Circle Seal L500 Series low-pressure relief valves from Circor Instrumentation have been developed to overcome the traditional inefficiencies that are said to be common with today’s typical low-pressure devices. Accurate to ±5% at crack pressures from 0.2 to 15 psi, where most relief valves reportedly have a greater than 50% tolerance, these units eliminate the usual problems of sticking and elastomer set common in low-pressure models. The L500 relief valves are available as in-line or vent-to-atmosphere with a deflector cap. They are designed and manufactured to meet rigorous OEM industrial application requirements. All models in the extensive Circle Seal range of relief/check valves, pressure regulators, shut-off valves and solenoid valves are produced to handle the most demanding applications.