Plug, Spigot PVC Schedule 40 3/4" (449-007)

This 3/4" Schedule 40 PVC Spigot Plug provides a permanent, pressure-rated solvent-cement closure for any standard 3/4" socket fitting hub in commercial and light industrial piping systems, cementing directly into the hub of a tee branch outlet, cross port, coupling end, elbow outlet, or valve body socket to seal the port with a bond equal in strength 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 fluid handling applications where a 3/4" socket port must be permanently sealed without threading, capping over a pipe end, or introducing a pipe section before the closure point.

The spigot (male plain end) is sized to insert directly into the hub of any standard 3/4" socket-end fitting and is solvent-cemented in place to form a permanent, leak-free closure at the outer face of the hub — identical in installation method to cementing a standard pipe end into a socket, but terminating the port rather than continuing the pipe run. This closure method is the correct choice when a 3/4" socket fitting hub must be permanently sealed and no future access to the port is anticipated — as opposed to the MPT plug (450-007 confirmed in this catalog session), which threads into a 3/4" female-threaded port and can be removed and reinstalled for future access. The spigot plug should not be confused with the slip cap (447 series, 3/4" if stocked), which sockets over a pipe end exterior rather than inserting into a fitting hub interior — the spigot plug installs into an existing socket hub without requiring a pipe section between the hub and the closure point, making it the most compact permanent closure available for any 3/4" socket fitting port. At 3/4", this is the co-dominant highest-demand size in the 449 series alongside 449-010 (1") — appearing throughout residential and light commercial irrigation grid and fire suppression grid assemblies where spare tee branch outlets, cross ports, and side outlet elbow ports are routinely sealed during phased zone construction or initial system installation; in commercial plumbing socket distribution assemblies where unused 3/4" branch outlets on tees must be permanently closed; and in process water and light industrial socket manifold systems where unused socket ports must be permanently sealed to maintain system pressure integrity. The confirmed Schedule 40 parallel to the 849-007 (3/4" Schedule 80 Spigot Plug), 449-007 is the standard-duty closure at this dominant grid and distribution assembly diameter, appropriate for all standard commercial and light industrial pressure applications within the Schedule 40 pressure class.

Rated to approximately 480 psi at 73°F, this plug 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 spigot exterior and the interior of the receiving socket hub per ASTM D2564 procedures, inserting fully and holding briefly for initial set. Because the spigot plug is a permanent closure, confirm the port is intended for permanent sealing before cementing — the joint cannot be disassembled after cure without cutting into the fitting body; if future access to the port is anticipated, the MPT plug (450-007 confirmed in this session) provides a removable threaded alternative at a female-threaded port. 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 seals unused or spare 3/4" socket branch outlets on tees, crosses, side outlet elbows, manifolds, and valve body socket ports throughout residential and light commercial irrigation grid and distribution assemblies where the sealed port will not be reopened — the co-dominant highest-demand application for this fitting at the most widely specified socket fitting hub size in residential and light commercial all-socket PVC irrigation grid construction
• Fire Suppression Systems — Permanently closes unused 3/4" socket branch outlets, spare cross ports, and dead-end tee branches in light-hazard and residential Schedule 40 PVC fire suppression grid assemblies where unused ports at tee and cross fitting locations must be permanently sealed throughout the all-cemented grid layout during initial system installation or phased expansion
• Commercial Plumbing — Permanently closes unused 3/4" socket branch outlets, spare manifold ports, and dead-end fitting hub connections on pressurized supply systems and distribution assemblies in commercial building water systems where the sealed port requires no future access and a permanent solvent-cement closure maintains all-socket assembly integrity at each unused fitting port
• Industrial Process Piping — Provides a permanent solvent-cement closure at unused branch outlets, spare ports, and dead-end socket fitting hubs on 3/4" process water distribution headers and manifold assemblies in water treatment, chemical processing, and manufacturing facilities where all-cemented system integrity is maintained at every sealed port throughout the all-socket assembly
• Chemical Handling — Delivers a corrosion-resistant permanent socket closure at unused ports on chemical distribution manifolds, pump station socket fitting assemblies, and feed line headers conveying acids, caustics, fertilizer solutions, and other fluids incompatible with threaded metal closures — the solvent-cement bond providing equivalent long-term chemical resistance to the fitting body itself at each sealed 3/4" socket port
• Water Treatment & Aquaculture — Used to permanently seal spare ports on filter manifold socket hubs, pump station socket fitting assemblies, recirculating system manifold ports, and treatment equipment socket connections where NSF/ANSI 61 compliance and long-term chemical resistance are required at all sealed 3/4" socket ports throughout the all-cemented assembly