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catawissa
Malleable Iron
Cast Iron
Small Steel
Fittings
Pipe Nipples &Pipe Couplings
Forged Steel
Fittings & Unions
Anvilets
Catawissa
J.B. Smith Products
Carton Information
Warnings: 1. Do not mix Standard Service and Sour Gas Service Unions or parts.
2. Do not make up or break out Unions in pressurized lines.
3. Always use good safety practices, including use of safety glasses, when making up or breaking out Unions.
▲ Weld ends – Consult Factory. † Steel Forging Subs available – Consult Factory. TPI = Threads per inch. DI = Ductile Iron. SF = Steel Forging. BS = Bar Stock. ST = Steel Tubing.
Figure 206
Threaded Ends
Blue Nut/Gray Subs
with Seal Ring
Size Item Unit Weight A B C+ D TPI Material
NPS Dn lbs kg in mm in mm in mm Nuts Subs
1 25
Union Complete 1.75 0.79
2.670 67.82 1.640 41.66 4.065 103.25 ▲ 6
STD DI SF
Nut 0.95 0.43
Male w/O-Ring 0.40 0.18
Female Sub 0.40 0.18
O-Ring – –
11⁄4 32
Union Complete 2.25 1.02
2.730 69.34 1.935 49.15 4.635 117.73 ▲ 6
STD DI SF
Nut 1.20 0.54
Male w/O-Ring 0.50 0.23
Female Sub 0.55 0.25
O-Ring – –
11⁄2 40
Union Complete 2.75 1.25
2.770 70.36 2.250 57.15 4.750 120.65 ▲ 6
STD DI SF
Nut 1.30 0.59
Male w/O-Ring 0.70 0.32
Female Sub 0.75 0.34
O-Ring – –
† 2 50
Union Complete 4.75 2.15
3.275 83.19 2.825 71.76 5.900 149.86 ▲ 4
STD DI Di
Nut 2.20 1.00
Male w/O-Ring 1.15 0.52
Female Sub 1.40 0.63
O-Ring – –
21⁄2 65
Union Complete 10.70 4.85
4.250 107.95 3.400 86.36 7.900 200.66 ▲ 4
STD DI SF
Nut 6.40 2.90
Male w/O-Ring 2.00 0.91
Female Sub 2.30 1.04
O-Ring – –
3 80
Union Complete 13.00 5.90
4.660 118.36 4.170 105.92 8.100 205.74 ▲ 4
STD DI SF
Nut 6.00 2.72
Male w/O-Ring 3.35 1.52
Female Sub 3.50 1.59
O-Ring – –
4 100
Union Complete 18.70 8.48
4.910 124.71 5.075 128.91 9.060 230.12 ▲ 3
MOD DI SF
Nut 7.40 3.36
Male w/O-Ring 5.30 2.40
Female Sub 6.00 2.72
O-Ring – –
6 150
Union Complete 46.10 20.91
6.610 167.89 7.410 188.21 12.800 325.12 ▲ 3
STD DI SF
Nut 18.18 8.24
Male w/O-Ring 12.74 5.78
Female Sub 15.18 6.88
O-Ring – –
O-Ring in male sub for improved sealing. Available in threaded and butt weld ends.
Wing Unions
2,000 psi cwp – 3,000 psi test