850-20 Tubular Diaphragm Seawater Relief Valve

The Cla-Val Model 850-20 Seawater Relief Valve is a pressure-operated, in-line axial valve. A tube diaphragm actuates the valve, which is comprised of three major components: 1) Tube 2) Barrier and 3) Body. There is only one moving part in the valve - the tube diaphragm. There are no shafts, packing, stem guides or springs.

• Low Head Loss
• One Spring for all Pressure Ranges between 30 and 200 PSIG
• Cast Steel Construction
• Pressure Excursions Do Not Exceed 3% of Set Pressure
• Fusion Coated Epoxy Inside and Out
• Anti-Cavitation Design
• Nickel Aluminum Bronze Construction Option (Alloy C95800)
• Duplex Stainless Steel Construction Option (Alloy 2205)
• Low Maintenance
• Simple and Reliable Operation