Bushing, Spigot x Slip (Flush Style) PVC Schedule 80 3" x 3/4" (837-334)

The 837-334 is a 3" x 3/4" Schedule 80 PVC Flush Style Bushing with a Spigot x Slip configuration. This fitting reduces pipe size across a significant four-to-one diameter ratio — the spigot (male) end is sized to the OD of 3" PVC pipe, inserting directly into any standard 3" slip socket fitting, valve, or equipment port, while the slip (female) socket on the opposite end accepts 3/4" PVC pipe for solvent cementing. Both ends are solvent-weld connections, making the complete assembly a fully cemented, permanent, pressure-rated reduction with no threads required.

The "flush style" designation means the shoulder of this bushing sits completely flush within the face of the receiving fitting socket — unlike a hex bushing, which presents a raised hexagonal collar that protrudes beyond the socket face. The flush profile produces a cleaner, more compact assembly preferred in close-coupled equipment connections, tight valve box installations, and applications where a protruding hex shoulder would conflict with adjacent fittings, flanges, or clearance constraints within the installation envelope.

The spigot x slip configuration is designed to nest inside an existing 3" fitting rather than bridging two pipe ends. The spigot inserts directly into a 3" tee, cross, coupling, valve, or other slip-socket fitting body — effectively converting that 3" port to a 3/4" slip socket in place — without requiring the larger fitting to be replaced, an additional coupling introduced into the line, or a separate downstream adapter added to achieve the reduction. This makes the flush bushing the most spatially efficient reducing solution when a 3"-ported fitting is already installed or specified and a 3/4" cemented pipe continuation or branch connection is required at that port.

The 3" to 3/4" size reduction is the second-largest step available in the 3" spigot tier of the 837 series — one increment above the most extreme 3" x 1/2" version (837-333). At a four-to-one diameter ratio, the 837-334 shares the functional role of its sibling: it is a point-connection bushing rather than a flow-transitioning fitting. It is engineered for situations where a 3"-ported fitting must be adapted to accept a 3/4" PVC pipe branch, service spur, bypass line, or sub-circuit connection, with the full size transition accomplished entirely within the existing fitting socket footprint. The 3/4" outlet carries more flow capacity than the 1/2" version while remaining firmly in the service-branch rather than full-distribution-branch tier of the fitting's application range.

The 837-334 is a direct sibling to the 837-333 (3" x 1/2") in the 3" spigot tier of the flush bushing series — same spigot size, same fitting type, same schedule, one outlet size increment larger. Buyers working through the 3" spigot tier should confirm the outlet size carefully before ordering, as adjacent part numbers in this series differ by a single digit and the correct SKU is determined entirely by the downstream pipe size required. The 3" spigot and 3/4" slip socket are visually distinct at this size pairing — clearly different in diameter during installation — which reduces incorrect pipe insertion risk, though a deliberate size confirmation before primer application is always prudent on any reducing bushing assembly.

Because the 3/4" outlet is a cemented slip socket rather than a threaded port, the 837-334 is the correct specification when the downstream connection continues as a 3/4" PVC pipe run. If the downstream connection terminates at a threaded fitting, valve, gauge, or instrument with a male pipe thread, a spigot x FPT bushing with a 3/4" threaded outlet eliminates a downstream slip-to-threaded adapter. The all-slip 837-334 is optimized for permanent pipe-to-pipe reductions within fully cemented systems where the 3/4" branch or continuation extends as PVC pipe downstream of the bushing.

Schedule 80 wall thickness ensures the fitting meets the pressure and chemical resistance demands of industrial and commercial service environments, and the dark gray rigid PVC compound provides broad resistance to acids, bases, and industrial chemicals throughout the service life of the assembly.

Specifications:

⚠️ Note: In a reducing fitting, the smaller end governs the pressure rating. The 3" spigot and 3/4" slip socket are visually distinct — confirm correct pipe size orientation before cementing. Confirm 837-334 (3/4" outlet) vs. 837-333 (1/2" outlet) before ordering — adjacent part numbers in the 3" spigot tier differ by a single digit. Ensure the spigot is fully seated to depth in the receiving 3" socket before cementing and hold firmly through the set period. If the downstream connection requires a threaded rather than cemented outlet, specify a spigot x FPT bushing instead. Consult manufacturer derating tables for elevated-temperature service.

Industries & Applications:

• Chemical Processing — Converts a 3"-ported valve, tee, or manifold body to a 3/4" slip branch outlet for a small-diameter chemical bypass spur, recirculation return, or secondary feed line continuing as cemented PVC pipe, accomplishing the full size transition within the existing fitting footprint in corrosive-service piping where minimizing joint count and eliminating threaded connections at the reduction point is a design priority
• Water & Wastewater Treatment — Used at 3" fitting ports on treatment plant distribution headers and process piping where a 3/4" PVC pipe branch must be introduced for a drain connection, low-flow sub-circuit, or minor recirculation spur that continues as a cemented pipe run downstream of the bushing without requiring replacement of the larger fitting or addition of external reducing components
• Industrial Process Piping — Inserts into 3" valve or fitting sockets on process skid assemblies and plant piping where a permanent 3/4" PVC pipe branch, bypass spur, or secondary circuit origination must be achieved within the socket depth of the receiving fitting, concentrating the full size transition within the fitting body rather than in an external reducer downstream
• Pump Station & Equipment Connections — Installed in 3" discharge or suction fitting sockets where a 3/4" PVC pipe run must connect to a port that is otherwise oversized for the downstream pipe size, with the flush bushing providing the size transition within the valve or fitting body in the most compact configuration available
• Irrigation & Agricultural Systems — Adapts a 3"-ported tee or cross on a supply main manifold to accept a 3/4" PVC drip zone lateral, fertilizer injection line, or minor service spur continuing as cemented pipe, particularly in valve box assemblies where the flush shoulder profile maintains enclosure clearances that a hex bushing collar would compromise
• Municipal & Utility Infrastructure — Applied in valve vaults, metering stations, and confined piping assemblies on municipal water systems where a 3" fitting port must be adapted to a 3/4" PVC pipe service branch within a spatially constrained installation envelope that precludes the use of external reducer components downstream of the port