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Check Valves
Check Valves Hoerbiger air and gas check valves are the answer for dependability. Unlike wafer or butterfly check valves, they provide true non-slamming closing action and low pressure drop. All valves are engineered to handle constant or pulsating flow equally well, a statement others can't make.
  • Depend-A-Check Valves are designed for full-flow efficiency.
  • Compact-A-Check Valves are a cost-effective design for lower flow-rate applications.
  • E-Z Check Valves



Depend-A-Check Valves
Inside Depend-A-Check Valves Depend-A-Check Valves
Hoerbiger Depend-A-Check valves are designed for full-flow efficiency in pipe sizes from 2" to 20". They offer:
  • Fast, frictionless, NON-SLAMMING closing action for maintenance-free reliability.
  • Can readily be designed to handle PULSATING flow equally as well as Constant flow.
  • DAMPENING of system pulsations.
  • Mounting flexibility - vertical, horizontal or inclined for EASE OF INSTALLATION.

Note: These features also apply to COMPACT-A-CHECK valves

Depend-A-Check Dimensions
Flange dimensions are according to ANSI B16.5
Flanges are supplied with raised face if not specified otherwise.

MATERIAL:HOUSING - Steel ASTM A-216WCB. VALVE - Carbon Steel or Cast Iron with Stainless Steel Internals.

ANSI 150
Nominal
Pipe
Size
Housing Bolt Holes
L D1 D2 B1 P.D. NO. DIA.
2" 8 9 6 3/4 4-3/4 4 3/4
3" 9-1/2 12 7-1/2 15/16 6 4 3/4
4" 11-1/2 13 9 15/16 7-1/2 8 3/4
6" 14 17-1/2 11 1 9-1/2 8 7/8
8" 19-1/2 21 13-1/2 1-1/8 11-3/4 8 7/8
10" 24-1/2 23-1/2 16 1-3/16 14-1/4 12 1
12" 27-1/2 25-1/2 19 1-1/4 17 12 1
14" 31 30 21 1-3/8 18-3/4 12 1-1/8
16" 34 32-1/2 23-1/2 1-7/16 21-1/4 16 1-1/8
18" 38-1/2 32-1/2 25 1-9/16 22-3/4 16 1-1/4
20" 38-1/2 42 27-1/2 1-11/16 25 20 1-1/4
ANSI 300
Nominal
Pipe
Size
Housing Bolt Holes
L D1 D2 B1 P.D. NO. DIA.
2" 10-1/2 9-1/2 6-1/2 7/8 5 8 3/4
3" 12-1/2 12-1/2 8-1/4 1-1/8 6-5/8 8 7/8
4" 14 13-1/2 10 1-1/4 7-7/8 8 7/8
6" 17-1/2 17-1/2 12-1/2 1-7/16 10-5/8 12 7/8
8" 21 23 15 1-5/8 13 12 1
10" 24-1/2 25-1/2 17-1/2 1-7/8 15-1/4 16 1-1/8
12" 28 28 20-1/2 2 17-3/4 16 1-1/4
14" 33 30-1/2 23 2-1/8 20-1/4 20 1-1/4
16" 34 36 25-1/2 2-1/4 22-1/2 20 1-3/8
18" 38-1/2 36 28 2-3/8 24-3/4 24 1-3/8
20" 40 47-1/2 30-1/2 2-1/2 27 24 1-3/8
ANSI 600
Nominal
Pipe
Size
Housing Bolt Holes
L D1 D2 B1 P.D. NO. DIA.
2" 11-1/2 10-3/4 6-1/2 1-1/4 5 8 3/4
3" 14 14 8-1/4 1-1/2 6-5/8 8 7/8
4" 17 15-1/2 10-3/4 1-3/4 8-1/2 8 1
6" 22 20 14 2-1/8 11-1/2 12 1-1/8
8" 26 25 16-1/2 2-7/16 13-3/4 12 1-1/4
10" 31 29-1/4 20 2-3/4 17 16 1-3/8
12" 33 32 22 2-7/8 19-1/4 20 1-3/8
14" 35 37 23-3/4 3 20-3/4 20 1-1/2
16" 39 44-1/2 27 3-1/4 23-3/4 20 1-5/8
18" 43 44-1/2 29-1/4 3-1/2 25-3/4 20 1-3/4
20" 47 52 32 3-3/4 28-1/2 24 1-3/4



E-Z Check Valves for Screw Compressors

E-Z Check Valves for Screw Compressors
Valves are designed for dry and oil-saturated air applications.
  • Large passage area provides low pressure drop and fast closing gives security for compressor.
  • Valve plate is guided on the ribs of housing and spring loaded.


E-Z Check Valves for Screw Compressors dimensions
EZ-CHECK VALVES can be clamped between standard flanges.

MATERIAL:

  • Valve seat - galvanized cast iron
  • Valve plate and spring - stainless steel
  • Maximum working pressure to 350 PSIG
Nominal
Size
Type Passage
Area
Sq. Inches
Housing H1
D1 D2
1-1/2" 38A 1.29 2.44 2.40 1.18
2" 50A 2.14 3.55 3.23 1.26
3" 72A 4.77 4.53 4.41 1.81
3-1/2" 90A 6.49 5.59 5.43 1.97
4" 108A 9.77 6.38 6.22 2.36
6" 130A 14.29 7.56 7.40 2.76
8" 145A 18.76 8.58 8.39 3.15

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