Butterfly type micro resistance slow closing check valve
Valve Type: |
Tilting disc check valve |
Structure: |
Swing type |
Standard: |
EN/DIN/API |
Workmanship: |
Investment casting |
Sealing direction: |
Single-directional |
Sealing grade: |
Zero leakage |
Temperature: |
-20°C<T<120°C |
Operation: |
Self-starting |
Characteristics
This tilting disc slow closing check valve is made of epoxy coated GGG40 ductile iron. Equipped with external hydraulic buffer for two-stage closing to eliminate water hammer and impact noise. Full EPDM coated disc achieves zero leakage, low flow resistance saves pump power. Standard flanged design, widely applied in municipal water supply, sewage and fire protection pump station pipeline systems.

Advantages
1.The tilting disc slow closing check valve has two-stage slow closing structure greatly suppresses water hammer surge, prevents pump reversal and pipeline damage, reducing maintenance frequency for pump station systems.
2.The eccentric disc slow closing check valve brings ultra-low flow resistance and large flow capacity, cutting long-term power consumption for continuous water delivery pump stations.
3.Epoxy coated ductile iron body features excellent anti-corrosion performance. Standard flange size realizes direct replacement of old valves without pipeline reconstruction, saving engineering transformation cost.
Packing
Standard export wooden case packaging

Application Scenarios
This water hammer proof one way valve widely used in municipal water supply pump stations, sewage treatment plant pipelines, high-rise fire water systems, HVAC circulating water pipes, large farmland irrigation pump stations and industrial park water supply mains.

Material of main parts
|
Components name |
Valve body |
Valve petal |
Valve lever,cylinder,piston |
Spring |
Valve seat |
|
Material |
Cast iron,cast steel |
Carbon steel |
Stainless steel |
Stainless steel |
Ding nitrile rubber |
Main Dimension

|
DN (mm) |
L |
H |
H1 |
|
40 |
140 |
200 |
88 |
|
50 |
150 |
215 |
98 |
|
65 |
170 |
225 |
108 |
|
80 |
180 |
235 |
118 |
|
100 |
190 |
280 |
130 |
|
125 |
200 |
290 |
148 |
|
150 |
210 |
310 |
172 |
|
200 |
230 |
350 |
210 |
|
250 |
250 |
415 |
240 |
|
300 |
270 |
450 |
264 |
|
350 |
290 |
480 |
297 |
|
400 |
310 |
550 |
324 |
|
450 |
330 |
585 |
351 |
|
500 |
350 |
640 |
379 |
|
600 |
390 |
720 |
434 |
|
700 |
430 |
780 |
491 |
|
800 |
470 |
840 |
549 |
|
900 |
510 |
990 |
600 |
|
1000 |
550 |
1050 |
655 |
|
1200 |
630 |
1210 |
770 |
















