Bushing, MPT x FPT (Flush Style) PVC Schedule 80 1-1/2" x 1-1/4" (839-212)

This 1-1/2" x 1-1/4" Schedule 80 PVC Flush Bushing offers a low-profile, inline thread reduction from a 1-1/2" female-threaded port down to a 1-1/4" male-threaded connection in pressurized piping systems. The close sizing between the two ends makes this a particularly useful bushing where a minimal reduction is needed — transitioning between adjacent pipe sizes without the abrupt diameter change of a deeper-reducing bushing.

Manufactured in dark gray Schedule 80 PVC, the fitting delivers the increased wall thickness and mechanical strength that industrial, chemical, and commercial plumbing applications demand when Schedule 40 pressure ratings are insufficient. The flush style eliminates the protruding hex shoulder of a standard hex bushing, producing a streamlined, compact assembly that installs cleanly inside an existing female-threaded fitting without adding unnecessary profile to the connection.

Both the 1-1/2" MPT exterior and the 1-1/4" FPT interior conform to NPT tapered thread standards, ensuring a reliable, pressure-tight seal when assembled with PTFE tape or a compatible pipe thread sealant. Rated to 630 psi at 73°F (governed by the 1-1/2" MPT end), this fitting handles demanding service conditions across a broad range of fluid handling systems. PVC's inherent resistance to acids, bases, salts, and chlorinated water makes it an effective long-term alternative to metal bushings in corrosive environments. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply PTFE tape or thread sealant to all threaded joints prior to assembly. Tighten hand-tight plus one to two turns — do not over-torque PVC threads, as excessive force can crack the fitting. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Industrial Process Piping — Provides a minimal one-step thread reduction at pump inlets, valve bodies, equipment nozzles, and instrumentation ports in water treatment, chemical processing, and manufacturing systems
• Commercial Plumbing — Transitions 1-1/2" threaded ports on manifolds, fixtures, and valve assemblies to 1-1/4" branch lines in pressurized domestic and commercial water supply systems
• Irrigation & Water Distribution — Delivers a compact, corrosion-resistant thread reducer in agricultural mainline headers and municipal distribution systems requiring close-tolerance size transitions
• Chemical Handling — Performs reliably in systems conveying acids, caustics, fertilizer solutions, and other aggressive fluids where metal bushings would corrode or contaminate the fluid stream
• Aquaculture & Water Features — Used at filter housings, recirculating pump connections, and header manifolds where a low-profile bushing conserves space in tight mechanical assemblies
• HVAC & Mechanical Systems — Reduces threaded connections on cooling towers, chilled water loops, and glycol systems requiring Schedule 80 pressure performance