 1, Grade 1 PVC, CPVC, Polypropylene, PTFE or PVDF Kynar® body materials. The wetted diaphragm is PTFE, energized by a non-wetted Viton® diaphragm. Springs (not in wetted area) are zinc-plated steel, fasteners are stainless steel and the adjusting screw is polyethylene.