Product overview
Rubber flap check valve, also known as rubber flap check valve, is mainly composed of three main parts: valve body, valve cover and valve flap. Among them, the rubber flap is made of steel plate as the pressure-bearing part and reinforced nylon cloth as the backing, the outer layer is made of hot vulcanization integral rubber coating technology, and the valve seat adopts the ceramic spraying process to make the valve life longer. The valve adopts the design of the whole water basin, and has the characteristics of small head loss, not easy to accumulate debris, and easy maintenance. The valve is mainly suitable for water supply and drainage systems.
Features
Due to the small closing stroke, the rubber flap check valve can be fully opened with a stroke angle of only 35°, and the closing speed is fast. Fast closing, 10%-15% travel is slow closing. The slow closing time can be adjusted, the adjustment range is 1-15 seconds, and there is no indication of the opening and closing position of the oil cylinder to reduce the damage of water hammer to the pump.
Main part material
|
Part Name
|
Body
|
Bonnet
|
Disc
|
|
Material
|
Cast iron
|
Cast iron
|
Steel + reinforced nylon cloth
|
Main performance specifications
|
Model
|
Nominal pressure PN (MPa)
|
Sealing test pressure (MPa)
|
Shell test pressure (MPa)
|
Max working pressure (MPa)
|
Medium temperature
|
|
H44X-10
|
1.0
|
1.1
|
1.5
|
1.0
|
0-80℃
|
|
H44X-16
|
1.6
|
1.76
|
2.4
|
1.6
|
Main external dimensions
|
Model
|
DN
|
L
|
D
|
D1
|
dn
|
n
|
|
H44X-10/16
|
50
|
203
|
165
|
125
|
17.5
|
4
|
|
65
|
216
|
185
|
145
|
17.5
|
4
|
|
80
|
241
|
200
|
160
|
17.5
|
8
|
|
100
|
292
|
220
|
180
|
17.5
|
8
|
|
150
|
356
|
285
|
240
|
22
|
8
|
|
200
|
495
|
240
|
295
|
22
|
8
|
|
250
|
622
|
395
|
350
|
22
|
12
|
|
300
|
698
|
445
|
400
|
22
|
12
|
|
350
|
787
|
505
|
460
|
22
|
16
|
|
400
|
914
|
565
|
515
|
22
|
16
|
|
450
|
978
|
615
|
565
|
26
|
20
|
|
500
|
978
|
670
|
620
|
26
|
20
|
|
600
|
1295
|
780
|
725
|
30
|
20
|
