Bushing, Spigot x FPT (Flush Style) PVC Schedule 80 2" x 1-1/2" (838-251)

The 838-251 is a Schedule 80 PVC flush style bushing with a 2-inch spigot (plain end) inlet and a 1-1/2-inch female pipe thread (FPT) outlet. The spigot end solvent cements directly into any standard 2" Schedule 40 or Schedule 80 PVC socket fitting, while the FPT bore accepts a 1-1/2" male-threaded fitting, valve, pump port, union tail, or adapter downstream. As a flush style bushing, the fitting body sits fully recessed within the receiving socket without protruding hex flats or an exposed shoulder — producing a clean, low-profile assembly at the transition point well suited to congested equipment assemblies, manifold headers, and confined mechanical spaces where clearance at the socket face is limited.

The 838-251 is the largest-outlet and highest-flow-capacity variant in the standard 2" spigot inlet sub-series of the 838 matrix, completing the full range alongside the 838-247 (1/2"), 838-248 (3/4"), 838-249 (1"), and 838-250 (1-1/4"). At 2" inlet to 1-1/2" outlet, the size reduction is the most modest of the five — a near-full-bore transition that minimizes flow restriction and pressure drop through the fitting while maintaining the flush profile that keeps the assembly recessed within the 2" socket face. This configuration is the appropriate choice when the downstream 1-1/2" threaded connection must carry near-full flow from the 2" system — primary equipment inlets, large-bore pump ports, high-flow isolation valve bodies, and substantial secondary mains where a 1-1/2" male-threaded interface is the terminal connection and a low-profile flush assembly is specified over a hex bushing at the socket face.

The flush style installation approach differs from hex bushing assembly — the smooth body without wrench flats is seated by hand or with strap tooling rather than an open-end wrench, and the solvent cement joint on the spigot end provides the primary, permanent pressure-rated connection at the inlet. Apply a medium-bodied PVC primer and standard-bodied PVC cement per ASTM D2564 to the 2" spigot end and the receiving socket interior before installation. Apply PTFE thread tape or an approved pipe thread sealant to any male-threaded fitting before engaging the 1-1/2" FPT outlet. Do not overtighten the threaded connection, as PVC threads can crack under excessive torque.

Manufactured from heavy-wall Schedule 80 PVC, the 838-251 delivers greater wall thickness and mechanical strength than Schedule 40 equivalents, making it appropriate for industrial, chemical, and elevated-pressure service environments. The dark gray color is standard for Schedule 80 PVC and provides immediate visual identification in mixed-schedule installations.

Specifications:

Industries & Applications:

• Industrial Process Piping — Reduces a 2" Schedule 80 PVC socket to a 1-1/2" female threaded port in a flush, low-profile assembly for high-flow valve inlets, primary pump connections, and substantial secondary circuit feeds in corrosion-resistant industrial fluid handling systems where near-full-bore flow capacity and flush fitting clearance are both required at the socket face.
• Chemical Processing & Water Treatment — Used at pump discharge sockets, filter housing ports, and chemical system headers where a 2" cemented Schedule 80 socket must transition to a 1-1/2" threaded interface for large-bore isolation valves, high-flow metering equipment inlets, or primary secondary distribution feeds within tight equipment assemblies or manifold headers.
• Municipal & Commercial Plumbing — Provides a flush spigot-to-threaded transition at 2" Schedule 80 socket fittings in commercial plumbing systems where a 1-1/2" threaded connection — for large-bore isolation valves, unions, or high-flow equipment tie-ins — must be introduced at a socket face without the protruding profile of a hex bushing.
• Irrigation & Agricultural Systems — Installed at pump discharge sockets, filter manifold ports, and control valve assemblies where a 2" Schedule 80 socket must accept a 1-1/2" threaded connection for high-flow zone supply mains, primary distribution circuit feeds, or large-bore pressure regulator inlets in flush-clearance system layouts.
• Pool & Spa Equipment Rooms — Transitions 2" Schedule 80 socket connections to 1-1/2" threaded ports for high-flow pump inlet and outlet connections, primary equipment manifold tie-ins, and large-bore valve inlets in permanent equipment room installations where a clean, recessed fitting profile at the socket face is preferred over a protruding hex bushing.
• Laboratory & Semiconductor Facilities — Provides a flush-profile solvent-to-threaded transition at 2" Schedule 80 socket fittings in ultrapure water, acid waste, or reagent distribution systems where 1-1/2" threaded primary distribution feeds or high-flow equipment connections must be accommodated within confined instrument rack or bench assemblies.