Reducer Bushing, Spigot x Slip PVC Schedule 40 2" x 1-1/4" (437-250)

This 2" × 1-1/4" Schedule 40 PVC Bushing provides the shallowest available all-solvent-cement size transition in the 437-series 2" inlet sub-run — a two-step reduction from a 2" slip socket position directly to a 1-1/4" PVC pipe run in a fully solvent-welded Schedule 40 system. The 2" spigot end inserts into any standard 2" female slip socket fitting or coupling for solvent cement joining on the upstream side, while the 1-1/4" slip socket on the outlet end accepts standard 1-1/4" PVC pipe for solvent cement joining on the downstream side. Both connections are permanent, chemically fused solvent-cemented joints — no threaded interface is introduced at either end of the fitting.

Within the 437-series 2" inlet sub-run, the 437-250 occupies the shallowest-reduction position across all four standard entries. The 437-247 makes the deepest five-step reduction to a 1/2" outlet for chemical dosing and instrument supply cemented pipe runs. The 437-248 makes a four-step reduction to a 3/4" outlet for secondary supply and zone distribution runs. The 437-249 makes a three-step reduction to a 1" outlet for the broadest primary supply run population. The 437-250 makes the minimal two-step reduction to a 1-1/4" outlet — the adjacent transitional pipe size — serving the narrower but well-defined population of 1-1/4" downstream cemented pipe runs at pump suction and discharge connections, secondary distribution headers, strainer body approach piping, filter vessel inlet connections, and equipment supply runs where the 1-1/4" transitional size bridges the hydraulic gap between 1" and 1-1/2". The four-entry selection guide for the 2" inlet sub-run is now complete: a 1-1/4" downstream pipe run requires the 437-250; a 1" downstream pipe run requires the 437-249; a 3/4" downstream pipe run requires the 437-248; a 1/2" downstream pipe run requires the 437-247.

The 1-1/4" outlet is what defines the 437-250's precise application niche within the sub-run. One-and-one-quarter inch PVC pipe occupies the well-established transitional position between 1" and 1-1/2" in Schedule 40 distribution hierarchies — the same positioning established across the 429-168, 438-212, 401-167, 401-168, and multiple other 1-1/4" catalog entries. It appears at pump suction and discharge approach connections, strainer body inlet piping, filter vessel approach runs, secondary distribution header branches, and equipment supply connections where the 1-1/4" flow capacity is specifically required rather than the full 1-1/2" or the smaller 1" capacity. The 437-250 bridges the 2" primary distribution socket to any of these 1-1/4" cemented downstream applications in a single compact all-cement bushing.

The two-step reduction from 2" to 1-1/4" also produces the smoothest hydraulic transition of all four 2" inlet sub-run entries. The smallest size differential between the 2" inlet and the 1-1/4" outlet — compared to the larger differentials of the 437-249, 437-248, and 437-247 — minimizes the velocity change at the bushing body. This hydraulic advantage is most relevant at pump suction approach socket connections and secondary header transitions where smooth velocity profiles at size reduction points are a practical design consideration alongside the socket-joining function.

The all-cement construction of the 437-250 preserves the monolithic, fully solvent-welded integrity of the Schedule 40 system through the two-step size reduction. When the downstream 1-1/4" connection is a cemented PVC pipe run — as it must be for this fitting to be the correct selection — both the 2" upstream joint and the 1-1/4" downstream joint are permanent, chemically fused connections. If the downstream connection is a 1-1/4" male-threaded component (pump port adapter, strainer body inlet, threaded valve) rather than a cemented pipe run, any 438-series equivalent at 2" × 1-1/4" (if stocked) with a 1-1/4" FPT outlet is the correct selection instead.

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

Rated to 280 psi at 73°F (governed by the 2" spigot end), this bushing handles standard pressure service across irrigation, commercial plumbing, pool and spa, water treatment, and light industrial applications. Two separate solvent-cemented joints must be made at installation — the spigot end into the receiving 2" socket, and the 1-1/4" downstream pipe into the bushing's outlet slip socket. For both joints, clean and dry all mating surfaces before application. Apply purple PVC primer to the spigot exterior and receiving socket interior for the upstream joint; apply primer to the 1-1/4" pipe end and the bushing's outlet socket interior for the downstream joint. At 2", use medium-body PVC solvent cement on the spigot end; standard-body cement is appropriate for the 1-1/4" outlet socket joint. Apply a uniform coat to both mating surfaces at each joint before inserting. Hold each joint with a slight quarter-turn twist for 30 seconds. Make the upstream spigot joint first to seat the bushing securely in the receiving 2" socket before making the downstream pipe joint at the 1-1/4" outlet. Allow full cure time per the cement manufacturer's temperature and humidity guidelines before pressurizing. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Pump Suction & Discharge Approach Piping — The defining application for the 2" × 1-1/4" all-cement bushing: transitions a 2" slip socket position on a pump station outlet tee, manifold fitting, or distribution coupling to a 1-1/4" cemented pump suction approach run or discharge secondary header continuation in residential and commercial pump station assemblies, irrigation pump stations, pool and spa pump connection piping, and mechanical equipment pad layouts where the 1-1/4" cemented pipe approaches the pump suction inlet or secondary discharge connection from a 2" primary socket position — the smoothest hydraulic two-step transition available at the 2" inlet
• Strainer Body & Filter Vessel Approach Piping — Provides a 1-1/4" cemented pipe outlet at a 2" slip socket position for strainer body approach connections, filter vessel inlet piping, and Y-strainer inlet runs in residential and commercial irrigation, pool and spa, commercial plumbing, and water treatment systems where the 1-1/4" cemented pipe approaches the strainer or filter inlet from a 2" primary distribution socket
• Commercial & Residential Irrigation — Secondary Header Transitions — Transitions a 2" Schedule 40 PVC mainline socket position on a tee, cross, or manifold fitting to a 1-1/4" cemented secondary header or transitional distribution run in residential and commercial irrigation systems where the 2" primary mainline must supply a 1-1/4" secondary header that bridges the hydraulic requirement between the 2" primary main and the 1" zone supply tier
• Pool, Spa & Aquaculture — Transitions a 2" slip socket position on recirculation header tees, filter manifold fittings, and equipment distribution crosses to a 1-1/4" cemented equipment approach run or secondary distribution pipe in residential and commercial pool and spa installations where the 1-1/4" transitional pipe serves specific equipment supply or approach connection flow requirements between the 2" primary and the 1" secondary distribution
• Commercial Plumbing — Reduces a 2" slip socket port on a distribution tee, cross, or manifold fitting to a 1-1/4" cemented secondary branch supply run in commercial building water distribution and mechanical room systems where the primary 2" distribution main must supply 1-1/4" secondary headers or transitional-size equipment supply connections at socket branch positions
• Water & Wastewater Treatment — Transitions a 2" slip socket position on process distribution tees, pump manifold fittings, and chemical distribution crosses to a 1-1/4" cemented secondary branch run in light-duty municipal and industrial water treatment facilities where the primary 2" process distribution header must supply 1-1/4" transitional-size secondary branch connections at socket positions
• Light Industrial Process Piping — Provides a two-step all-cement size transition from a 2" slip socket position on process distribution tees, coupling sockets, and manifold fitting branch sockets to a 1-1/4" cemented transitional-size process supply run in light industrial Schedule 40 systems where the primary 2" process distribution header supplies 1-1/4" secondary transitional branches within the fully solvent-welded layout