Product Details: The Bendix M16 x 1.5-6H Inlet Port 250 ± 10 psi ST-4 Safety Valve is designed to provide pressure relief in a system when the pressure exceeds a predetermined set point. This valve is made of brass and stainless steel for superior durability and is highly resistant to rust and corrosion. The spring-loaded valve is designed to open when the pressure exceeds the set point, allowing the pressure to be released and preventing damage to the system. This valve is ideal for applications where safety and reliability are paramount. FleetPride is your First Click in Heavy Duty®.