Coupling, Slip x Slip PVC Schedule 80 1-1/2" (829-015)

This 1-1/2" Schedule 80 PVC Coupling provides a permanent, pressure-rated inline joint between two sections of 1-1/2" PVC pipe in solvent-cemented Schedule 80 pressure piping systems. Both slip socket ends accept standard 1-1/2" PVC pipe for solvent cement joining, producing a continuous, straight-run connection that maintains full system pressure rating through the joint.

The coupling is the foundational joining fitting in any PVC piping system, serving three core functions: extending a pipe run by joining two pipe lengths end to end, connecting pipe to other fittings at either socket end, and providing a repair joint when a damaged section of pipe must be cut out and replaced. At 1-1/2", this coupling is a high-frequency component in commercial and industrial Schedule 80 systems where straight-run continuity, pipe extensions, and field repairs are routine requirements across the life of the installation.

In Schedule 80 systems, maintaining schedule consistency through repair and extension work is important — substituting a Schedule 40 coupling in a Schedule 80 line introduces a pressure rating discontinuity at the joint. The 829-015 preserves the full Schedule 80 pressure rating at the coupling position, ensuring the repair or extension point is not the weakest component in the assembly.

Manufactured in dark gray Schedule 80 PVC, this coupling delivers the increased wall thickness and mechanical strength required in industrial, chemical, and commercial pressure piping where Schedule 40 ratings are insufficient. PVC's broad chemical resistance covers acids, bases, salts, chlorine, and most common process fluids, providing long service life in corrosive environments where metal couplings would degrade, corrode, or introduce contamination into the fluid stream. NSF/ANSI 61 listing confirms suitability for potable water contact.

Rated to 630 psi at 73°F, this coupling handles standard to elevated pressure service across a wide range of fluid handling applications. For solvent cement installation, clean and dry both pipe ends and socket interiors before application. Apply purple PVC primer to all mating surfaces, then apply a uniform coat of Schedule 80 PVC solvent cement to both the pipe end and socket interior before joining. Insert the pipe with a slight quarter-turn twist and hold firmly for 30 seconds to prevent pushback. Stagger the two joints where possible and allow full cure time per the cement manufacturer's temperature and humidity guidelines before pressurizing. Apply published pressure derating factors for service temperatures above 73°F.

Specifications:

Industries & Applications:

• Industrial Process Piping — Joins 1-1/2" Schedule 80 PVC pipe sections end to end on process headers, chemical distribution lines, pump discharge runs, and equipment supply piping in chemical processing, water treatment, and manufacturing facilities; provides schedule-consistent repair joints when pipe sections are damaged or replaced
• Commercial Plumbing — Extends and repairs 1-1/2" Schedule 80 PVC runs in mechanical rooms, utility chases, and building water distribution systems at branch supply lines, fixture mains, and equipment connections requiring Schedule 80 pressure performance
• Water & Wastewater Treatment — Maintains inline pipe continuity on 1-1/2" Schedule 80 PVC process headers at filter vessel connections, chemical dosing lines, pump suction and discharge runs, and sampling manifolds in municipal and industrial water treatment facilities
• Chemical Handling — Provides a corrosion-resistant, schedule-consistent joining point on chemical feed lines, reagent distribution headers, and tank recirculation loops in systems conveying acids, caustics, fertilizer solutions, and other aggressive fluids where metal couplings would degrade
• Irrigation & Agricultural Systems — Joins and repairs 1-1/2" Schedule 80 PVC pressure mains in high-pressure commercial irrigation systems, greenhouse supply lines, and agricultural water distribution networks where Schedule 80 pressure ratings are required at mainline joints
• HVAC & Mechanical Systems — Used in PVC cooling tower makeup lines, chilled water drain headers, glycol distribution systems, and treated water piping where a schedule-consistent 1-1/2" slip coupling maintains full pressure rating through the joint in Schedule 80 mechanical system piping