White Nut White Subs
For cementing, fracturing, acidizing, testing and choke-and-kill lines where extreme pressures are encountered to
20,000 psi NSCWP*
Hammer unions are available in a wide range of sizes and in working pressures to 20,000 psi. Pressure seal, non-pressure seal, and welded styles are offered in various sizes and pressures. All SPM hammer unions provide pressure-tight, positive sealing and are available for standard service and sour gas models. SPM hammer unions for sour gas service are specially heat-treated for controlled hardness and utilize fluorocarbon elastomer seal rings.