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FLOW CONTROLS

FLANGE UNIONS

Flange Unions offer a convenient method for connecting pipe and

installing shut-off valves with identical groove patterns.

Applications

Flange Unions are a practical alternative to weld or screw end connections.

Where shut-off valves are used in conjunction with the flanges the valves

may be replaced without performing any cutting operations. NPT and

Socket Weld Flanges are suitable for use with ammonia, HCFC and HFC

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

corrosive to steel and Garlock #2930. Lead gaskets are also available for

two bolt NPT and Socket Weld Flanges for cholorine service.

ODS Flanges are suitable for use with HCFC and HFC refrigerants and their

associated oils, as well as other industrial fluids non-corrosive to steel,

copper and Garlock #2930.

Main Features

Ÿ

Two bolt flange design, connection sizes ½” to 1” nominal

Ÿ

Four bolt flange design, connection sizes 1” to 4” nominal

Ÿ

Connection types available: NPT, Socket Weld and ODS

Ÿ

All flanges with the same nominal connection size and number of bolts

are interchangeable

Ÿ

All flange dimensions of the same type and nominal size are identical to

those used on Henry Valve flanged handwheels and seal cap valves

Technical Specifications

NPT and Socket Weld Series

Maximum working pressure sizes 1/2” to 2” = 1500 PSI (103.4 Bar)

Maximum working pressure sizes 2-1/2” to 4” = 500 PSI (34.5 Bar)

Allowable operating temperature = -20°F to +275°F (-29°C to +135°C)

ODS Series

Maximum working pressure = 500 PSI (34.5 Bar)

Allowable operating temperature = -20°F to +275°F (-29°C to +135°C)

Materials of Construction

NPT and Socket Weld Series

The flange body is made from ASTM A105 forged steel. The bolts are made

from SAE Grade 5 steel. The gasket is made from Garlock #2930.

ODS Series

The flange body is made from ASTM A105 forged steel. The connections are

made from solid copper. The gasket is made from Garlock #2930.

OVAL TYPE WITH FEMALE PIPE THREAD & SOCKET WELD DESIGN

Part No

Conn Size

(inch)

Dimensions (inch)

Weight (lbs)

NPT

Socket Weld

NPT

Socket Weld

A

B

C

D

E

F

G

O2PT-1X1/2 O2SW-1X1/2 1/2

2.19 0.38 1.66 2.09 2.13 1.63 3.13

3.75

3.75

O2PT-1X3/4 O2SW-1X3/4 3/4

2.19 0.51 1.66 2.09 2.13 1.63 3.13

4.00

4.00

O2PT-1

O2SW-1

1

2.19 0.51 1.66 2.09 2.13 1.63 3.13

3.50

3.50

Additional Information

1. For single flanges only, add the suffix letter “F” (female) or “M” (male) to

the flanges union catalog number.

2. Hardware kits are available separately; includes nuts, cap screws, and

gasket.

3. Flanges for installation onto Henry valves up to 4” nominal should order

the flanged union catalog number. The appropriate number of additional

bolts and nuts are provided with all flanged valves.

4. Flange kits include two gaskets.

5. Flanges designated for chlorine service order lead gaskets, available only

on 2-bolt designs. Lead Gasket part number is 5-023-097.

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