Bushing, Spigot x Slip (Flush Style) PVC Schedule 80 1-1/2" x 1-1/4" (837-212)

This 1-1/2" × 1-1/4" Schedule 80 PVC Flush Bushing provides a one-step, all-solvent-cement size reduction from a 1-1/2" slip socket position directly to a 1-1/4" PVC pipe run in a fully solvent-welded Schedule 80 system. 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" 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.

The one-step reduction from 1-1/2" to 1-1/4" is the shallowest available reduction in the 837-series 1-1/2" inlet sub-run, and the 1-1/4" slip socket outlet defines this bushing's application niche within the sub-run. Where the 837-209 makes a three-step reduction to 1/2" for small-bore branch supply and instrument runs, and the 837-210 makes a two-step reduction to 3/4" for moderate-capacity secondary branches, the 837-212 makes the minimal adjacent-size step from 1-1/2" to 1-1/4" — serving installations where the downstream pipe run requires the intermediate transitional capacity of the 1-1/4" pipe size rather than a more dramatic step-down.

The 1-1/4" pipe size occupies a well-defined transitional role in commercial and industrial Schedule 80 systems, as established across the 829-012 and 830-012 entries in this catalog. It appears at secondary distribution headers, pump suction lines, equipment feed connections, and branch mains where 1" is undersized for the flow requirement and 1-1/2" carries more capacity than the branch demands. When a 1-1/2" socket position in a solvent-welded system must step down to feed one of these 1-1/4" transitional-size runs — a pump suction branch, a secondary header feed, an equipment supply connection — the 837-212 accomplishes that single-step, all-cement transition at the socket face in a single compact fitting, with the 1-1/4" downstream pipe cementing directly into the bushing's outlet socket as a continuous part of the solvent-welded system.

Selecting among the three Schedule 80 flush bushing series at the 1-1/2" × 1-1/4" size combination requires identifying both the upstream connection type and the downstream connection requirement. All three share the same 1-1/2" spigot inlet, cementing into the same 1-1/2" slip socket — but the outlet configurations serve fundamentally different downstream needs. The 838-212 (Spigot × FPT, previously written) presents a 1-1/4" female-threaded outlet for connecting a male-threaded valve, pump port, or equipment connection downstream. Any 839-series equivalent at this size would be all-threaded, threading into a female-threaded port rather than cementing into a socket. The 837-212 is the correct selection when the downstream connection is a 1-1/4" PVC pipe run cementing into the system — when the one-step size reduction occurs entirely within the solvent-welded piping envelope without introducing a threaded interface at the transition point.

The shallow one-step reduction of the 837-212 means the size differential between the inlet spigot and outlet socket is the smallest in the sub-run — a fitting geometry that is physically more compact than deeper-reducing variants and produces the smoothest hydraulic transition of the three 1-1/2"-inlet 837-series bushings. In flow-sensitive applications where the gradual size transition from 1-1/2" to 1-1/4" is preferable to a more abrupt step-down, the one-step geometry of the 837-212 is an additional functional advantage beyond the correct-sizing rationale.

The flush style eliminates the protruding hex shoulder of a standard hex bushing, producing a streamlined, low-profile assembly that installs cleanly inside the receiving 1-1/2" slip socket without adding axial bulk at the transition point. The close sizing between the spigot end and the outlet socket means the bushing body is particularly compact relative to deeper-reducing variants — maintaining a minimal profile at the transition point in congested piping layouts.

Manufactured in dark gray Schedule 80 PVC, this bushing delivers the increased wall thickness and mechanical strength required in industrial, chemical, and commercial pressure piping where Schedule 40 ratings are insufficient. PVC's broad chemical resistance covers acids, bases, salts, chlorine, and most common process fluids, providing long service life in corrosive environments where metal bushings would degrade or contaminate the fluid stream. NSF/ANSI 61 listing confirms suitability for potable water contact.

Rated to 630 psi at 73°F (governed by the 1-1/2" spigot end), this fitting handles standard to elevated pressure service across a wide range of fluid handling applications. Two separate solvent-cemented joints must be made at installation — the spigot end into the receiving 1-1/2" 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. Apply a uniform coat of Schedule 80 PVC solvent cement to both mating surfaces at each joint before inserting. Hold each joint with a slight quarter-turn twist for 30 seconds and allow full cure time per the cement manufacturer's temperature and humidity guidelines before pressurizing. Make the upstream spigot joint first to seat the bushing securely in the receiving socket before making the downstream pipe joint at the 1-1/4" outlet. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Pump Suction & Secondary Header Transitions — Provides a one-step all-cement size reduction from a 1-1/2" socket position on a main header, tee, or coupling to a 1-1/4" solvent-welded pump suction run, secondary distribution header, or equipment feed line in fully cemented Schedule 80 PVC systems — the most common application for the 1-1/4" outlet size given its transitional role between 1" and 1-1/2" in commercial and industrial system layouts; the downstream 1-1/4" pipe cements directly into the bushing outlet as a continuous part of the cemented system
• Industrial Process Piping — Reduces a 1-1/2" slip socket position on a process header, tee branch, or coupling to a 1-1/4" solvent-welded secondary run within a fully cemented Schedule 80 PVC system in chemical processing, water treatment, and manufacturing facility piping — the correct bushing wherever the downstream pipe is 1-1/4" PVC cementing into the system and no threaded interface is required at the one-step size transition
• Commercial Plumbing — Steps down a 1-1/2" slip socket position on a tee, manifold, or coupling to a 1-1/4" PVC pipe branch run in solvent-welded Schedule 80 building water distribution, mechanical room, and utility system piping where both the upstream socket and downstream 1-1/4" pipe run are cement-joined components within a fully solvent-welded system requiring the transitional pipe size at the branch position
• Water & Wastewater Treatment — Provides a one-step all-cement size transition from a 1-1/2" socket position to a 1-1/4" pipe run on process headers, secondary distribution assemblies, pump suction branch connections, and equipment feed piping in municipal and industrial water treatment facilities where the fully solvent-welded construction is maintained through the single-step size reduction
• Chemical Handling — Delivers a corrosion-resistant, all-cement one-step size reduction from a 1-1/2" socket position to a 1-1/4" cemented pipe run on chemical feed headers, reagent distribution secondary branches, and tank recirculation loop supply connections in systems handling acids, caustics, and aggressive process fluids where the fully solvent-welded construction eliminates potential leak paths at the size transition point
• Irrigation & Agricultural Systems — Reduces a 1-1/2" socket position on a tee or coupling to a 1-1/4" cemented pipe sub-main or secondary header in solvent-welded Schedule 80 commercial irrigation, greenhouse, and agricultural water supply systems where the one-step size transition serves a 1-1/4" distribution run that requires the intermediate capacity between 1" laterals and the 1-1/2" main
• HVAC & Mechanical Systems — Installed at one-step size reduction points on Schedule 80 PVC cooling tower makeup lines, treated water distribution assemblies, glycol system secondary branches, and chilled water drain piping where a 1-1/2" socket position must transition to a 1-1/4" cemented pipe run within a fully solvent-welded mechanical system requiring Schedule 80 pressure performance through the minimal size reduction fitting