The Catawissa Fig 1502 3 in. Hammer Union Buttweld is engineered for extreme high-pressure applications including oilfield, gas, steam, and water service. Constructed from heavy-duty forged steel, it delivers outstanding strength, impact resistance, and long-term durability in demanding industrial environments. The buttweld ends provide a permanent, high-integrity welded connection, while precision metal-to-metal sealing surfaces ensure a secure, leak-free joint. Rated for 30,000 PSI working pressure and 45,000 PSI test pressure, this union supports safe, reliable performance in critical high-pressure systems.