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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 1002
Threaded Ends
Red Nut/Blue Subs
Size Item Unit Weight A B C TPI Material
NPS Dn lbs kg in mm in mm in mm Nuts Subs
1 25
Union Complete 3.62 1.64
3.620 91.95 1.750 44.45 4.500 114.30 6STD
All Alloy
Steel
Forging
Nut 2.02 0.92
Male Sub 0.70 0.32
Female Sub w/Ring 0.90 0.41
Seat Ring – –
11⁄2 40
Union Complete 9.54 4.33
4.600 116.84 2.570 65.28 5.520 140.21 4STD
Nut 4.98 2.26
Male Sub 1.98 0.90
Female Sub w/Ring 2.58 1.17
Seat Ring – –
2 50
Union Complete 13.00 5.90
5.200 132.08 3.000 76.20 7.375 187.33 3MOD
Nut 7.35 3.33
Male Sub 2.65 1.20
Female Sub w/Ring 3.00 1.36
Seat Ring – –
3 80
Union Complete 22.40 10.16
6.200 157.48 4.240 107.70 9.320 236.73 4STD
Nut 10.70 4.85
Male Sub 5.28 2.39
Female Sub w/Ring 6.42 2.91
Seat Ring – –
4 100
Union Complete 33.82 15.34
8.280 210.31 5.250 133.35 10.700 271.78 4STD
Nut 14.70 6.67
Male Sub 8.60 3.90
Female Sub w/Ring 10.52 4.77
Seat Ring – –
Alloy steel forgings in high-pressure manifold and treating iron connections. Field-replaceable seal ring protects the metal-to-metal seal.
Available in threaded and butt weld ends. Unions are used primarily by service companies on applications of cementing, fracturing, and acidizing.
Wing Unions
10,000 psi cwp – 15,000 psi test