Pressure Relief Valves

Lee insert-style pressure relief valves are designed to install into metal housings and feature an integral locking end that provides secure retention and prevents bypass leakage. This makes installation simple – no threads, sealants, or O-rings are needed. In addition, these products are 100% tested to ensure long life and guaranteed performance, eliminating the need for customer rework.

Our insert-style pressure relief valves feature both guided ball and poppet-style configurations. Guided ball designs ensure a fast response time, low hysteresis, and highly repeatable cracking pressures. Look for our valves in 5.5 mm and 8.0 mm diameters with both forward and reverse configurations. Both versions are available in an all-stainless-steel construction, some with a ceramic ball option for use with aggressive fluids and gases. They can also be purchased with an integral safety screen to mitigate contamination. Hard seat and elastomeric seat styles are available.

The newest addition to our line of insert-style valves, Lee poppet-style pressure relief valves, provide faster opening rates, more stable flows, higher cracking pressure capabilities, and lower hysteresis than typical ball-style relief valves. Additionally, this optimized design allows for higher flows and smaller package sizes than other traditional valves or in-house designs. Use these valves in systems with a wide range of relief pressures, up to 220 bar. Available in forward and reverse flow configurations, these new valves give system designers additional flexibility to optimize their system layout while keeping safety in mind.