Non-Slam Check Valves

non-slam check valveCheck valves are primarily used to protect pumps and compressors from damage caused by backflow.
Hills Flow Control, Inc Non Slam Check Valves designed for severe service applications where fast reverse flow exists and conventional check valves are unsuitable for the existing flow conditions.

Installation of Non Slam Check Valves’s offer the systems engineer the opportunity to;

  1. Protect equipment, particularly compressors from expensive damage caused by reverse flow.
  2. Reduce down time and loss of production due to failure or frequent replacement of unsuitable valves.
  3. Make energy savings as a result of low pressure drop.
  4. Eliminate chatter and reduce the possibility of sudden valve failure in reciprocating compressor applications.
  5. Reduce or eliminate water hammer.
  6. Lower maintenance costs – few moving parts.
  7. Reduce reverse velocity using the fast dynamic response of the Hills Flow Control, Inc Non Slam Check Valve.
  8. Smaller footprint than conventional check valves with associated dampers/levers.
  9. Flexibility to cope with variable flow conditions.
  10. API 6D end to end dimension permits interchangeability with most conventional swing check valves without expensive piping modification.

Sizes

Hills Flow Control, Inc Non-Slam Check Valves are supplied in the following sizes:


mm

50

80

100

150

200

250

300

350

400

450

500

600

in

2

3

4

6

8

10

12

14

16

18

20

24

mm

650

700

750

800

900

1000

1050

1200

1250

1300

1400

1500

in

26

28

30

32

36

40

42

48

50

52

56

60

Pressure Classes

ANSI Classes

150

900

300

1500

600

2500

Materials

Body Materials

ASTM A 395a

Ductile Iron

BS2789 GR 420/12

ASTM A 352 GR LCC

Low Temperature Carbon Steel

ASTM A 216 GR WCB

Carbon Steel

ASTM A 351 GR CF8M

316 Stainless Steel

ASTM A 217 GR CA15

410 Stainless Steel

UNS S 31803

Duplex Stainless Steel

Disc Materials

Stainless Steel

Alloy Steel

Stainless Steel

11-13 Chrome

Duplex

End Connections

Flanged, Hub Ended & Weld Ended