high pressure fittings

High Pressure Screw Union

High pressure fittings include forge fabricated carbon and stainless alloyed fittings, with pipe thread and welding joints, and with pressure to 2.000, 3.000, 6.000 and 9.000 LBs, designed in compliance with ASME B16.11 and MSS-SP.

Screw unions include forged carbon-alloy and stainless steel made Union, sizing NPS 1/8~3in to MSS-SP-83-2001. They are in general made from raw round bar of diameter 19~85mm.

Screw Union

[High Pressure, MSS-SP-83]

screw union
Standard Materials Body — Forged Carbon steel ASTM A105, A350 LF2, A106, A312, A234, A403; and Stainless steel ASTM A182, F304, F304L, F316, F316L, F304H, F316H, F317L, F321, F11, F22, F91
Finishing Treatment Carbon steel — Galvanized or black treated;
Stainless steel — Pickled
General Weight See Table of weight list
Dimensions in Millimeters
high pressure screw union
Norm.
Pipe
Size
Pipe
End
(Min.)
A
Wall
Thick.
(Min.)
C
Water
Way
Bore
D
Male
Flange
Min.
F
Nut
Min.

G
Thrds.
Per
In Max.
H
Bearing
Min.

J
Length
Way
Bore
D
Clear
Assem.
Nut
N
1/8 14.7 2.41 8.43
6.43
3.18 3.18 16 1.24 41.4 50.8
1/4 19.0 3.02 11.43
9.45
3.18 3.18 16 1.24 41.4 50.8
3/8 22.9 3.20 14.27
13.51
3.43 3.43 14 1.37 46.0 55.9
1/2 27.7 3.73 17.86
17.07
3.68 3.68 14 1.50 49.0 58.4
3/4 33.5 3.91 23.01
21.39
4.06 4.06 11 1.68 56.9 66.0
1 41.4 4.55 28.98
27.74
4.57 4.45 11 1.85 62.9 78.7
50.5 4.85 37.69
35.36
5.32 5.21 11 2.13 71.1 94.0
57.2 5.08 43.54
41.20
5.84 5.59 10 2.31 76.5 111.8
2 70.1 5.54 55.58
52.12
6.60 6.35 10 2.69 86.1 132.1
85.3 7.01 66.27
64.31
7.40 7.11 8 3.07 102.4 149.9
3 102.4 7.62 86.25
77.27
8.26 8.00 8 3.53 109.0 175.3