◆ Stuff-adding valves
 Ⅰ: Imported stuff-adding valve---IFV type
Pressure: -0.1~1.0Mpa
Flange connect standard: ANSIB16.5 150bl
Ⅱ: Stuff-adding valve (made in China)---LFV type
Pressure: -0.1~0.6Mpa
Flange connect standard: HGJ45,PN0.6
Ⅲ: 7 9 stuff-adding vavle---UFV type of DFV type
Pressure: 0.4Mpa
Flange connect standard: HG5010
Ⅳ: Stuff-adding valve with temperature survey---TFV type
Pressure: according to LFV of 79 valve
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