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Nominal Pressure   1.0 MPa  1.6 MPa  2.5 MPa

Shell Test Pressure  1.5MPa   2.4MPa  3.75MPa

Sealing Test Pressure   1.1MPa   1.76MPa  2.75MPa

Outlet pressure Adjustable range  0.09-0.8\0.10~1.2\0.15-1.6 MPa

Applicable Temperature   0~≤80C

Applicable Medium   water

The valve is composed of main valve 4, pilot valve I, needle valve 2, ball valve 3 and pressure gauge 5. The pressure relief / holding valve can effectively release the pressure exceeding the safety setting value of pilot valve 1 on the pipeline to prevent damage to the pipeline and equipment due to overpressure. The valve is mainly used for pressure relief of fire test circulation system in high-rise buildings to prevent system failure caused by high water pressure. The driller maintains the upstream water supply pressure of the main valve above a certain set value to ensure the pressure in the upstream water supply area of the main valve.