... 600 Body material,: Ductile iron Pilot: SS304 Pressure:PN25/16/10 Certificate with WRAS, KTW, NSF, FDA, ACS. ... : GB/T 13927, ISO5208,EN12266-1PRESSURE: PN10/16/25 ,ANSI CL125/150/300;JIS 10K/16K, ... unloading functions in a by-pass system. In operation, the valve is actuated by line pressure through a ... automatic and pressure settings may be easily changed by adjusting screw on top of the pilot. 1 ...