Male Adapter, MPT x Slip PVC Schedule 80 4" (836-040)

The 4" PVC Schedule 80 Male Adapter (MPT x Slip) provides a clean, pressure-rated transition between a solvent-welded Schedule 80 PVC pipe run and a 4" male NPT threaded connection. The slip socket end bonds permanently to 4" Schedule 80 PVC pipe via solvent cement, while the 4" MPT end threads directly into any standard FPT fitting, valve body, equipment port, or tank connection — creating a reliable bridge between the solvent-weld and threaded worlds in a single, compact fitting.

Male adapters are among the most fundamental transition fittings in a PVC piping system, and at 4" they most commonly appear at large-format equipment interfaces — pump flanges, strainer housings, valve inlets, tank bulkheads, and filter vessel ports — where a permanent solvent-welded supply line terminates at a threaded equipment connection. Pairing this adapter with a union on the equipment side is standard practice in well-designed systems, preserving the ability to disconnect and service equipment without cutting into the permanent pipe run.

Manufactured to ASTM D2464 standards and listed under NSF/ANSI 14, the 836-040 is molded from dark gray Schedule 80 PVC compound, providing the greater wall thickness, elevated pressure ratings, and broad chemical resistance that Schedule 80 specifications demand. At 4", this is a large-format fitting suited for commercial mechanical systems, industrial process piping, and municipal infrastructure rather than typical residential applications.

Specifications:

Industries & Applications:

• Pump Systems & Mechanical Rooms — Terminates a 4" solvent-welded suction or discharge line at the threaded inlet or outlet of a pump body, strainer, or valve; commonly installed in tandem with a union to preserve serviceability at the equipment connection point
• Chemical Processing — Transitions large-diameter solvent-welded chemical supply and transfer lines to threaded equipment ports on reactors, storage tanks, chemical feed systems, and process vessels in corrosive service environments
• Industrial Manufacturing — Applied at the interface between permanent solvent-welded process piping and threaded equipment connections on filters, heat exchangers, and inline instrumentation requiring a 4" Schedule 80-rated threaded termination
• Municipal Water & Wastewater — Used at pump stations, treatment facilities, and distribution system connections where 4" Schedule 80 PVC supply lines terminate at threaded valve bodies, metering equipment, or treatment system inlets
• Commercial Plumbing — Installed in mechanical rooms at large-diameter equipment connections where solvent-welded service piping transitions to threaded valves, backflow preventers, or building entry points specified in Schedule 80
• Irrigation & Agricultural — Applied at pump discharge assemblies, filter manifold inlets, and mainline valve connections where a 4" solvent-welded supply line transitions to a threaded equipment port in large-scale irrigation infrastructure
• Aquaculture & Water Treatment — Connects solvent-welded distribution headers to threaded inlets on filtration vessels, UV systems, and treatment equipment in large recirculating and water treatment system installations