Catawissa 4 in. Fig 300 Steel Hammer Union

The Catawissa Fig 300 4 in. Hammer Union is engineered for high-pressure applications including oil, gas, water, and steam service. Constructed from heavy-duty forged steel, it delivers superior strength, impact resistance, and long-term reliability in demanding industrial and oilfield environments. Precision-machined metal-to-metal sealing surfaces ensure a secure, leak-free connection. Rated for 3,000 PSI working pressure and 4,500 PSI test pressure, this union features 4 in. NPT female threaded ends for quick, safe, and efficient installation.