figure 1003 hammer union

FIGURE 1003 HAMMER UNION - Threaded



Nominal pipe Size: 2", 3", 4", 5"
Pressure Rating:
     2" to 3" 10,000 psi cwp; 15,000 psi test
     4" to 5" 7,500 psi cwp; 12,000 psi test
Connections Type: pipeline thread, tubing thread, butt-weld
Component Parts: Nut, Male Sub, Female Sub, Seal Ring

Sour Service Models to NACE MR-01-75

Recommended service
For high-pressure connections where lines can't be aligned

Hammer Union (Series 1003 - Threaded) Features
Ball seat provides positive seal with up to 7-1/2" misalignment
2" model up to 4''
Replacement O-ring on male sub provides primary seal, and protects metal-to-metal seal against abrasion and corrosion
Available with threaded or butt-weld ends.


We offer a full line of union swivel connections to fit a variety of applications. Hammer unions come in N.P.T. threaded-style and welded-style and are made of heavy duty steel in sch 40 sch 80 & xxh for tough and long lasting use. Hammer unions can also be treated for use with sour gas H2S service upon request.

Hammer unions are color coded to specific pressure ratings for example a figure 1502 is red and blue nut and is rated for 15,000 psi where as a figure 100 is yellow with black nut and rated for 1,000 psi. Please see below chart for complete pressure rating and color codes for each high presure hammer union availible.