不銹鋼安全閥是一種安全保護(hù)用閥,按安全閥閥瓣開啟高度可分為微啟式安全閥和全啟式安全閥,微啟式安全閥的開啟行程高度為:≤0.05d0(zui小排放喉部口徑);全啟式安全閥開啟高度為≤0.25d0(zui小排放喉部口徑)。
不銹鋼安全閥按結(jié)構(gòu)形式來分,要分為垂錘式、杠桿式、彈簧式和先導(dǎo)式(脈沖式);按閥體構(gòu)造來分,可分為封閉式和不封閉式兩種。封閉式安全閥即排除的介質(zhì)不外泄,全部沿著出口排泄到地點,一般用在有毒和腐蝕性介質(zhì)中。對于空氣和蒸汽用安全閥,多采用不封閉式安全閥。對于安全閥產(chǎn)品的選用,應(yīng)按實際密封壓力來確定。對于彈簧式安全閥,在一種公稱壓力(PN)范圍內(nèi),具有幾種工作壓力級的彈簧,訂貨時除注明安全閥型號、名稱、介質(zhì)和溫度外,尚應(yīng)注明閥體密封壓力,否則按zui大密封壓力供貨。
主要連接尺寸:
型 號 | 公稱 | 主要結(jié)構(gòu)尺寸(mm) | 閥體 材料 | 簡要性能 | 備注 | ||||||
通徑 DN(mm) | 壓力 PN(Mpa) | D | D1 | L | L1 | H | 適用溫度 ℃ | 適用介質(zhì) | |||
A21W-16P | 15 | 1.6 |
|
| 35 | 60 | 64 | 1Cr18Ni9Ti | ≤200 | 醋酸類 |
|
" | 20 | " |
|
| 40 | 68 | 68 | " | " | " |
|
" | 25 | " |
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| 50 | 78 | 105 | " | " | " |
|
A21W-25P | 15 | 2.5 |
|
| 35 | 60 | 64 | 1Cr18Ni9Ti | " | " |
|
" | 20 | " |
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| 40 | 68 | 68 | " | " | " |
|
" | 25 | " |
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| 50 | 78 | 105 | " | " | " |
|
A21W-40P | 15 | 4.0 |
|
| 35 | 60 | 64 | " | " | " |
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" | 20 | " |
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| 40 | 68 | 68 | " | " | " |
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" | 25 | " |
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| 50 | 78 | 105 | " | " | " |
|
A41Y-16P | 32 | 1.6 | 135 | 135 | 115 | 100 | 266 | 1Cr18Ni9Ti | ≤200 | 醋酸類 |
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" | 40 | " | 145 | 145 | 120 | 105 | 318 | " | " | " |
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" | 50 | " | 160 | 160 | 130 | 115 | 350 | " | " | " |
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" | 65 | " |
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|
|
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| " | " | " |
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" | 80 | " | 195 | 195 | 160 | 135 | 385 | " | " | " |
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" | 100 | " | 215 | 215 | 170 | 160 | 525 | " | " | " |
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" | 150 | " |
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| " | " | " |
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" | 200 | " |
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| " | " | " |
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