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旋启式止回阀

旋启式止回阀

产品简介

旋启式止回阀又称单向阀或逆止阀,其作用是防止管路中的介质倒流。启闭件靠介质流动和力量自行开启或关闭,以防止介质倒流的阀门叫止回阀。止回阀属于自动阀类,主要用于介质单向流动的管道上,只允许介质向一个方向流动,以防止发生事故。本类阀门在管道中一般应当水平安装。


主要性能规范:

试验压力(MPa)公称压力(Mpa)
2.54.06.410.0162025
壳体强度试验3.756.09.615.0243038
密封试验(液)2.754.47.011.017.62227.5
密封试验(气)0.5~0.7
试用介质ACPRI
水、油品、蒸汽硝酸类醋酸类空气、水
使用温度(℃)<425<200<200≤550


尺寸图纸:


主要外形尺寸和连接尺寸(mm):

公称通径 (mm)公称压力 (Mpa)LHDD1D2D6bff2z-d
502.5230160160125100
203
4-18
65290175180145120
223
8-18
80310185195160135
223
8-18
100350220230190160
243
8-23
125400248270220188
283
8-25
150480276300250218
303
8-25
200550350360310278
343
12-25
250650410425370332
363
12-30
300750430485430390
404
16-30
350850518550490448
444
16-34
400950560610550505
484
16-34
5001150618730660610
524
20-41
504.02301691601251008820344-18
6529017318014512011022348-18
8031018519516013512122348-18
1003502202301901601502434.58-23
1254002482702201881762834.58-25
1504802703002502182043034.58-25
2005503423753202822603834.512-30
2506504014453853453134234.512-34
3007504235104504083644644.516-34
350850455570510465422524516-34
400950510655585535474584516-41
506.43001771751351058826344-23
6534019720016013011028348-23
8038021221017014012130348-23
1004302482502001681503234.58-25
1255002962952402021763634.58-30
1505503303402802402043834.58-34
2006503854053453002604434.512-34
2507754454704003523134834.512-41
3009004745304604123645444.516-41
3501025514595525475422604516-41
4001150616670585525474664516-48
5010.03002101951451128828344-25
6534022722017013811032348-25
8038023523018014812134348-25
1004302742652101721503834.58-30
1255003073102502101764234.58-34
1505503473502902502044634.512-34
2006504024303603122605434.512-41
2507754325004303823136034.512-41
3009004845855004423647044.516-48
5016.030021021516513218836348-25
6534022724519015211044348-30
803802352602051681214634.58-30
1004302743002402001504834.58-34
1505503403903182702056634.512-41
2006503744804003452507834.512-48
2507754405804854253138834.512-54
30090050566557051036410034.516-54

H44H(Y、W)-200

公称通径
(mm)

尺寸(mm)(JB79)
LDD1D2D6bfZ-ФdH
50300210160128704038-Ф25120
65340260203165974838-Ф30190
803802902301901165438-Ф34210
1004303602922451386638-Ф41240
15055044036030519082312-Ф48343
20065053544038024592312-Ф48320
250775670572508319110316-Ф48380
H44H(Y、W)-250
公称通径
(mm)
尺寸(mm)(GB9113.25)
LDD1D2D8bb4ff3Z-dH
50300215165124953812888-Ф26220
653402451901371084112888-Ф30230
803802702031681374812888-Ф33245
1004303102411941625412888-Ф36280
15055039531824821183139.59.512-Ф39340
2006504853943182709217111112-Ф45360
25077558548337132410817111112-Ф52395
30090067557143838112423141416-Ф56478    


资料下载:

旋启式止回阀

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