The Series RVDM is an in-line rolling diaphragm pressure relief valve designed for corrosive and high-purity liquid applications, eliminating crystallization through its primary rolling diaphragm and secondary flat diaphragm with Fail-Dry® safety vent. It is infinitely adjustable from 5 psi to 100 psi, with a maximum inlet pressure of 150 psi, and is available in 1/2", 3/4", and 1" NPT sizes. No wetted metals are used; bodies and seals are constructed from PVC, CPVC, glass-filled polypropylene, or PVDF with EPDM or FKM (Viton®) seals. The adjusting bolt, lock nut, and body are thermoplastic, while the control spring and external fasteners are non-wetted steel. The valve is not recommended for vacuum or backpressure conditions.
Series RVDM features a primary rolling diaphragm and a secondary flat diaphragm which incorporates the Plast-O-Matic patented Fail-Dry design for added protection. The rolling diaphragm provides greater sensitivity than non-diaphragm style relief valves, and is ideal for all applications without vacuum on the outlet. 1/2″ – 1″ sizes in most popular thermoplastic materials and connections; 5 – 100 PSI set range (5 – 125 PSI on 1/2″ only).
| Plast-O-Matic Valves, Inc. | |
|---|---|
| Product Category | Industrial Valves |
| Product Number | RVDM |
| Product Name | In-Line Rolling Diaphragm Relief Valve |
| Valve Type | Relief |
| Primary Material | PVC; CPVC (optional feature); PP (optional feature); PVDF (optional feature) |
| Media | Corrosive, High Purity Liquids |
| Valve Size | 0.50 to 1.00 inch (12.70 to 25.40 mm) |
