Bushing (Flush Style), Spigot x Slip 3" x 1/2" (9837-333)

The 3" x 1/2" PVC Schedule 80 Flush Style Bushing (Part No. 9837-333) is a pressure-rated, gray-body reducer fitting engineered to transition from a 3" fitting socket down to a 1/2" pipe connection in a single compact component. The spigot (male) end inserts directly into the socket of a 3" fitting — such as a tee, coupling, cross, or valve body — and accepts a solvent-cement joint, while the slip (female socket) end receives a 1/2" pipe with solvent cement on the outlet side.

The flush style profile is the defining characteristic that distinguishes this bushing from a hex bushing in the same size combination. Rather than presenting a protruding hex shoulder that extends beyond the fitting face, the flush bushing presents a smooth, low-profile outer surface that seats cleanly within the receiving fitting's socket without added bulk, mechanical projection, or gripping-surface interference. This geometry is the preferred choice in inline assemblies, congested mechanical spaces, and installations where a clean, tool-free transition is a practical or aesthetic design priority.

At 3" × 1/2", this bushing delivers a five-nominal-size step-down — the most extreme reduction available in the 3" flush bushing series and among the largest run-to-outlet differentials encountered in standard PVC bushing configurations. This degree of reduction is highly application-specific: a 3" fitting socket receiving a 1/2" pipe continuation reflects a deliberate and precise system design decision where the fitting socket serves as the structural anchor point but the actual flow through the branch is intentionally minimal. Common contexts include pressure gauge ports, chemical injection points, bleed valves, sensor supply lines, sampling connections, and instrumentation taps where the 1/2" outlet serves a defined low-flow auxiliary function off a 3" fitting in the main system assembly.

The 3" × 1/2" flush bushing is particularly practical in assemblies where a standard 3" same-size tee or cross is already installed and a low-flow auxiliary port is needed at one of the sockets — the flush bushing converts that socket to a 1/2" connection point without requiring a custom reducing tee or a stacked multi-bushing assembly. This single-component approach keeps the transition compact, eliminates additional joint points, and preserves the clean inline profile that flush style bushings are specified for.

Manufactured from Type I, Grade I PVC compound, this fitting conforms to ASTM D2467 dimensional standards and delivers the increased wall thickness and pressure ratings characteristic of Schedule 80. Compatible with Schedule 80 PVC pipe and solvent cements meeting ASTM D2564.

Specifications:

Industries & Applications:

• Industrial & Chemical Processing — Pressure gauge ports, chemical injection points, bleed connections, and instrumentation supply taps installed via flush bushing into 3" tee, cross, or coupling sockets on chemical-resistant pressure systems
• Municipal Water & Wastewater — Monitoring taps, sampling connections, and small-bore service ports introduced off 3" distribution or collection system fittings where the 1/2" outlet serves a defined low-flow auxiliary function
• Commercial Plumbing — Auxiliary service ports and instrumentation connections on Schedule 80 commercial systems where a 3" fitting socket must be converted to a 1/2" connection point without a custom reducing tee
• Chemical Dosing & Water Treatment — Chemical injection inlets, dosing pump supply taps, and sensor feed connections installed via flush bushing into 3" fitting sockets on treatment system mains where minimal branch flow is required
• Irrigation — Pressure gauge connections, fertilizer injection ports, and controller supply taps introduced off 3" irrigation main fittings where the 1/2" outlet supplies a low-flow auxiliary circuit or instrument
• Mining & Oil Field — Instrumentation ports, sampling connections, and chemical injection taps on 3" corrosive fluid handling systems requiring a compact, single-component socket-to-1/2"-pipe transition
• Aquaculture & Water Treatment — Sensor supply lines, chemical dosing inlets, and bleed connections on 3" recirculating system headers where a 1/2" auxiliary port must be introduced off an existing fitting socket without additional reducing hardware