Reducer Bushing, Spigot x FPT PVC Schedule 40 1-1/2" x 1-1/4" (438-212)

This 1-1/2" × 1-1/4" Schedule 40 PVC Reducer Bushing provides the shallowest available cement-to-thread size transition in the 438-series 1-1/2" inlet sub-run — a single adjacent-size step from a 1-1/2" slip socket position down to a 1-1/4" female NPT threaded outlet in a single mixed-connection fitting. The 1-1/2" spigot end inserts into any standard 1-1/2" female slip socket fitting or coupling for solvent cement joining on the upstream side, while the 1-1/4" FPT end receives any compatible 1-1/4" male-threaded valve, nipple, pump port adapter, strainer body, filter vessel inlet, or equipment connection on the reduced threaded side. The upstream connection is a permanent, solvent-cemented joint; the downstream connection is a threaded interface made up with PTFE tape and thread sealant.

Within the 438-series 1-1/2" inlet sub-run, the 438-212 occupies the shallowest-reduction position. The 438-209 makes a three-step reduction to a 1/2" FPT outlet for chemical dosing and instrument connections. The 438-210 makes a two-step reduction to a 3/4" FPT outlet for the broad population of 3/4" NPT-ported valves, solenoid valves, and control components. The 438-212 makes the minimal one-step reduction to a 1-1/4" FPT outlet — the adjacent transitional pipe size below 1-1/2" — serving the narrower but well-defined population of 1-1/4" NPT-ported pump ports, strainer bodies, filter vessel connections, and secondary distribution equipment that bridges the gap between 1" and 1-1/2" NPT in commercial and residential systems. Selecting among the three requires only identifying the NPT port size of the downstream component: 1-1/4" MPT inlet calls for the 438-212; 3/4" MPT inlet calls for the 438-210; 1/2" MPT inlet calls for the 438-209.

The 1-1/4" FPT outlet is what defines the 438-212's precise application niche. One-and-one-quarter inch NPT is a transitional port size — less prevalent than 1" or 3/4" as a standard control valve size, but a consistent presence at pump suction and discharge port adapters, strainer body inlets, filter vessel inlet connections, and secondary distribution equipment nozzles in commercial and residential systems where the 1-1/4" flow capacity bridges the requirements between smaller 1" components and larger 1-1/2" equipment. Wherever any of these 1-1/4" NPT-ported components must connect at a 1-1/2" slip socket position in a Schedule 40 system, the 438-212 reduces the socket to the correct 1-1/4" threaded outlet at the fitting face in a single compact bushing.

The one-step reduction geometry also produces the smoothest hydraulic transition of the three 438-series 1-1/2" inlet entries. The minimal size differential between the 1-1/2" spigot inlet and the 1-1/4" FPT outlet minimizes the velocity change at the bushing body — an advantage in pump suction approach socket positions and secondary distribution socket connections where hydraulic continuity through the bushing is a consideration alongside the cement-to-thread transition function.

The cement-to-thread construction of the 438-212 places it precisely within the three-series parallel at 1-1/2" × 1-1/4". A 437-series all-cement equivalent at this size (if stocked) would produce a 1-1/4" slip socket outlet for cementing a 1-1/4" PVC pipe run downstream — the correct selection when the downstream connection is a cemented pipe continuation. A 439-series all-threaded equivalent at this size (if stocked) would thread into a 1-1/2" FPT port upstream rather than cementing into a socket. The 438-212 is correct when the upstream connection is a 1-1/2" slip socket and the downstream connection is a 1-1/4" male-threaded component.

The flush style produces a compact, low-profile assembly at the 1-1/2" socket face — the one-step size differential between the 1-1/2" spigot and the 1-1/4" FPT outlet is the smallest in the sub-run, making this one of the most physically compact bushing bodies at the 1-1/2" inlet. The close sizing between the spigot and the outlet socket means the bushing body presents a particularly streamlined profile at the socket face.

Manufactured in white Schedule 40 PVC, this bushing delivers reliable performance across residential, commercial, and light industrial piping applications. PVC's resistance to acids, bases, salts, chlorine, and common process fluids provides long service life where metal bushings would corrode or seize. NSF/ANSI 61 and NSF/ANSI 14 listings confirm suitability for potable water contact.

Rated to 280 psi at 73°F (governed by the 1-1/2" spigot end), this bushing handles standard pressure service across pool and spa, irrigation, commercial plumbing, water treatment, and light industrial applications. For the spigot end, clean and dry the spigot exterior and receiving socket interior before application. Apply purple PVC primer to both mating surfaces, then apply a uniform coat of Schedule 40 PVC solvent cement to both surfaces before inserting. Hold firmly with a slight quarter-turn twist for 30 seconds and allow full cure time per the cement manufacturer's guidelines before pressurizing. Apply PTFE tape or compatible thread sealant to all male threads engaging the 1-1/4" FPT end before installing downstream components. Hand-tighten plus one to two turns — do not over-torque PVC female threads at the outlet. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Pump Suction & Discharge Socket Connections — The defining application for the 1-1/2" × 1-1/4" cement-to-thread reducer bushing: introduces a 1-1/4" threaded outlet at a 1-1/2" slip socket position on pump station manifold tee branch sockets, coupling sockets, and distribution fitting branch sockets in residential and commercial pump station assemblies, pool and spa pump connection piping, and irrigation pump station layouts where 1-1/4" MPT-ported pump port adapters, suction fittings, and discharge connections must interface with 1-1/2" slip socket positions in the Schedule 40 cemented system — the minimal one-step reduction producing the smoothest hydraulic transition at the pump connection socket position
• Strainer Body & Filter Vessel Inlet Connections — Provides a 1-1/4" threaded outlet at a 1-1/2" slip socket position on distribution tee branch sockets, coupling sockets, and manifold fitting branch sockets in residential and commercial irrigation, pool and spa, and commercial plumbing systems where 1-1/4" MPT-ported strainer body inlets, filter vessel inlet connections, and Y-strainer inlets must interface with 1-1/2" slip socket positions in the Schedule 40 cemented system
• Commercial & Residential Irrigation — Transitions a 1-1/2" slip socket position on a submain tee branch, coupling socket, or manifold fitting to a 1-1/4" threaded outlet for downstream pump port connections, strainer body branches, filter station inlet connections, and secondary header equipment interfaces in residential and commercial irrigation systems where 1-1/4" NPT-ported pump and filtration components must connect at 1-1/2" slip socket positions
• Pool, Spa & Aquaculture — Provides a 1-1/4" FPT threaded outlet at a 1-1/2" slip socket position on recirculation header tee branches, equipment supply coupling sockets, and distribution fitting branch sockets in residential and commercial pool and spa installations where 1-1/4" MPT-ported pump port adapters, filter vessel inlet connections, and secondary equipment nozzles must interface with 1-1/2" Schedule 40 cemented socket positions
• Commercial Plumbing — Transitions a 1-1/2" slip socket position on a distribution tee branch, coupling, or manifold fitting to a 1-1/4" threaded outlet for downstream pump booster connections, strainer body inlets, equipment supply branches, and secondary distribution equipment connections in commercial building water distribution and mechanical room Schedule 40 systems where 1-1/4" NPT-ported components must interface with 1-1/2" slip socket positions
• Water & Wastewater Treatment — Provides a 1-1/4" FPT threaded outlet at 1-1/2" slip socket positions on secondary distribution tee branches, pump manifold coupling sockets, and process header fitting branch sockets in light-duty municipal and industrial water treatment facilities where 1-1/4" MPT-ported pump port connections, strainer inlets, and filter vessel interfaces must connect at 1-1/2" Schedule 40 cemented socket positions
• Light Industrial Process Piping — Transitions 1-1/2" slip socket positions on process distribution tees, coupling sockets, and manifold fitting branch sockets to 1-1/4" FPT threaded outlets for downstream pump port connections, strainer body inlets, and secondary process equipment nozzles in light industrial Schedule 40 PVC systems where 1-1/4" MPT-ported transitional-size process components interface with 1-1/2" slip socket positions in the solvent-welded system layout