Union NPT Female Threads High Medium and Low Pressure Fig Hammer Union

A Hammer Union is a high-pressure, quick-connect coupling used extensively in the oil & gas, industrial, and mining industries to join sections of pipe, hose, or equipment. It consists of two threaded subs (male and female ends) and a central union nut with protruding 'lugs' (hammer lugs). The lugs allow the nut to be tightened or loosened quickly using a hammer and pin spanner, creating a robust, pressure-tight metal-to-metal seal.

Hammer Unions are critical for high-pressure fluid and gas handling: Oil & Gas Drilling & Well Service (mud lines, cementing lines, fracturing manifolds, kill and choke lines), High-Pressure Pumping (for water, slurry, or chemical injection), Mining & Industrial Process Lines (hydraulic lines, air lines, and slurry transport), and Rig Up/Rig Down (ideal for temporary or frequently reconfigured lines due to their quick-connect/disconnect feature).

We manufacture a comprehensive range per industry standards: Pressure Ratings include 2,000 psi, 3,000 psi, 5,000 psi, 10,000 psi, 15,000 psi, and 20,000 psi Working Pressure (WP), also available in MPa ratings. Size Range (NPT Thread) is from 1 inch up to 4 inches (most common), with special sizes up to 6 inches or larger available upon request.

We use materials suitable for harsh, high-pressure environments: Carbon Steel (AISI 4140/4142 alloy steel, heat-treated, often with black oxide or phosphate coating), Stainless Steel (AISI 316/316L for corrosive services like saltwater and acids), and Special Alloys (Duplex 2205 and Super Duplex for severe chloride and H2S environments available upon request). The primary seal is a precision-machined metal-to-metal seal, with O-ring grooves incorporated for double sealing in certain models.

Samples take 15-20 working days. Standard Products take 25-35 working days. Custom Products take 40-50 working days after final specification approval.