Bushing, Spigot x FPT (Flush Style) PVC Schedule 80 2-1/2" x 3/4" (838-288)

The 838-288 is a 2-1/2" x 3/4" PVC Schedule 80 flush style bushing with a 2-1/2" spigot (male plain end) inlet and a 3/4" female pipe thread (FPT) outlet, designed to reduce a 2-1/2" socket fitting or pipe hub down to a 3/4" female-threaded connection point in a single compact fitting. The 2-1/2" spigot inlet inserts directly into any standard 2-1/2" Schedule 80 socket fitting or pipe hub and is joined with solvent cement and primer per ASTM D2564 for a permanent, pressure-rated connection at the inlet, while the 3/4" FPT outlet accepts any standard 3/4" NPT male-threaded pipe, fitting, valve, gauge, or instrument — no solvent welding required at the threaded outlet end.

Manufactured from rigid, dark gray PVC compound conforming to ASTM D1784 cell classification requirements, the Schedule 80 wall construction delivers higher pressure ratings and greater mechanical strength than Schedule 40 equivalents at the same pipe size. This makes the 838-288 the correct choice for high-pressure chemical lines, industrial process piping, and any Schedule 80 system where a reducing transition must maintain full Schedule 80 pressure integrity throughout while preserving serviceability at the outlet connection point. PTFE thread tape or appropriate thread sealant should be applied to the male threads of any fitting assembled into the FPT outlet to ensure a leak-resistant seal at the threaded interface.

The spigot x FPT hybrid end configuration is the defining characteristic of the 838-288 and distinguishes it from both the all-solvent-weld 837-288 (spigot x slip) and the all-threaded 839-series (MPT x FPT) flush bushings. The permanent solvent-welded spigot inlet anchors the bushing into the 2-1/2" socket fitting as a fixed system element, while the 3/4" FPT outlet provides a threaded takeoff that remains fully serviceable — valves, gauges, instruments, chemical injection fittings, and other 3/4" male-threaded components can be removed, replaced, and reconfigured at the outlet without disturbing the upstream solvent-welded socket assembly. This hybrid permanence-at-inlet, serviceability-at-outlet configuration makes the 838-288 particularly well suited for systems where the 2-1/2" socket assembly is a permanent, fixed distribution element but the 3/4" downstream connection point serves components with established replacement and maintenance cycles. The flush style body sits within the receiving socket with a low external profile and no protruding shoulder beyond the face of the receiving fitting — minimizing the fitting envelope in compact valve manifolds, instrumentation panels, and equipment assemblies where fitting profile must be controlled.

Specifications:

Industries & Applications:

• Industrial Process Piping — Permanent solvent-welded reduction into a 2-1/2" socket assembly with a serviceable 3/4" threaded outlet for gauges, chemical injection fittings, instrument connections, and low-volume service taps in high-pressure Schedule 80 chemical distribution and process fluid systems
• Chemical Processing — Hybrid permanent-inlet, serviceable-outlet reductions in corrosive service piping where the 2-1/2" socket assembly is a fixed system element and the 3/4" FPT outlet connects to chemical dosing equipment, sampling instruments, or injection fittings that require periodic removal or replacement
• Municipal Water & Wastewater — Reducing 2-1/2" socket connections to serviceable 3/4" threaded instrument ports, pressure gauge taps, and low-volume service branches at pump stations and treatment facility assemblies where the outlet connection must remain accessible for maintenance and instrument replacement
• Irrigation & Agriculture — Permanent socket reductions to 3/4" threaded outlets for serviceable zone valve connections, pressure gauge ports, chemical injection taps, and instrument fittings in high-pressure Schedule 80 irrigation mainline assemblies and manifold systems
• HVAC & Mechanical — Solvent-welded reduction into a 2-1/2" socket fitting with a serviceable 3/4" threaded outlet for gauge connections, balancing valve taps, and instrument ports in Schedule 80 chilled water and condenser water systems in commercial mechanical room installations
• Water Treatment & Filtration — Permanent socket-to-serviceable-thread reductions at filter vessel manifolds, pump assemblies, and chemical dosing equipment connections where the 3/4" FPT outlet must accommodate removable instruments, sampling ports, and chemical injection fittings in potable water and industrial water treatment systems