Series BRV, Combination Ball Valve and Relief Valve is an easy to install two-in-one device. Designed to be used as water heater shutoff valves to provide both a means to shut off the water supply to the water heater and to provide protection against excess water pressure caused by thermal expansion... (read more)

All of our relief valves are custom designed and manufactured to our customers' individual and unique application requirements. We try to use existing valve designs whenever possible to help keep costs to a minimum. As a custom designer, we are able to make minor adjustments in the original design to meet your requirements. Check out our website and contact us for additional information. (read more)

Series 27 combines pressure and vacuum relief, designed for coffee urns and similar kitchen equipment. (read more)

The UFDV diaphragm valve is a pressure control device. The selected pressure is adjustable, and applied via a spring-loaded diaphragm. The valves are available in a variety of materials and with a locking set-screw for OEM use, or an easily-adjusted control knob. An optional vacuum or pressure gauge is available. (read more)

SC Hydraulic Engineering direct acting relief valves are available in 1/4" NPT and 9/16-18 60° cone high pressure fitting for relieving pressures from 100 to 60,000 psi. The stainless steel construction makes these valves suitable for hydraulic fluids, water and gas applications. Standard seal material is Buna-N (-N). Substitute a "-V" for Viton® or "-E" for EPR after the part number for the... (read more)

Performance Specifications:

Operating Fluid: Air, Nitrogen

Operating Temperature: 550° F

Cracking Pressure: 70± 8 PSIG

Flow Rate: 5.5 SCFM at 100 PSIG maximum

Leakage: 40 Bubbles/minute maximum at 300 PSIG applied in checked direction

Notes: Valve utilizes high temperature Polymer Poppet and Inconel spring. (read more)

The Sanitary Cartridge Valve is a 316 stainless steel check valve for use in new or existing sanitary systems. The SCV design seals on the ID of sanitary ferrules with replaceable food grade seals. (read more)

Weather Caps for Pressure Relief Valves

The Yellow Jacket Weather cap, from Scientific Linings & Coatings, Inc., is a relief valve accessory that makes 100% discharge side protection a practical reality. It's all about safety, compliance, the economy, and success!

Use of WEATHERCAP™ protection brings your pressure system into compliance while... (read more)

The Lee Company's relief valves come in a wide range of styles. Each style has been developed to satisfy specific relief needs commonly found in hydraulic systems. These may vary widely from the intermittently exercised safety "pop-off" application, to the continuously running pressurizing valve or the special requirements relieving a few droplets of oil from a trapped volume being heated. (read more)

The Sanitary Insert Valve is an all PTFE check valve with a 316 stainless steel spring (which can be PTFE encapsulated) for use in new or existing sanitary systems. The valve is designed to fit into grooved end clamp type fittings and replaces the gasket normally used with these fittings. (read more)