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	一、H44J旋啟式襯膠止回閥概述:
止回閥是一種依靠介質(zhì)本身的流動而自動啟、閉閥瓣用來阻止介質(zhì)逆向流動的自動閥門。
二、H44J旋啟式襯膠止回閥技術(shù)規(guī)范:
| 遵循規(guī)范 | STANDARD | 
| 設(shè)計(jì)與制造 | GB/T 12235、GB/T12236 | 
| 結(jié)構(gòu)長度 | GB/T 12221、JB/T 96 | 
| 法蘭尺寸 | JB/T 78、JB/T 79 | 
| 壓力試驗(yàn) | GB/T 13927 | 
| 標(biāo)志 | GB/T 12220 | 
| 供貨 | GB/T 12252 | 
	三、H44J旋啟式襯膠止回閥特點(diǎn):
法蘭連接止回閥
設(shè)計(jì)與制造符合中國國家標(biāo)準(zhǔn)
基本結(jié)構(gòu)形成:旋啟式,直通升降式
公稱壓力:PN1.0~1.6(MPa)
公稱通徑:DN15~500(mm)
基本型號:H41F3、H41F46、H44F3、H44F4
四、H44J旋啟式襯膠止回閥連接尺寸:
 
| 公稱通徑 | 標(biāo)準(zhǔn)值 | 參考值 | |||||||||
| 
					DN | 
					NPS | L1 | D | D1 | D2 | f | b | Z-Φd | Do | H | WT(Kg) | 
| PN0.6Pa | |||||||||||
| 15 | 1/2 | 130 | 80 | 55 | 40 | 2 | 12 | 4-Φ12 | 105 | 55 | 4 | 
| 20 | 3/4 | 150 | 90 | 65 | 50 | 2 | 14 | 4-Φ12 | 115 | 58 | 5 | 
| 25 | 1 | 160 | 100 | 75 | 60 | 2 | 14 | 4-Φ12 | 128 | 60 | 6 | 
| 32 | 11/4 | 180 | 120 | 90 | 70 | 2 | 16 | 4-Φ14 | 145 | 75 | 7 | 
| 40 | 11/2 | 200 | 130 | 100 | 80 | 3 | 16 | 4-Φ14 | 160 | 82 | 8 | 
| 50 | 2 | 230 | 140 | 110 | 90 | 3 | 16 | 4-Φ14 | 178 | 95 | 10 | 
| 65 | 21/2 | 290 | 160 | 130 | 110 | 3 | 16 | 4-Φ14 | 205 | 105 | 20 | 
| 80 | 3 | 310 | 185 | 150 | 125 | 3 | 18 | 4-Φ18 | 230 | 120 | 25 | 
| 100 | 4 | 350 | 205 | 170 | 145 | 3 | 18 | 4-Φ18 | 255 | 135 | 30 | 
| 125 | 5 | 400 | 235 | 200 | 175 | 3 | 20 | 8-Φ18 | 305 | 158 | 50 | 
| 150 | 6 | 480 | 260 | 225 | 200 | 3 | 20 | 8-Φ18 | 345 | 180 | 65 | 
| 200 | 8 | 495 | 315 | 280 | 255 | 3 | 22 | 8-Φ18 | 415 | 215 | 137 | 
| 250 | 10 | 600 | 370 | 335 | 310 | 3 | 24 | 12-Φ18 | 490 | 240 | 150 | 
| 公稱通徑 | 標(biāo)準(zhǔn)值 | 參考值 | |||||||||
| DN(mm) | 
					NPS | L1 | D | D1 | D2 | f | b | Z-Φd | B | H | WT(Kg) | 
| PN1.0MPa | |||||||||||
| 15 | 1/2 | 130 | 95 | 65 | 45 | 2 | 14 | 4-Φ14 | 105 | 55 | 5 | 
| 20 | 3/4 | 150 | 105 | 75 | 55 | 2 | 16 | 4-Φ14 | 115 | 58 | 7 | 
| 25 | 1 | 160 | 115 | 85 | 65 | 2 | 16 | 4-Φ14 | 128 | 60 | 9 | 
| 32 | 11/4 | 180 | 135 | 100 | 78 | 2 | 18 | 4-Φ18 | 145 | 75 | 11 | 
| 40 | 11/2 | 200 | 145 | 110 | 85 | 3 | 18 | 4-Φ18 | 160 | 82 | 13.5 | 
| 50 | 2 | 230 | 160 | 125 | 100 | 3 | 20 | 4-Φ18 | 178 | 95 | 18 | 
| 65 | 21/2 | 290 | 180 | 145 | 120 | 3 | 20 | 4-Φ18 | 205 | 105 | 22 | 
| 80 | 3 | 310 | 195 | 160 | 135 | 3 | 22 | 4-Φ18 | 230 | 120 | 28 | 
| 100 | 4 | 350 | 215 | 180 | 155 | 3 | 22 | 8-Φ18 | 255 | 135 | 34 | 
| 125 | 5 | 400 | 245 | 210 | 185 | 3 | 24 | 8-Φ18 | 305 | 158 | 58 | 
| 150 | 6 | 480 | 280 | 240 | 210 | 3 | 24 | 8-Φ23 | 345 | 180 | 72 | 
| 200 | 8 | 495 | 335 | 295 | 265 | 3 | 26 | 8-Φ23 | 415 | 215 | 150 | 
| 250 | 10 | 622 | 390 | 350 | 320 | 3 | 28 | 12-Φ23 | 490 | 240 | 165 | 
| PN1.6MPa | |||||||||||
| 15 | 1/2 | 130 | 95 | 65 | 45 | 2 | 14 | 110 | 55 | 6 | |
| 20 | 3/4 | 150 | 105 | 75 | 55 | 2 | 16 | 120 | 58 | 7.8 | |
| 25 | 1 | 160 | 115 | 85 | 65 | 2 | 16 | 135 | 60 | 10 | |
| 32 | 11/4 | 180 | 135 | 100 | 78 | 2 | 18 | 150 | 75 | 12.5 | |
| 40 | 11/2 | 200 | 145 | 110 | 85 | 3 | 18 | 165 | 82 | 14.5 | |
| 50 | 2 | 230 | 160 | 125 | 100 | 3 | 20 | 185 | 95 | 19.5 | |
| 65 | 21/2 | 290 | 180 | 145 | 120 | 3 | 20 | 210 | 105 | 25.5 | |
| 80 | 3 | 310 | 195 | 160 | 135 | 3 | 22 | 235 | 120 | 30 | |
| 100 | 4 | 350 | 215 | 180 | 155 | 3 | 24 | 260 | 135 | 36 | |
| 125 | 5 | 400 | 245 | 210 | 185 | 3 | 26 | 310 | 158 | 62 | |
| 150 | 6 | 480 | 280 | 240 | 210 | 3 | 28 | 350 | 180 | 78 | |
| 200 | 8 | 495 | 335 | 295 | 265 | 3 | 30 | 420 | 215 | 156 | |
| 250 | 10 | 600 | 405 | 355 | 320 | 3 | 32 | 505 | 240 | 172 | |