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美標(biāo)不銹鋼旋啟式止回閥

產(chǎn)品信息

特點(diǎn)

法蘭止回閥

產(chǎn)品詳情

美標(biāo)旋啟式止回閥是指依靠介質(zhì)本身流動(dòng)而自動(dòng)開、閉閥瓣,用來防止介質(zhì)倒流的閥門,又稱逆止閥、單向閥、逆流閥、和背壓閥。止回閥屬于一種自動(dòng)閥門,其主要作用是防止介質(zhì)倒流、防止泵及驅(qū)動(dòng)電動(dòng)機(jī)反轉(zhuǎn),以及容器介質(zhì)的泄放。止回閥還可用于給其中的壓力可能升至超過系統(tǒng)壓的輔助系統(tǒng)提供補(bǔ)給的管路上。止回閥主要可分為旋啟式止回閥(依重心旋轉(zhuǎn))與升降式止回閥(沿軸線移動(dòng))。這種類型的閥門的作用是只允許介質(zhì)向一個(gè)方向流動(dòng),而且阻止方向流動(dòng)。通常這種閥門是自動(dòng)工作的,在一個(gè)方向流動(dòng)的流體壓力作用下,閥瓣打開;流體反方向流動(dòng)時(shí),由流體壓力和閥瓣的自重合閥瓣作用于閥座,從而切斷流動(dòng)。

主要外形尺寸及連接尺寸:

美標(biāo)(ANSI)150LB
DNDN/inLDD1D2bzxфdH≈
401 1/216512598.47312.74xф16154
50203150120.792.114.34xф19144
652 1/2216180139.7104.815.94xф19150
803241190152.412717.54xф19210
1004292230190.5157.222.38xф19217
1255330255215.9185.722.38xф22.5235
1506356280241.321623.98xф22.5305
2008495345298.5270278xф22.5370
25010622405362323.828.612xф25.5417
30012698485431.838130.212xф25.5478
35014787535476.3412.833.412xф28.5540
40016864595539.84703516xф28.5620
45018978635577.9533.438.116xф32685
50020978700635584.241.320xф32720
600241295815749.3692.246.120xф35880
650261295870806.474966.724xф35910
700281448925863.680069.928xф351050
750301524985914.485773.128xф351050
美標(biāo)(ANSI)300LB
DNDN/inLDD1D2bzxфdH≈
401 1/2241155114.37319.14xф22.5165
50267165127.292.120.78xф19170
652 1/2292190149.2104.823.98xф22.5190
803318210168.3127278xф22.5216
1004356255200157.230.28xф22.5260
1255400280235185.733.48xф22.5280
1506444320269.92163512xф22.5305
2008533380330.227039.712xф25.5368
25010622445387.4323.846.116xф28.5410
30012711520450.838149.316xф32445
35014838585514.4412.852.420xф32570
40016864650571.547055.620xф35630
45018978710628.6533.458.824xф35676
500201016775685.8584.26224xф35740
600241346915812.8692.268.324xф41900
650261346970876.374977.828xф44.5930
7002814991035939.880084.228xф44.51163
750301594109099785790.528xф481270
美標(biāo)(ANSI)600LB
DNDN/inLDD1D2bzxфdH≈
5029216512792.125.48xф19203
652 1/2330190149.2104.828.68xф22.5229
803356210168.312731.88xф22.5235
1004432275215.9157.238.18xф25.5286
1255508330266.7185.744.58xф28.5340
1506559355292.121647.712xф28.5365
2008660420349.227055.612xф32445
25010787510431.8323.863.516xф35500
3001283856048938166.720xф35545
35014889605527412.87020xф38670
4001699168560347076.220xф41715
450181092745654533.482.624xф44.5785
500201194815723.9584.29024xф44.5845
600241397940838.2692.2101.624xф511025


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