对夹升降式止回阀
产品型号：DN15-DN200
主要外形尺寸： H71对夹升降式止回阀的流体阻力系数、流量用开启压力
公称通径 阀门全开启时的流体阻力系数ζ 常温下阀门全开启时的水流量系数 流体的流向
DN NPS Kv(m3/h) CV(U.S) CV(U.K) ↑ ↓ →
开启压力近似的值KPa
15 1/2 6.4 2.6 3.0 2.5 3 2 2.5
20 3/4 5.1 6.4 7.5 6.3 3 2 2.5
25 1 4.1 12.6 14.8 12.3 3 2 2.5
32 11/4 4.1 19.7 23.1 19.3 3 2 2.5
40 11/2 3.8 29.5 34.5 28.9 3 2 2.5
50 2 3.5 54.6 63.9 53.5 3 2 2.5
65 21/2 3.5 85.4 99.9 83.7 3 2 2.5
80 3 3.2 2 2.5
100 4 2.8 2 2.5
125 5 2.9 1 2.2
150 6 3.1 1 2.2
200 8 3.2 3 1 2.2
H71系列对夹升降式止回阀的型号、材料及主要参数
配管法兰 公称压力 常规产品型号
JB/T74～90、GB/T9112～9124、HG20592～20614 PN1.0MPa H71H-10C H71W-10P H71W-10P8 H71W-10P3 H71W-10R H71W-10R8 H71W-10R3
PN1.6MPa H71H-16C H71W-16P H71W-16P8 H71W-16P3 H71W-16R H71W-16R8 H71W-16R3
PN2.5MPa H71H-25 H71W-25P H71W-25P8 H71W-25P3 H71W-25R H71W-25R8 H71W-25R3
PN4.0MPa H71H-40C H71W-40P H71W-40P8 H71W-40P3 H71W-40R H71W-40R8 H71W-40R3
PN6.3MPa H71H-63 H71W-63P H71W-63P8 H71W-63P3 H71W-63R H71W-63R8 H71W-63R3
PN10.0MPa H71H-100 H71W-100P H71W-100P8 H71W-100P3 H71W-100R H71W-100R8 H71W-100R3
PN16.0MPa H71H-160 H71W-160P H71W-160P8 H71W-160P3 H71W-160R H71W-160R8 H71W-160R3
GB/T9112～9124、HG20615～20635、SH3406 PN2.0MPa H71H-20C — H71W-20P8 H71W-20P3 — H71W-20R8 H71W-20R3
PN5.0MPa H71H-50 — H71W-50P8 H71W-50P3 — H71W-50R8 H71W-50R3
PN11.0MPa H71H-110 — H71W-110P8 H71W-110P3 — H71W-110R8 H71W-110R3
PN15.0MPa H71H-150 — H71W-150P8 H71W-150P3 — H71W-150R8 H71W-150R3
ANSIB16.5 Class150 H71H-A1C — H71W-A1P8 H71W-A1P3 — H71W-A1R8 H71W-A1R3
Class300 H71H-A3 — H71W-A3P8 H71W-A3P3 — H71W-A3R8 H71W-A3R3
Class600 H71H-A6 — H71W-A6P8 H71W-A6P3 — H71W-A6R8 H71W-A6R3
Class900 H71H-A9 — H71W-A9P8 H71W-A9P3 — H71W-A9R8 H71W-A9R3
主要零件材料 阀体 WCB(A105) ZG1Cr18Ni9Ti CF8(304) CF8(304L) ZG1Cr18Ni12Mo2Ti CF8M(316) CF3M(316L)
阀瓣 2Cr13 1Cr18Ni9Ti 0Cr1