4' BSPT Male Socket Union Coupler — 304 Stainless Steel Pipe Fitting Connector quality 4' BSPT male socket union coupler manufactured from 304 stainless steel. Designed to join threaded BSPT pipe ends quickly and reliably, this unionstyle connector simplifies assembly, maintenance, and alignment while providing durable, corrosionresistant service. Why you need it Creates a removable, leakresistant connection between two BSPT threaded pipe sections without cutting or welding. Made from 304 stainless steel for strong mechanical performance and good corrosion resistance in generalpurpose applications. The union design allows easy disassembly for inspection, cleaning, or replacement, reducing downtime and maintenance cost. Key benefits Durable construction: 304 stainless steel body resists oxidation and wear in common piping environments. Secure threaded connection: BSPT male threads (tapered) provide a tight mechanical seal when used with appropriate sealing compound or tape. Serviceable union design: Separates easily for access to equipment or pipe runs without disturbing the whole system. Versatile use: Compatible with many plumbing, HVAC, industrial, and marine installations that use BSPT threaded fittings. Key attributes Size: 4' nominal bore (4' BSPT male socket threads). Thread type: BSPT male (British Standard Pipe Taper) — tapered male threads intended to form a pressuretight joint with mating BSPT female threads and sealant. Material: 304 stainless steel (AISI 304) for general corrosion resistance and formability. Function: Union coupler / connector — joins two threaded pipe ends while allowing later separation. Compatibility: Designed for use with pipes and fittings that use 4' BSPT male/female threading standards. Typical applications Industrial fluid lines: Connect pumps, valves, and sections of process piping where periodic disassembly is required for maintenance. Commercial plumbing and HVAC: Reliable union connection in water supply, chilled water, and lines that use BSPT threading. Marine and offshore service: Corrosionresistant connector for piping systems where 304 stainless steel is acceptable for the service environment. Installation notes BSPT is a tapered thread form; use an appropriate thread sealant or PTFE tape rated for your system media and temperature to ensure leaktight joints. Handstart threads and then tighten with proper tools; avoid overtightening which can damage threads or deform the fitting. Verify compatibility with system fluids and operating temperatures; 304 stainless steel has good general resistance but may not be suitable for corrosive chemicals or chloride environments without additional protection. What this connector solves Eliminates the need to cut, weld, or solder when joining or repairing threaded pipe runs. Provides a robust, serviceable joint that speeds maintenance and reduces labor. Offers a dependable stainlesssteel option for systems requiring strength and corrosion resistance in common fluids and air services. Specifications (as per product title) Size: 4' Thread type: BSPT male (tapered) Style: Socket union coupler / connector Material: 304 stainless steel Compatible accessories and complementary parts 4' BSPT female threaded fittings, valves, or pipe nipples Thread sealant compounds or PTFE tape suitable for BSPT tapered threads Gaskets or Orings where applicable for additional sealing in union assemblies If you require specific pressure ratings, dimensional drawings, or chemical compatibility data for a particular application, consult technical specifications or contact a qualified piping engineer to confirm suitability before installation.