Rubber Disc Check Valve

Purpose

This valve is used mainly for water supply and drainage system and can be set on the pump outlet to prevent the pump from getting harmed by the medium backflow. It can also be set on the mouth of a water outlet pipe to prevent the medium from backflow.

Features

Simple structure, reliable performance, long durable, open—close times can be up to over million ones, suitable for sewage.

Executive Standard

  • Size of flange: GB/T 17241.6.
  • Test and inspection standard. GB/T 13927.

Main Performance Parameters

PN
PN1.6MPa
DN
DN50-600mm
Suitable temperature
≤80°C
Media
Water, Sewage

Main Part Materials

Title
Material
Body
Gray Cast iron/Ductile Iron/Cast iron
Bonnet
Grey cast iron/ductile iron/Cast steel
Disc
Rubber + metal skeleton

Main dimensions

DN
50
65
80
100
125
150
200
250
300
350
400
450
500
600
L
203
216
241
292
330
356
495
622
698
787
914
978
978
1295
D
165
185
200
220
250
285
340
405
460
520
580
640
715
840
D1
125
145
160
180
210
240
295
355
410
470
525
585
650
770
D2
99
118
132
156
184
211
266
319
370
430
480
548
609
720
b
19
19
19
19
19
19
20
22
24.5
26.5
28
30
31.5
36
n-od
4-19
4-19
8-19
8-19
8-19
8-23
12-23
12-28
12-28
16-28
16-31
20-31
20-34
20-37

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