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This safety relief valve can be used for relieving pressures and maintaining upstream line pressures to a specific set pressure. Pressure relief valve can also be used for bypassing fluids or gases. Only strained or filtered liquids are recommended. When liquids contain debris or other solid matter which might cause the valve seat not to close properly with this type of pressure relief valve, a low-pressure strainer with a fine wire mesh should be installed before the inlet of the valve. Simplex basket strainers or low-pressure filters can be purchased from Stra-Val. This is a diaphragm low-pressure valve which is used where accurate set pressures must be maintained. The large diaphragm area compared to a piston pressure relief valve produces much more accurate pressure control with very low hysteresis between opening and closing pressures.

Features & Benefits

• Body: Available in a wide variety of special alloys and high-performance engineered plastics (see above).
• Elastomeric diaphragm: Choice of different elastomers includes reinforced Teflon, Viton, Buna, and EPDM (most materials always in stock).
• Spring chamber: Standard construction is carbon steel. Alternates: stainless steel, aluminum, and PVC.
• Right-angle porting: Side inlet, bottom outlet is standard with this diaphragm valve manufacturer’s model. Take a look at our in-line ported diaphragm valve which is usually the more preferred piping arrangement that we generally stock, so deliveries are shorter, and are also usually priced less. Special threads or ANSI and sanitary flanges (tri-clamp flanges) are also available.