CN EN
导航

凸耳对夹双瓣式止回阀


产品型号:H76H/W
产品规格:NPS2~48" (DN50~1200mm)
工作压力:PN20~260,150LB-2500LB
适用介质:水、蒸汽、油品、硝酸、强氧化性介质及尿素等
主要材料:WCB、CF3、CF8、CF3M、CF8M
设计标准:API594,API 6D,ASME B16.34
结构长度:API 594,API 6D,ASME B16.10
连接端:ASME B16.5,ASME B16.47
试验标准:API 598,API 6D

产品概述

      凸耳对夹双瓣式止回阀用于管路系统中。该阀流道通畅阻力小,动作灵敏,密封性能好。其主要作用是防止介质倒流、防止泵及其驱动电动机反转,以及容器内介质的泄放。所以被广泛应用于化工、医药、食品、市政水力等行业。该阀安装位置不受限制,通常安装于水平管路上,但也可以安装于垂直管路或倾斜管路上。


产品特点

1、凸耳对夹双瓣式止回阀主要由阀体、阀瓣、阀杆及弹簧等结构组成。

2、由于阀体的结构短、重量轻,阀瓣关闭行程短关闭迅速,减少水锤水击等特点。

3、阀瓣为半圆双瓣结构,可绕阀体内的转轴旋转,转轴的轴线必须和阀体密封面在一个平面上,保证关闭时达到密封。

4、连接方式采用了对夹凸耳结构,可使阀体外形更加美观、体积小、重量轻。


image.png


主要连接尺寸及重量

压力级
口径DN尺寸(mm)
重量
(kg)
配管法兰(供参考)
NPSDNLD1D2D3D4P螺孔
数量

螺孔直径d1n螺栓
数量
螺栓直径d螺栓长度L1
RFRJinmminmmRFRJ
Class 150
PN2.0MPa
25060120.592102515682.5543/4191.6445/8M16140155
2 1/26567139.51051216573101.643/4191.65.545/8M16150165
38073152.51271338088114.343/4191.6745/8M16160175
410073190.5157171102108149.22583/4191.61185/8M16170185
512586216186194127132171.4587/8221.61583/4M20190205
615098241.5216219152160193.67587/8221.61983/4M20205220
8200127298.5270273203210247.6587/8221.63683/4M20240255
10250146362324330254266304.801121251.661127/8M24270285
12300181432381406305310381.001121251.6119127/8M24310325
14350184476413425350355396.876121 1/8291.6131121M27325340
16400191540470483400405454.026161 1/8291.6180161M27340355
18450203578533546450455517.526161 1/4321.6203161 1/8M30365380
20500219638584597500505558.801201 1/4321.6275201 1/8M30385400
24600222749.5692711600605673.101201 1/4351.6314201 1/4M33405420
28700305795.5762-700700-407/8221.6910403/4M20455-
30750305846813-746750-447/8221.61025443/4M20455-
32800305900864-796800-487/8221.61344483/4M20460-
369003681009.5972-898910-441251.61536447/8M24540-
4210504321171.51130-10501055-481 1/8291.62310481M27625-
48120052413351289-12001205-441 1/4321.63364441 1/8M30740-


主要连接尺寸及重量

压力级
口径DN尺寸(mm)
重量
(kg)
配管法兰(供参考)
NPSDNLD1D2D3D4P螺孔
数量

螺孔直径d1n螺栓数量螺栓直径d螺栓长度L1
RFRJinmminmmRFRJ
Class 300
PN5.0MPa
2506012792108515882.5583/4191.6685/8M16155175
2 1/265671491051276573101.687/8221.6783/4M20175195
38073168.51271468088123.82587/8221.61083/4M20190210
410073200157175102108149.22587/8221.61683/4M20195215
512586235186210127132171.4587/8221.62983/4M20215235
615098270216241152160211.138127/8221.632123/4M20230250
8200127330270302203210269.876121251.655127/8M24280300
10250146387.5324356254266323.851161 1/8291.682161M27315335
12300181451381413305310381.001161 1/4321.692161 1/8M30365385
14350222514.5413457350355419.101201 1/4321.6251201 1/8M30410430
16400232571.5470508400405469.901201 3/8351.6342201 1/4M33435455
18450264628.5533575450455533.401241 3/8351.6391241 1/1M33475495
20500292686584635500505584.201241 3/8351.6536241 1/4M33510535
24600318813692749600608692.151241 5/8411.6833241 1/2M39560585
30750368921845-7357400-361 1/2381.61395361 3/8M36650-
3690048310891010-873880-321 3/4451.6182321 5/8M42800-
42105056812451168-10351045-361 7/8481.63861361 3/4M45920-
48120062914161327-11791190-402511.64370401 7/8M481010-
Class 600
PN11.0MPa
2506012792108515882.5583/4196.46.585/8M16175180
2 1/265671491001276573101.687/8226.4883/4M20195200
380731681271468088123.82587/8226.41083/4M20210215
410079216157175102108149.22581256.42187/8M24235240
5125105266.5186210127136180.97581 1/8296.42481M27280285
6150136292216241152162211.138121 1/8296.457121M27320325
8200165349270302200212269.876121 1/4326.494121 1/8M30370375
10250213432324356250266323.851161 3/8356.4164161 1/4M33440445
12300229489381413305312381.001201 3/8356.4213201 1/4M33460465
14350273527413457337355419.101201 1/2386.4343201 3/8M36520525
16400305603470508387400469.901201 5/8416.4476201 1/2M39575580
18450362654533575438450533.401201 3/4446.4685201 5/8M42650655
20500368724584635489500584.201241 3/4446.4908241 5/8M42670680
24600438838692749591600692.151242526.41088241 7/8M48780790


主要连接尺寸及重量

压力级
口径DN尺寸(mm)
重量
(kg)
配管法兰(供参考)
NPSDNLD1D2D3D4P螺孔
数量

螺孔直径d1n螺栓
数量
螺栓直径d螺栓长度L1
RFRJinmminmmRFRJ
Class 900
PN15.0MPa
25070165.192124515895.2582266.41387/8M24225230
2 1/26583190.51051376573107.9581 1/8296.41881M27250255
38083190.51271568090123.8281266.42187/8M24240245
4100102234.9157181102108149.2281 1/4326.43681 1/8M30285290
5125110279.4186216127136180.9881 3/8356.46581 1/4M33310315
61500159317.5216241150162211.12121 1/4326.482121 1/8M30365370
8200203393.7270308200212269.88121 1/2396.4174121 3/8M36440445
10250241469.9324362250266323.85161 1/2396.4264161 3/8M36490495
12300292533.4381416305312381201 1/2396.4211201 3/8M36560565
14350356558.8413467337355419.1201 5/8426.4612201 1/2M39645655
16400384615.9470524387400469.9201 3/4456.4712201 5/8M42685695
18450451685.8533594438450533.4202516.41160201 7/8M48790805
20500451749.3584648487496584.2202 1/8546.41568202M52810925
24600495901.7692772591600692.158202 5/8676.41881202 1/2M64945965
Class1500
PN26.0MPa
25070165.192124515895.2581266.41487/8M24225230
2 1/26583190.51001376573107.9581 1/8296.41981M27250255
38083203.21251688090136.5281 1/4326.42581 1/8M302702758
4100102241.3157194102108161.9281 3/8356.44381 1/4M33310315
5125110292.1186229127136193.6881 5/8426.47281 1/5M39370375
6150159317.5216248150162211.12121 1/2396.4101121 3/8M36430440
82002063963.7270318200212269.8121 3/4456.4240121 5/8M42510520
10250248482.6324371254266323.85122516.4306121 7/8M48600610
12300305581.5381438305312381162 1/8546.4541162M52695715
14350356635413489337355419.1162 3/8616.4932162 1/4M56775800
16400384704.8470546387387469.9162 5/8676.4980162 1/2M64850880
Class2500
PN26.0MPa
25070171.4921334242101.681 1/8296.41981M27225260
2 1/26583196.81051495252111.1281 1/4326.43181 1/8M30290305
38086228.6127168626212781 3/8356.438881 1/4M33320330
41001052731572038888157.1881 5/8426.46981 1/2M39370380
5125110323.8186241100100190.581 7/8486.413581 3/4M45420435
6150159368.3216279150150228.682 1/8546.418482M52515530
8200206438.1270340180180279.4122 1/8546.4380122M52600620
10250254539.7324425225225342.9122 5/8676.4489122 1/2M64750775
12300305619.1381495266266406.4122 7/8746.4747122 3/4M70855885