The Catawissa Fig 100 4 in. Hammer Union is designed for low-pressure air, water, oil, and gas service. Constructed from high-strength forged steel, it delivers exceptional durability and reliability in demanding field and industrial environments. Featuring precision-machined metal-to-metal sealing surfaces, this union ensures a secure, leak-free connection even under rigorous operating conditions. Rated for 1,000 PSI working pressure and 1,500 PSI test pressure, it includes 4 in. NPT female threaded ends for easy installation and maintenance.








