Modern salt offers a comprehensive range of standard and sour gas hammer unions. Each union is thoroughly inspected to ensure long, dependable service in the most extreme conditions. Available in stock at our distribution center in omanthree lug nuts and self-locking acme threads provide quick make-up and break-outcolor coded for quick identificationunique identification for sour gas unionsmeet or exceed national association of corrosion engineers standard nace mr-01-75 and api rp-14emanufactured from quality steel meeting astm andor aisi standardsall unions provide pressure-tight & positive sealing for low-pressure services (500 to 2, 000 psi)the spherical surface male sub and angular surface female sub form a metal-to-metal seal, the ball and tangent provides a perfect sealrange from 12 to 12 with cold working pressures from 500 to 20, 000 psifully interchangeable with most major brands of hammer unions