Spring –Loaded Check Valves (Short Body)

CHECK VALVE SPRING

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Spring –Loaded Check Valves (Short Body)

DN:50-500 mm | PN: 6-40 bar

This valve is used during thrust or suction stroke of the pump to keep the space behind or front of the pump full of fluid and thereby assists in its operation. It is also used in pipes connected to secondary systems, such as a branch, whose pressure may be higher than the main system, to prevent fluid from entering the secondary system into the main system. The check valve should open easily against the upstream flow and have a low head loss in the fully open position. Also, when closing, it should not cause an in appropriate water hammer against the reverse flow.

DN: 50 - 50
mm
PN: 6 - 6
Bar

Application

This valve is used during thrust or suction stroke of the pump to keep the space behind or front of the pump full of fluid and thereby assists in its operation. It is also used in pipes connected to secondary systems, such as a branch, whose pressure may be higher than the main system, to prevent fluid from entering the secondary system into the main system. The check valve should open easily against the upstream flow and have a low head loss in the fully open position. Also, when closing, it should not cause an in appropriate water hammer against the reverse flow.

Product Features and advantages:

  • Reduced disc closure time due to less one-way spring valve movement.
  • Increasing the spring force in order to close the valve faster, is much easier and less expensive than increasing the mass of the weight in check valve weight type.
  • Unlike weighted check valves, spring valves have no external vulnerable part.
  • Unlike weighted check valves, spring check valves can be installed in different directions without the need for structural changes.
  • The design of this valve allows the installation of a butterfly valve immediately after it.
  • Replacement, repair and maintenance of this valve is easier and faster than weight type.
  • The service life of the valve is very high due to the spring and shaft material as well as its suitable bearings.
  • Drilling of flanges according to EN 1092-1 (DIN 2501- ISO 7005-1)
  • Face to face: of flanges according to DIN 3202-F15
  • • Final hydrostatic test of valve in accordance with ( DIN EN 12266-1) ISO 520-1

Corrosion Protection :

Electrostatic epoxy powder coating with minimum  250  thickness and certified by reputable international institutions for potable water.

Spare Parts

Material

Part Name

.Part No

 

Ductile Iron) GJS400-15)

Body

1

 

Ductile Iron) GJS400-15)

Disk

2

 

Ductile Iron) GJS400-15)

Disk Retaining Ring

3

 

Stainless steel (1.4021)

Shaft

4

 

Stainless steel ( 1.4301)

Seat

5

Stainless steel (1.4310)

Spring

6

EPDM or NBR

Sealing

7

 

Bronze

Bushing

8

 

Stainless steel A2

Nuts & Bolts

9

spring – loaded valves can be produced in fully stainless steel as per request

Technical drawings of this valve will be Uploaded soon