Cap, Slip PVC Schedule 40 1-1/2" (447-015)

This 1-1/2" Schedule 40 PVC Slip Cap provides a permanent, pressure-rated solvent-cement closure for any standard 1-1/2" PVC pipe end, terminating the pipe run with a full-strength cemented bond equivalent in integrity to a standard pipe-to-fitting joint. Constructed in white Schedule 40 PVC, it offers the corrosion resistance and chemical compatibility required across a wide range of commercial plumbing, irrigation, and light industrial applications where a 1-1/2" socket pipe end must be permanently sealed without threading, plugging a fitting hub, or introducing additional intermediate fittings at the termination point.

The slip socket interior is sized to accept the exterior of any standard 1-1/2" PVC pipe end and is solvent-cemented in place to form a permanent, leak-free closure — identical in installation method and joint strength to cementing a pipe end into any other Schedule 40 socket fitting. This closure method is the correct choice when a 1-1/2" pipe end must be permanently sealed and no future access to the port is anticipated — as opposed to the FPT cap (448-015 confirmed in this catalog session), which threads over a male NPT pipe end and can be removed and reinstalled for future access, or the MPT plug (450 series, 1-1/2" if stocked), which threads into a female-threaded port and also offers removability. The slip cap should not be confused with the spigot plug (449 series, 1-1/2" if stocked), which inserts into and cements into the interior of a socket fitting hub rather than socketing over a pipe end exterior — the slip cap is the correct choice when terminating a pipe end directly, while the spigot plug is correct when closing a spare socket port on an existing fitting body. At 1-1/2", this cap most commonly terminates dead-end 1-1/2" mainline runs in irrigation distribution assemblies, closes spare branch socket outlets on 1-1/2" tees and crosses during initial system construction, seals the ends of 1-1/2" socket pipe runs during pressure testing, and permanently terminates 1-1/2" socket distribution headers at phased installation boundaries. The 1-1/2" solvent-cement bond provides a reliable, permanent seal that will not loosen over time due to pressure cycling, thermal expansion, or soil movement — an advantage over threaded closures at intermediate pipe diameters where all-socket assembly integrity is a design priority.

Rated to approximately 330 psi at 73°F, this cap is suited for standard commercial and light industrial water distribution and irrigation service within its pressure class. Its PVC composition provides excellent resistance to corrosion, scale, chlorinated water, and a broad range of chemical exposures. 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, using a primer appropriate for the pipe and fitting schedule. Insert the pipe end fully into the socket and maintain a quarter-turn during assembly for even cement distribution. Because the slip cap is a permanent closure, confirm the pipe end is intended for permanent sealing before cementing — the joint cannot be disassembled after cure without cutting into the pipe; if future access is anticipated, the FPT cap (448-015 confirmed) or MPT plug (450-015 if stocked) provides a removable threaded alternative at a male-threaded or female-threaded port at the same location. Allow adequate cure time before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Permanently terminates dead-end 1-1/2" mainline and sub-main pipe runs, closes spare branch socket outlets on tees and crosses during phased zone installation, and seals distribution header pipe ends at system boundary points in agricultural and municipal irrigation systems where the sealed pipe end requires no future access and a permanent solvent-cement closure maintains all-socket system integrity at the termination point
• Commercial Plumbing — Permanently closes 1-1/2" socket PVC pipe ends at dead-end branch terminations, distribution header boundaries, and system test point caps on pressurized supply systems in commercial building water distribution systems where the sealed pipe end requires permanent closure and all-socket construction is maintained throughout the assembly
• Pump Station Assemblies — Seals spare or unused 1-1/2" socket pipe ends on pump station discharge headers, bypass line terminations, and valve cluster pipe stubs in pump station installations where dead-end pipe run boundaries must be permanently closed while maintaining the full pressure rating of the all-socket assembly at the termination point
• Industrial Process Piping — Provides a permanent solvent-cement closure at dead-end 1-1/2" socket process water distribution pipe runs, header terminations, and system boundary pipe ends in water treatment, chemical processing, and manufacturing facilities where all-cemented system integrity is maintained at every permanently sealed pipe end throughout the distribution layout
• Chemical Handling — Delivers a corrosion-resistant permanent socket closure at 1-1/2" pipe end termination points in chemical distribution assemblies, pump station socket piping, and feed line headers conveying acids, caustics, fertilizer solutions, and other fluids incompatible with threaded metal closures — the solvent-cement bond provides equivalent long-term chemical resistance to the fitting body itself at each permanently sealed 1-1/2" pipe end
• Water Treatment & Aquaculture — Used to permanently seal dead-end 1-1/2" socket pipe runs, spare outlet pipe stubs, and distribution header pipe terminations in filter manifold assemblies, pump station socket piping, and treatment system distribution layouts where NSF/ANSI 61 compliance and long-term chemical resistance are required throughout the all-cemented assembly