全啟式安全閥上海思氟閥門有限公司

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1、全啟式安全閥概述： 全啟式安全閥，是指開啟高度大于等于1/4流道直徑的安全閥。這種安全閥的動(dòng)作特性屬于兩段作用式安全閥。 安全閥的主要參數(shù)是排量，這個(gè)排量決定于閥座的口徑和閥瓣的開啟高度，由開啟高度不同，又分為微啟式和全啟式兩種。微啟式是指閥瓣的開啟高度為閥座喉徑的1/40～l/20。全啟式是指閥瓣的開啟高度為閥座喉徑的1/4。 全啟式安全閥：應(yīng)用在蒸汽介質(zhì)是一般有一個(gè)突然全開動(dòng)作，此突開動(dòng)作時(shí)的壓力為整定壓力（突跳壓力）；應(yīng)用在空氣介質(zhì)是，先打開與進(jìn)口壓力增加開高呈比例升高，然后再突然起跳全開，稱二段式開啟；一般不可用于液體介質(zhì)。 微啟式安全閥：先打開與進(jìn)口壓力增加開高呈比例升高

2、，壓力下降時(shí)亦隨進(jìn)口壓力下降開高呈比例下降，一般用于液體介質(zhì)（或保護(hù)管道時(shí)用于可壓縮氣體）。 全啟式安全閥結(jié)構(gòu)圖： 全啟式安全閥主要連接尺寸： 型號(hào) 公稱 主要結(jié)構(gòu)尺寸(mm) 閥體 材料 簡(jiǎn)要性能 備注 通徑 DN(mm) 壓力 PN(Mpa) D D1 L L1 H 適用溫度 ℃ 適用介質(zhì) A42Y-16C 32 1.6 135 146 115 110 285 鑄鋼 ≤300 油品、空氣等 " 40 " 150 160 120 110 278 " " " " 50 " 165

3、 180 135 120 332 " " " " 65 " " " " " 80 " 200 215 170 135 478 " " " " 100 " 220 245 205 160 590 " " " " 150 " 280 310 255 230 650 " " " " 200 " " " " A42Y-40 32 4.0 140 150 115 100 285 鑄鋼 ≤300 油品、空氣等 "

4、 40 " 145 160 130 120 278 " " " " 50 " 160 180 145 130 332 " " " " 65 " " " " " 80 " 195 215 170 150 478 " " " " 100 " 230 245 205 185 590 " " " " 150 " 300 310 255 230 650 " " " " 200 " " " " A42Y-6

5、4 32 6.4 鑄鋼 ≤300 油品、空氣等 " 40 " 165 160 130 120 308 " " " " 50 " 175 180 155 130 464 " " " " 65 " " " " " 80 " 210 230 175 160 582 " " " " 100 " 250 270 195 195 600 " " " A42Y-100 32 10.0 鑄鋼 ≤300 油品

6、、空氣等 " 40 " " " " " 50 " 195 180 155 130 500 " " " " 65 " " " " " 80 " 230 230 175 160 760 " " " " 100 " 265 270 220 210 750 " " " SA42Y-160 32 16.0 115 165 150 150 397 鑄鋼 ≤200 氮、氨氣、油品、空氣 " 40 " 165 200 1

7、65 165 438 " " " SA42Y-320 32 3.2 135 165 150 150 395 鑄鋼 ≤200 氮、氨氣、油品、空氣 " 40 " " " " SA42Y-400 32 40.0 135 165 150 150 397 鑄鋼 ≤200 氮、氨氣、油品、空氣 " 40 " " " " A44Y-16C 32 1.6 鑄鋼 ≤300 油品、空氣等 A44Y-16C 80 1.6 200 2

8、20 170 135 538 鑄鋼 ≤300 油品、空氣等 " 100 " 215 245 205 185 655 " " " " 150 " 280 310 255 230 740 " " " " 200 " " " " A44Y-40 32 4.0 鑄鋼 ≤300 油品、空氣等 " 40 " 145 165 130 120 314 " " " " 50 " 160 180 145 130 376 " "

9、" " 65 " " " " " 80 " 195 215 170 150 538 " " " " 100 " 230 245 205 185 655 " " " " 150 " 300 310 255 230 740 " " " " 200 " " " " A44Y-64 32 6.4 鑄鋼 ≤300 油品、空氣等 " 40 " " " " " 50 " 175

10、 180 155 130 520 " " " " 65 " " " " " 80 " 210 230 175 160 810 " " " " 100 " 250 270 195 195 890 " " " A44Y-100 32 10.0 鑄鋼 ≤300 油品、空氣等 " 40 " " " " " 50 " 195 180 155 130 520 " " " " 65 "

11、 " " " " 80 " 230 230 175 160 810 " " " " 100 " 265 270 220 210 780 " " " A48Y-16C 32 1.6 鑄鋼 ≤350 蒸氣等 " 40 " 145 160 130 115 312 " " " " 50 " 160 180 145 130 366 " " " " 65 " " " " " 80 " 195 215 170

12、 150 528 " " " " 100 " 215 245 205 185 655 " " " " 150 " 280 310 255 230 724 " " " " 200 " " " " A48Y-40 32 4.0 鑄鋼 ≤350 蒸氣等 A48Y-64 32 6.4 鑄鋼 ≤350 蒸氣等 　 " 40 " " " " 　 " 50 " 175 180 155 130

13、 508 " " " 　 " 65 " " " " 　 " 80 " 210 230 175 160 655 " " " 　 " 100 " 250 270 195 195 680 " " " 　 A48Y-100 32 10.0 鑄鋼 ≤350 蒸氣等 　 " 40 " " " " 　 " 50 " 195 180 160 130 508 " " " 　 " 65 " " " " 　 " 80 " 180 230 175 160 655 " " " 　 " 100 " 265 270 220 210 785 " " " 　 SFNA-42B25C1 32 " 195 120 185 鍛鋼 ≤55 液化氣 　 " 40 " 230 100 205 " " " 　 " 50 " 270 104 250 " " "