Bushing, Spigot x Slip (Flush Style) PVC Schedule 80 1" x 1/2" (837-130)

This 1" x 1/2" Schedule 80 PVC Bushing (Spigot x Slip) provides a compact, all solvent-cement transition from a 1" socket-end fitting hub down to a 1/2" PVC pipe run in industrial, chemical, and commercial PVC piping systems requiring Schedule 80 pressure ratings. Constructed in dark gray Schedule 80 PVC, it delivers the elevated wall thickness and pressure capacity required in demanding installations where standard Schedule 40 fittings are insufficient and where a 1" socket assembly must reduce to a 1/2" socket-based pipe run without introducing any threaded interfaces at the transition point.

The 1" spigot (male plain end) is sized to insert directly into the hub of any standard 1" socket-end fitting — tee, cross, coupling, elbow, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint at the outer face. The 1/2" slip socket interior accepts a 1/2" PVC pipe for a permanent solvent-cement bond on the reduced-diameter outlet side, completing the transition in a single compact body. This Spigot x Slip configuration is the all-solvent-cement approach to socket reducing at this size combination, and is the correct choice when both the upstream 1" assembly and the downstream 1/2" run are entirely socket-based Schedule 80 PVC systems with no threaded interfaces required at the transition point. It should not be confused with the 838-130 (Spigot x FPT, same size), which provides a 1/2" female-threaded outlet for connecting to male NPT-threaded components, or with the 839 series MPT x FPT Flush Bushing, which is installed entirely within threaded assemblies. The 1" to 1/2" step-down is a meaningful 2:1 reduction most commonly encountered at Schedule 80 tee or cross branch outlets serving 1/2" dedicated socket pipe runs, instrument supply lines, chemical injection feeds, and small-bore distribution branches that tap off a 1" Schedule 80 mainline socket assembly in a single all-cemented fitting transition where maintaining the all-socket integrity of the system is a design priority.

Rated to approximately 630 psi at 73°F (governed by the 1" spigot end), this bushing is well-suited for demanding pressure service across a broad range of industrial, chemical, and commercial fluid handling applications. Its Schedule 80 PVC composition provides excellent resistance to acids, bases, salts, and chlorinated water, making it a durable long-term alternative to metal reducing bushings in corrosive environments. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to the spigot exterior and the interior of the receiving 1" socket hub per ASTM D2564 procedures, inserting fully and holding briefly for initial set. Apply solvent cement separately to the 1/2" pipe end exterior and the fitting's slip socket interior before inserting the pipe fully and maintaining a quarter-turn during assembly for even cement distribution. Complete each cemented joint in sequence and allow adequate cure time before pressurizing the system. Derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Industrial Process Piping — Provides an all solvent-cement 1"-to-1/2" socket transition at instrument supply branches, chemical feed distribution step-downs, and dedicated small-bore service connections off 1" Schedule 80 tees, crosses, and manifold assemblies in chemical processing, water treatment, and manufacturing facilities where maintaining all-socket Schedule 80 construction throughout the assembly is a system design requirement
• Chemical Handling — Delivers a corrosion-resistant, all solvent-cement socket reduction in Schedule 80 systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, particularly where a 1/2" socket pipe run must branch off a 1" Schedule 80 socket assembly without introducing a threaded interface at the transition — preserving the all-cemented integrity of the chemical distribution or dosing system
• Commercial Plumbing — Reduces 1" socket-end Schedule 80 tee branches and fitting ports to 1/2" Schedule 80 pipe runs at small-diameter service connections, pressure gauge feed lines, and branch distribution points in high-pressure or exposed commercial building water supply systems where all-socket Schedule 80 construction is specified or preferred throughout
• Irrigation & Water Distribution — Transitions 1" Schedule 80 socket fitting ports to 1/2" PVC pipe runs at dedicated zone lateral branches, instrument supply connections, and small-bore distribution points in high-pressure agricultural and municipal irrigation systems where Schedule 80 socket construction is maintained throughout and no threaded interface is required at the 1"-to-1/2" reduction point
• Water Treatment & Aquaculture — Used at filter manifold branch outlets, recirculating system header step-downs, and chemical dosing distribution transitions where a 1" Schedule 80 socket fitting must supply a 1/2" PVC pipe run to a treatment component, dosing point, or instrument branch requiring NSF/ANSI 61 compliance and an all-cemented Schedule 80 assembly is specified throughout
• HVAC & Mechanical Systems — Transitions 1" socket-end Schedule 80 fitting ports to 1/2" PVC pipe runs at small-bore service branch connections, instrument supply lines, and chemical feed distribution step-downs on cooling tower supply headers, chilled water distribution mains, and chemically treated water systems within the Schedule 80 pressure class