Premium Brass Union with Taper Seat (ASME B16.15 Compliant)
Engineered for commercial, residential, and industrial piping networks, our Premium Brass Unions provide a highly dependable, three-piece connection designed for easy pipeline assembly and disassembly. This specialized fitting features a precision-machined taper seat (ground joint) that creates a tight, metal-to-metal mechanical seal when tightened. This completely eliminates the need for an internal rubber washer or gasket that could degrade, leak, or blow out under extreme thermal stress.
Manufactured from high-grade lead-free brass, this union allows you to cleanly disconnect and service pumps, water heaters, water softeners, and filtration systems without cutting your piping layout. Featuring precision-cut internal National Pipe Taper (NPT) threads on both ends, it ensures an exceptionally tight mechanical wedge fit when paired with standard threaded lines.
Key Features and Benefits
Precision-Machined Taper Seat: Features a matching male-and-female ground joint angle that compresses into a perfect metal-to-metal wedge seal, eliminating weak gasket points and reducing your long-term maintenance costs.
Three-Piece Serviceability Design: Consists of two threaded tailpieces joined by a heavy-duty collar nut. This allows you to disconnect specific sections of your pipeline easily for machine servicing or component replacement.
Lead-Free Brass Construction: Forged from premium lead-free brass, meeting the strict requirements of NSF/ANSI 61 and NSF/ANSI 372 standards for safe, clean domestic drinking water networks.
Precision-Tapered NPT Threads: CNC-machined to strict ASME B1.20.1 standards on both openings. The smooth, deep-cut internal threads allow thread sealants to distribute uniformly, creating a gas-tight and water-tight seal.
Superior Vibration and Expansion Defense: The heavy wall profile and metal-to-metal seating safely absorb structural pipe vibrations, minor system alignments, and heavy thermal expansion cycles without developing bypass leaks.
Technical Specifications
Fitting Profile: Three-Piece Ground Joint Pipe Union / Threaded Taper Seat Union
Material Standard: Lead-Free Cast Brass or Forged Brass (NSF 61 and NSF 372 Certified)
Dimensional Standard: ASME B16.15 Class 125 / Class 250 Brass Threaded Fittings
Thread Specification: ANSI / ASME B1.20.1 National Pipe Taper Threads (Female NPT x Female NPT)
Maximum Temperature Rating: 400 degrees Fahrenheit (204 degrees Celsius) depending on pressure loads
Fluid Compatibility: Potable water supply, hydronic radiant heating loops, compressed air, oils, and non-corrosive industrial liquids
Ideal Applications
Installing Inline Service Points Next to Water Heaters, Filtration Systems, and Water Softeners
Connecting Commercial Distribution Pumps, Flow Meters, and Control Valves for Easy Maintenance
Fabricating Clean, Dismantlable Mechanical Headers in Industrial Plant Utility Rooms
Transitioning and Joining Threaded Pipelines in High-Vibration Mechanical Environments
