POM RVDT Back Pressure Control Valve
POM RVDT Back Pressure Control Valve
Series RVDT/RVDTM is a universal automatic backpressure control valve for pressure relief, pump backpressure, pump bypass, anti-siphon, and backpressure regulator applications. Thermoplastic or Metal Valves designed for smooth, sensitive operation and the ultimate in corrosion resistance or ultrapure liquid handling with no wetted elastomers. Upstream pressure settings to 125 PSI on most models.
Available in Geon PVC and Corzan CPVC body materials in 1/4″- 3″ sizes; Natural Polypropylene and Kynar PVDF body materials in 1/4″ – 2″ sizes; PTFE body material in 1/4″ – 1″ sizes; Stainless Steel body in 1/2″ – 1″. A complete range of connection types available.
• Diaphragm material is PTFE for all sizes and body materials, and is excellent for use with highly aggressive liquids...provides the ultimate in contamination-free sealing.
• Large diaphragm area delivers more sensitivity and less pressure drop under flow conditions.
• Non-leaching feature of fluoropolymer diaphragm makes it ideal for use with ultra-pure water and concentrated etchants, as in the semiconductor industry.
• Non-wetted u-cup seal provides a second isolation of the control spring; design includes patented Fail-Dry vent, a safety feature that provides visual warning of seal malfunction. This permits the valve to continue operation until a scheduled maintenance can be planned thereby avoiding a costly shutdown. Fail-Dry connection is 1/8" FNPT; 1/4" FNPT 3" AND 4" sizes.
