HAMMER UNION FIG. 400

HAMMER UNION FIG. 400

Fig 400. Black Nut – Red Subs

These unions are rigid in design and have all the three parts made of steel forgings. These unions are best suited for manifold and line connections. Unions from 3 inch through 8 inch sizes have O-rings for primary sealing. From 5” to 12” sizes, C.W.P. is 2,500 PSI.

Size (inch) A B C ACME (TPI) Union Weight
inch mm inch mm inch mm lbsf kgf
1 1.75 44.5 2.28 58.0 3.54 90.0 3STD 3.0 1.35
2 3.06 76.8 3.44 87.5 5.24 133 3STD 11.00 5.00
2 1 /2 3.54 90 4.17 106 6.18 157 3STD 16.3 7.40
3 4.19 106.6 4.29 109 6.18 157 3STD 19.40 8.80
4 5.23 133 4.74 120.5 8.25 209.7 3STD 28 12.70
5 6.26 159 5.63 143 10.47 266 3STD 48.5 22.0
5 1 /2 6.29 160 5.78 147 10.43 265 3STD 48.0 21.80
6 7.75 197 6.52 165.6 11.02 280 3STD 75.0 34.0
7 7.75 198 6.62 168 11.03 280 3STD 61 27.70
8 9.59 243.5 7.71 196 11.42 290 3STD 94.13 42.70
10 11.75 298.4 9.60 244 11.29 287 3STD 121.2 55.0
12 13.98 355 10.62 270 11.02 280 3STD 158.7 72.0