Flange Unions0 pages

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

are interchangeable

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

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)

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.

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.

OVAL TYPE WITH FEMALE PIPE THREAD & SOCKET WELD DESIGN
Part No
Dimensions (inch)
Conn Size
(inch)
NPT
Socket Weld
D
E
F
A
C
B
O2PT-1X1/2
2.09
2.13
1.63
1/2
0.38
1.66
O2SW-1X1/2
2.19
O2PT-1X3/4
O2SW-1X3/4
2.19
0.51
2.09
2.13
1.63
1.66
3/4
O2PT-1
O2SW-1
1
2.19
0.51
1.66
2.09
2.13
1.63

G
3.13
3.13
3.13

Weight (lbs)
NPT
Socket Weld
3.75
3.75
4.00
4.00
3.50
3.50

FLOW CONTROLS

ODS Series
Maximum working pressure = 500 PSI (34.5 Bar)
Allowable operating temperature = -20°F to +275°F (-29°C to +135°C)

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