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www.henrytech.com

FLOW CONTROLS

CHECK VALVES

Straight Through Design

The function of a Check Valve is to allow fluid flow in one direction

only.

Applications

Henry Technologies’ Check Valves

refrigerants and their associated oils, as well as other industrial fluids non-

corrosive to brass, steel, copper, Teflon and synthetic rubber.

A typical application is to install a Check Valve downstream of an Oil

Separator. This prevents condensed liquid refrigerant returning down the

Discharge Line and into the Separator.

The 119 and 120 series Check Valves are not suitable for discharge lines of

reciprocating compressors.

are suitable for use with HCFC and HFC

Main Features

Ÿ

Robust design

Ÿ

Flow direction arrow

Ÿ

Quiet and efficient operation

Ÿ

Minimal opening pressure

Ÿ

Copper extensions on 120 series

Technical Specifications

Maximum working pressure = 500 PSI (34.5 Bar)

Allowable operating temperature = -20°F to +200°F (

Using the standard spring, Henry Technologies’ Check Valves will start to

open at 0.5 PSI and be fully open at 5 PSI pressure differential. Contact

Technical Support at 1(800) 627-5148 for alternative spring options.

Series 119 and 120 Check Valves are USR and CNR recognized by

Underwriters Laboratories, Inc.

-29°C to +93°C)

C/HEX

A

2

1

C/HEX

2

B

A

B

1

FIG 1

FIG 2

Œ

Inlet Flare



Outlet Flare

Œ

Inlet ODS



Outlet ODS

Materials of Construction

The valve body and piston are made from brass. The spring is made from

stainless steel. The seat is made from neoprene. The extensions on the 120

series are made from copper.

Part No

Fig

No

Conn Size (inch)

Dimensions (inch)

Cv

Weight (lbs)

A

B

C/HEX

119-1/4

1

1/4 SAE Flare

2.26

-

13/16

0.44

0.22

119-3/8

1

3/8 SAE Flare

2.51

-

13/16

0.94

0.26

119-1/2

1

1/2 SAE Flare

3.00

-

1-1/4

2.80

0.28

120-3/8

2

3/8 ODS

6.04

0.31

13/16

0.85

0.28

120-1/2

2

1/2 ODS

6.23

0.38

1-1/4

1.99

0.57

120-5/8

2

5/8 ODS

6.41

0.50

1-1/4

3.05

0.64

120-7/8

2

7/8 ODS

7.44

0.75

1-1/2

5.80

1.06

Installation - Notes

1. Valves must be installed in accordance with the flow direction arrow.

2. The valve bodies and valve internals of series 120 valves must be

protected against damage during brazing. Series 120 valves should not

be disassembled for brazing. Full instructions are given in the Product

Instruction Sheet, included with each valve.

3. Discharge Check Valves should be positioned as far from the compressor

as possible.

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