| 详细介绍：
HH44X微阻缓闭止回阀产品概况
HH44X微阻缓闭消声止回阀产品简介:
HH44X微阻缓闭消声止回阀可用在清水、污水、海水等介质的排水水泵出口管道上，既能用于防止停泵时有压水流对水泵的冲击，又能防止介质的倒流，保证管线的使用安全。它具有结构新颖、体积小、重量轻、流体阻力小、密封可靠、启闭平稳、使用寿命长、关闭无噪声等特点。
Product Brief Introduction:
The valve is installed at the outlet of pump and suited to prevent media from flowing backwards and eliminate effectively damageable water hammer in pipelines flowing media of fresh water , polluted water , sea water. It has character as followings: modern structure ,small volume ,light weight ,low resistance ,reliable seal ,stable operation , long duration ,small volume.
HH44X微阻缓闭消声止回阀主要性能参数：Main Performance Parameters:
|
公称压力Nominal Pressure( bar)
|
10
|
16
|
|
适用温度 Suitable Temp ( oC )
|
≤85
|
|
试验压力（MPa）
TestingPressure
|
壳 体Shell
|
1.5
|
2.4
|
|
密 封Seal
|
1.1
|
1.76
|
|
适用介质 Suitable Media
|
水、污水、海水等
Water, polluted water , sea water
|
|
设计标准Design Standard
|
GB/T 12232-2005
|
|
试验检验标准
Test and check up standard
|
GB/T 13927-1992
|
|
结构长度标准Face to face dimensions
|
GB/T 12221
|
|
法兰连接标准Flange Standard
|
GB/T 17241.6-98
|
HH44X微阻缓闭消声止回阀主要零部件材质：Materials of Main Parts:
|
名 称 Name
|
材 料 Material
|
阀 体 Body
|
灰铸铁，铸钢 Cast Iron，Carbon Steel
|
阀瓣Valve petal
|
不锈钢Stainless Steel
|
阀杆、活塞Stem、Piston
|
不锈钢Stainless Steel
|
弹 簧Spring
|
不锈钢Stainless Steel
|
阀 座Seat
|
不锈钢Stainless Steel
|
HH44X微阻缓闭消声止回阀主要外形尺寸及连接尺寸：Outline Dimensions & Connection Dimensions:
|
DN(mm)
|
D
|
D1
|
D2
|
n-Φd
|
L
|
H
|
|
50
|
165
|
125
|
100
|
4-Φ18
|
230
|
260
|
|
65
|
185
|
145
|
120
|
4-Φ18
|
290
|
320
|
|
80
|
200
|
160
|
135
|
8-Φ18
|
310
|
254
|
|
100
|
220
|
180
|
155
|
8-Φ18
|
350
|
288
|
|
125
|
250
|
210
|
185
|
8-Φ18
|
400
|
325
|
|
150
|
285
|
240
|
210
|
8-Φ23
|
480
|
400
|
|
200
|
340
|
295
|
265
|
12-Φ23
|
500
|
460
|
|
250
|
395/405
|
350/355
|
320
|
12-Φ23/12-Φ28
|
600
|
510
|
|
300
|
445/460
|
400/410
|
375/370
|
12-Φ23/12-Φ28
|
700
|
590
|
|
350
|
505/520
|
460/470
|
435/429
|
16-Φ23/16-Φ28
|
800
|
650
|
|
400
|
565/580
|
515/525
|
482/480
|
16-Φ28/16-Φ31
|
900
|
.750
|
|
500
|
670/715
|
620/650
|
608/608
|
20-Φ28/20-Φ34
|
1100
|
860
|
|
600
|
780/840
|
725/770
|
718/720
|
20-Φ31/20-Φ37
|
1300
|
1030
|
|
700
|
895/910
|
840/840
|
788/794
|
24-Φ30/24-Φ37
|
1400
|
1270
|
|
800
|
1015/1025
|
950/950
|
898/901
|
24-Φ33/34-Φ41
|
1500
|
1510
|
| 
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