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缓闭式止回阀 300X

产品详情

产品简介:

缓闭式止回阀一般分为隔膜阀和活塞阀两大类,本公司生产的缓闭式止回阀口径在DN500mm以下者采用隔膜型,口径在DN600mm以上者采用活塞型,两者之动作原理类似。缓闭式止回阀具有开启和关闭速度调控和逆止功能,阀门安装能有效控制水泵在启动与停止转动时会自动调节到***开启和关闭的速度。广泛适用于工业给水、高层建筑由水泵直接给水系统中,有效减少水锤及水击现象产生,达到安全关闭效果。
Products Introduction:
Dashpot check valves are usually divided into diaphragm valves and piston valves two categories, the caliber of the  company’s production bellows DN500 using diaphragm type, and DN600 more in the use of piston type, whichever is the principle of similar moves. Dashpot check valve has the function of opening or cutting the speed control and pawl, it can control the water pump availably when the water pump is opening and stopping, the valve will regulate the speed of opening or closing automatically to the best state. It is widely used in the system whose water is supplied by the water pump, such as the industrial water supply、tall building water supply, effectively reduce the times of the water hammer and water beat, up to the safely effect of the closure.
 
主要零部件材质:Material of Main Parts:
序号Sequence Number
部件名称
Part Name
材质Material
1
阀体Body
灰铸铁Cast Iron
2
轴套Busing
不锈钢Stainless Steel
3
阀座Seat
青铜Bronze
5
密封Seal
EPDM
6
阀板Disc
灰铸铁Cast Iron
7
垫片Flake
EPDM with Nylon
9
  螺母Bonnet
灰铸铁Cast Iron
10
  弹簧Spring
不锈钢
Stainless Steel
11
转轴
Stem
不锈钢
Stainless Steel
 
 
 
 
 
 
 
 
 
 
 
 
 
 
主要性能参数Main Performance Parameters:
隔膜式:DN20-500
活塞式:DN600-800
公称压力Nominal Pressure PNMPa
1.0
1.6
2.5
法兰连接标准Flange Design Standard
GB/T 17241.6-1998
GB/T9113.1-2000
壳体试验压力
Shell Testing PressureMPa
1.5
2.4
3.75
密封试验压力
Sealing Testing PressureMPa
1.1
1.76
2.75
***入口压力
Max Pressure of EntranceMPa
1.0
1.6
2.5
***动作压力Min Pressure of MotionMPa
≥0.07
工作温度Working Temperature
0℃~80℃
适用介质Suitable Mediums
水Water
 
主要外形尺寸和连接尺寸:Outline Dimensions & Connection Dimensions:
 
公称通径
Nominal Diameter
DN (mm)
L
A
A1
H
H1
F
20
180
282
200
172
106
116
25
180
     282
200
172
106
116
32
180
282
200
172
106
116
40
240
320
210
265
210
170
50
240
320
210
265
210
170
65
250
     330
215
310
215
180
80
285
350
220
350
245
210
100
360
410
230
460
305
275
125
400
420
245
520
365
310
150
455
430
260
570
415
355
200
585
440
280
695
510
460
250
650
450
300
780
560
500
300
800
460
320
905
658
580
350
860
470
340
1025
696
650
400
960
480
360
1080
735
715
450
970
530
395
1030
610
780
500
1075
580
420
1135
665
830
600
1230
600
445
1270
725
920
700
1650
730
495
1460
865
980
800
1750
830
530
1640
925
1050


缓闭式止回阀 300X
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