Coupling, Slip x Slip PVC Schedule 40 1/2" (429-005)

This 1/2" Schedule 40 PVC Coupling (Slip x Slip) provides a straight-through inline connection for two 1/2" PVC pipe ends in all-socket piping systems — the standard fitting for joining, extending, or repairing 1/2" all-cemented PVC pipe runs without introducing directional changes or size reductions into the assembly. Constructed in white Schedule 40 PVC, it is the smallest confirmed entry in the 429 series and the highest-pressure rated — carrying approximately 600 psi at 73°F — completing the most comprehensively documented single-size all-socket fitting family at any nominal size in this catalog session at the dominant drip emitter lateral, micro-irrigation distribution, and small-bore instrument supply diameter.

Both the inlet and outlet are 1/2" slip socket ends, each accepting the exterior of a standard 1/2" PVC pipe end for a permanent solvent-cement bond per ASTM D2564 procedures — creating a continuous, leak-free inline connection at each cemented joint. As the fundamental straight-through connector in all-socket PVC assemblies at this diameter, the slip coupling joins two pipe ends in a continuous inline run — at pipe extension joints where a drip emitter lateral or micro-irrigation sub-header must be lengthened beyond available pipe section lengths, at cut-in repair sections where a damaged intermediate 1/2" pipe segment must be replaced inline, at system boundary transitions where two pre-assembled drip grid pipe sections must be joined at the final connection point, and at distribution assembly joining points where two 1/2" socket pipe run sections must be connected without direction change or size reduction. The slip coupling requires pipe ends on both sides — it should not be confused with the FPT x FPT threaded coupling (430-005 confirmed in this catalog session), which joins two male-threaded components rather than cementing to pipe ends; with the female adapter (435-005 confirmed in this session), which terminates a socket run at a female-threaded outlet for a male-threaded component; with the male adapter (436-005 confirmed in this session), which terminates a socket run at a male-threaded terminal; with the slip cap (447-005 confirmed in this session), which permanently terminates a single pipe end; or with the full-size 429-010 (1" Slip Coupling) at the adjacent larger diameter. At 1/2", this coupling is among the most widely specified inline connectors at this diameter — appearing throughout drip and micro-irrigation lateral extension and repair assemblies, instrument supply distribution runs, chemical injection feed line extensions, and fire suppression grid drop supply pipe joining points where 1/2" is the standard small-bore socket distribution diameter requiring straight-through inline connections at multiple pipe run joining points throughout the all-socket assembly layout.

Rated to approximately 600 psi at 73°F — the highest confirmed pressure rating in the 429 series — this coupling is suited for standard commercial and light industrial water distribution, irrigation, instrument service, and chemical injection applications well within its pressure class. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to both the pipe end exterior and the fitting socket interior per ASTM D2564 procedures at each port, using a primer appropriate for the pipe and fitting schedule. Insert pipe fully into each socket and maintain a quarter-turn during assembly for even cement distribution. Allow adequate cure time before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Drip & Micro-Irrigation Systems — Joins, extends, and repairs 1/2" socket drip emitter supply laterals, micro-irrigation sub-headers, and zone distribution pipe runs at pipe extension joints, cut-in repair sections, and grid assembly boundary connection points in residential and light commercial drip and micro-irrigation systems where all-socket cemented construction is maintained throughout and a straight-through inline connection at the standard 1/2" drip lateral and distribution diameter is required without direction change or size reduction at the joint
• Irrigation & Water Distribution — Provides straight-through inline connections between 1/2" socket lateral distribution pipe run sections at extension joints, repair connections, and distribution assembly boundary points in residential and light commercial irrigation systems where all-socket PVC construction is specified and a continuous inline connection maintains full lateral flow capacity through the coupling body at the standard small-bore zone supply and drip distribution diameter
• Instrument & Process Piping — Connects and extends 1/2" socket instrument supply runs, sample distribution line pipe sections, and chemical feed lateral pipe segments at inline joining points in manufacturing, water treatment, and laboratory facilities where all-cemented Schedule 40 PVC construction requires straight-through inline connections at pipe run extension and repair points throughout the small-bore instrument distribution layout
• Chemical Handling — Provides a corrosion-resistant straight-through inline connection between 1/2" socket pipe run sections in chemical feed distribution assemblies, injection system supply pipe runs, and dosing manifold lateral assemblies conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal couplings — the permanent solvent-cement bond providing equivalent long-term chemical resistance to the fitting body itself at each joined pipe section throughout the all-socket assembly
• Fire Suppression Systems — Connects and extends 1/2" socket sprinkler head supply drops, branch distribution pipe sections, and grid lateral supply run sections at inline joining points in light-hazard and residential Schedule 40 PVC fire suppression assemblies where all-cemented construction is maintained and straight-through pipe joining is required at multiple pipe extension and connection points throughout the 1/2" socket grid
• Water Treatment & Aquaculture — Used at inline straight-through pipe joining points on 1/2" all-socket distribution runs, chemical dosing lateral assemblies, and treatment system small-bore pipe sections where NSF/ANSI 61 compliance and chemical resistance are required at every cemented pipe-to-fitting connection throughout the all-socket small-bore distribution assembly