Overview of spring safety valve with wrench

Full open safety valve with spanner spring (a44h, A44Y, a44w full open safety valve with spanner spring): This valve is applicable to equipment or pipelines with air, oil and other media with working temperature ≤ 300 ℃ as an overpressure protection device. Connecting flange standard pn<6.4mpa according to jb/t-94 system example 1. PN ≥ 6.4Mpa according to jb/t-94 Series 2 standard.

A44h, A44Y, a44w wrench spring full lift safety valve structure diagram