ZZYVP Self-blanketing valve, relief valve overview ZZYVP with pilot regulator (nitrogen sealing device) without external energy sources, the use of the medium itself was transferred energy as the power source, the introduction of the pilot pressure valve spool position to control the pressure, changing the medium flow through the valve, the rear end of the valve pressure is maintained constant. Nitrogen valve closure is mainly used for the top of the tank nitrogen pressure constant control, in order to protect the tank and the tank nitride materials are not safe to be. Can also be used for industrial burner control system. Nominal have 1.0,1.6Mpa; pressure segment is adjustable from 0.5 to 1000Kpa, operating temperature 0 ~ 100 ℃; flange standard by GB9113-88, raised face flanges. Structural Length GB12221-89 standards. Nitrogen pressure seal device set on the pilot implementation, and thus convenient, time-saving time can be set under continuous running. 1, 2 conductor, testing actuators 3, took over 4, vacuum filtration along five main valve 6, the main spool 7, stem 8, 9 plunger spring 10, the throttle 11, the pilot spool 12 , mouth screw 13, the main spring ZZYVP Self-blanketing valves, pressure relief valve main parts and materials Part Name Material: Body: ZG230-Ni9Ti, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti spool: 1Cr18Ni9Ti, Cr18Ni12Mo2Ti Diaphragm: Dingqing polyester fabric reinforced rubber clip Technical parameters ZZYVP blanketing nitrogen Self-sealing valve, pressure relief valve main technical parameters and performance indicators nominal diameter DN (mm) 20 25 40 50 80 100 150 seat diameter DN (mm) 6 15 20 25 32 40 50 65 80100125150 rated flow coefficient Kv 3.2 5 8 10 20 32 50 80 100 160 250 400 Pressure adjustment range Kpa 0.5 ~ 70 20 ~ 120 60 ~ 400 300 ~ 700 500 ~ 1000 Nominal pressure PN (Mpa) 1.0 1.6 be transferred media Temperature (℃) 80 200 quick opening flow characteristic regulation accuracy (%) ≤5 allowable pressure drop (Mpa) 1.6 1.6 1.1 0.6 0.4 Actuator film effective area (C m) 200 280 400 allowable leakage comply ANSIB16.104-1976 IV Self-grade ZZYVP nitrogen seal valves, pressure relief valve size and weight of standard flange connection size standard: GB9113-88 flange sealing surface types: convex; Signal Interface: internal thread M16 × 1.5-flanged body flange and distance can be according to user-specified manufacturing standards. Such as ANSI, JIS, JPI and other standards. ZZYVP Self-blanketing valves, relief valves Dimensions Weight nominal diameter (DN) 25 40 50 80 100 150 flange face away from the (L) PN16 160 200 230 310 350 480 A PN16 115 150 165 200 220 285 B PN16 85 110 125 160 180 240 H1 PN16 83 95 110 140 160 230 H2 PN16 325 H PN16 650 680 750 790 840 990 G PN16 16 18 20 20 22 24 S PN16 308 nф PN16 4-14 4-18 4-18 4-18 4 -188-22 Weight (kg) 18 27 40 80 108 262 Self-regulating valve related products: V130D05 type operated flow control valve V230Y Self-pressure regulating valve V231D01 type Self-regulating valve V231 combination pressure regulator type self decline Valve V231 Type Self-pressure regulating valve V23013 type Self-pressure regulating valve ZWP type Self-temperature regulating valve ZZWPE type Self-regulating valve electronically controlled temperature ZZWP type Self-temperature control valve V230 01 Self-pressure regulating valve V230D02 Self-pressure regulating Valve V230W Self-temperature regulating valve V230Y nitrogen valve closure V230Y Self-pressure regulating valve V230 Self-pressure regulating valve V231 03 Self-pressure regulating valve V231 D02 Self-pressure regulating valve ZSY Self-pressure regulating valve ZZDQ Self-nitrogen valve ZZWP self temperature control valve ZZW Self-temperature regulating valve ZZYP Self-pressure regulating valve