止回閥是能自動(dòng)阻止流體倒流的閥門。止回閥的閥瓣在流體壓力作用下開啟,流體從進(jìn)口側(cè)流向出口側(cè)。當(dāng)進(jìn)口側(cè)壓力低于出口側(cè)時(shí),閥瓣在流體壓差、本身重力等因素作用下自動(dòng)關(guān)閉以防止流體倒流。 |
執(zhí)行標(biāo)準(zhǔn) Administer Standard
種類 Type | 設(shè)計(jì)與制造 Design And Manufacture | 結(jié)構(gòu)長(zhǎng)度 Face to face | 法蘭尺寸 Flange Dimension | 壓力-溫度 Pressure Temperature Lating | 試驗(yàn)-檢驗(yàn) Znspection And Test |
旋啟式止回閥 Swing Check Valve | BG12236 | GB12221 | GB9113 JB79 | GB9131 | GB/T13927 JB/T9092 |
升降式止回閥 Lift Check Valve | GB12235 |
<壓力試驗(yàn)MPa Pressure Test
公稱壓力 Nominal Pressure | 1.6 | 2.5 | 4.0 | 6.4 | 10.0 | 16.0 |
強(qiáng)度試驗(yàn) Shell Test | 2.4 | 3.8 | 6.0 | 9.6 | 15.0 | 24.0 |
水密封試驗(yàn) Water Seal Test | 1.8 | 2.8 | 4.4 | 7.0 | 11.0 | 18.0 |
氣密封試驗(yàn) Air Seal Test | 0.5-0.7 |
<主要零件材料及性能 Main Part Materials and Property
體、蓋、瓣 Body Cover Disc | 閥桿 Stem | 密封面 Sealing Face | 墊片 Sealing Shim | 密封面 Sealing Face | 工作溫度℃ Working Temperature | 適用介質(zhì) Suitable Medium |
WCB | WCB | 1Cr13 | 增強(qiáng)柔性石墨 1Cr13/柔性石墨 不銹鋼/耐酸石棉 PTFE 齒型墊片 Enhanced Flexiblo Graohite 1Cr13/ Flexiblo Graohite Stainless Steel/Acid- proof Asbestos tooth profile gasket | 13Cr STL 本體材料 With Body Material PTFE 尼龍 Nylon | ≤425 | 水 蒸汽 油品 Water Steam Oil Googs |
WC6 | WC6 | ≤540 | ||||
WC9 | WC9 | ≤570 | ||||
ZGCr5Mo | ZGCr5Mo | ≤550 | ||||
ZG1Cr18Ni9Ti | ZG1Cr18NTi | 1Cr18Ni9Ti | ≤200 | 硝酸類Nitric Acid | ||
ZG1Cr18Ni12Mo2Ti | ZG1Cr18Ni12Mo2Ti | 1Cr18Ni12Mo2Ti | ≤200 | 硝酸類Nitric Acid |
規(guī)格主要尺寸和重量 Size Main Dimension and Weight (mm Kg)
1.6MPa | DN | L | D | D1 | D2 | b | n-Φd | H | W(㎏) |
凸面法蘭 RF H41H H41Y H41W H41N 16C 16P 16R | 15 | 130 | 95 | 65 | 45 | 14 | 4-14 | 58 | 2.0 |
20 | 150 | 105 | 75 | 55 | 14 | 4-14 | 63 | 2.7 | |
25 | 160 | 115 | 85 | 65 | 14 | 4-14 | 71 | 3.5 | |
32 | 180 | 135 | 100 | 78 | 16 | 4-18 | 84 | 5.4 | |
40 | 200 | 145 | 110 | 85 | 16 | 4-18 | 96 | 6.5 | |
50 | 230 | 160 | 125 | 100 | 16 | 4-18 | 115 | 9.1 | |
65 | 290 | 180 | 145 | 120 | 18 | 4-18 | 145 | 14 | |
80 | 310 | 195 | 160 | 135 | 20 | 8-18 | 156 | 25 | |
100 | 350 | 215 | 180 | 155 | 20 | 8-18 | 170 | 40 | |
125 | 400 | 245 | 210 | 185 | 22 | 8-18 | 201 | 56 | |
150 | 480 | 280 | 240 | 210 | 24 | 8-23 | 238 | 90 | |
2.5MPa | 15 | 130 | 95 | 65 | 45 | 16 | 4-14 | 60 | 4 |
凸面法蘭 RF H41H H41Y H41W H41N 25 25P 25R | 20 | 150 | 105 | 75 | 55 | 16 | 4-14 | 64 | 5 |
25 | 160 | 115 | 85 | 65 | 16 | 4-14 | 68 | 6 | |
32 | 180 | 135 | 100 | 78 | 18 | 4-18 | 79 | 9 | |
40 | 200 | 145 | 110 | 85 | 18 | 4-18 | 98 | 12 | |
50 | 230 | 160 | 125 | 100 | 20 | 4-18 | 110 | 16 | |
65 | 290 | 180 | 145 | 120 | 22 | 8-18 | 160 | 24 | |
80 | 310 | 195 | 160 | 135 | 22 | 8-18 | 170 | 31 | |
100 | 350 | 230 | 190 | 160 | 24 | 8-23 | 195 | 45 | |
125 | 400 | 270 | 220 | 188 | 28 | 8-25 | 225 | 68 | |
150 | 480 | 300 | 250 | 218 | 30 | 8-25 | 255 | 100 |