Cat 7190 Pressure Relief Valve Adjuatable 200 to 5000 psi 3/8 BSP F British Standard Pipe Thread Female
This is a secondary protection device that should be installed in addition to the primary pressure regulator or unloader. It is typically set approximately 200 PSI above the system pressure set on the primary valve. It offers additional protection to the pump and is recommended in larger capacity and higher pressure systems.