Elbow, Street 90 Degree, MPT x Slip PVC Schedule 40 1-1/4" (410-012)

This 1-1/4" Schedule 40 PVC 90 Degree Street Elbow (MPT x Slip) combines a compact male-threaded inlet right-angle turn with a socket outlet in a single fitting body — threading directly into any standard 1-1/4" female-threaded port on the inlet side and providing a 1-1/4" slip socket on the outlet side for a permanent solvent-cement bond to the downstream PVC pipe run. Constructed in white Schedule 40 PVC, it eliminates both the intermediate nipple required between a standard FPT x FPT elbow and the threaded port and the separate thread-to-socket adapter that would otherwise be needed to transition from the threaded assembly into the socket pipe run — producing the most compact possible right-angle thread-to-socket transition at any 1-1/4" female-threaded port in an assembly.

The 1-1/4" MPT inlet threads directly into any standard 1-1/4" FPT or FIP female-threaded fitting, valve body, manifold port, tee branch outlet, pump connection, or equipment female-threaded port, providing the male-threaded engagement that enters a female port without requiring an upstream nipple. The 1-1/4" slip socket outlet accepts 1-1/4" PVC pipe for a permanent solvent-cement bond on the downstream direction-change leg, redirecting the pipe run 90 degrees from the female-threaded port and transitioning simultaneously from a threaded assembly into an all-socket PVC pipe run. This MPT x Slip mixed-connection configuration is the correct choice when a right-angle direction change and a threaded-to-socket material transition must occur simultaneously at the same female-threaded port location — as opposed to the 412-012 (MPT x FPT, all-threaded), which keeps both ends threaded rather than transitioning to a socket pipe run at the outlet, or the 409-012 (Spigot x Slip, all-socket), which cements into a socket fitting hub rather than threading into a female port. The 410-012 is the functional inverse of the confirmed 411-012 (Spigot x FPT) — where 411-012 transitions from a socket assembly into a threaded component at a right-angle turn, the 410-012 transitions from a threaded assembly into a socket pipe run; together these two fittings address both directions of the socket-to-thread 90-degree mixed-connection transition at the 1-1/4" diameter. With all four confirmed 1-1/4" street elbow connection-type configurations now documented in this catalog session (409-012, 410-012, 411-012, 412-012), the 410-012 occupies the specific position of thread-inlet-to-socket-outlet — correct wherever a 1-1/4" female-threaded pump discharge, valve outlet, filter housing, or manifold FPT port must immediately transition into an all-socket PVC pipe run at a compact 90-degree turn.

Rated to approximately 370 psi at 73°F, this elbow is suited for standard commercial and light industrial pressure service. Its dual ASTM construction — D2464 at the MPT end and D2466 at the slip socket end — confirms compliance across both connection methods. NSF/ANSI 61 listing confirms suitability for potable water contact.

Install using a quality pipe thread sealant or PTFE tape on the 1-1/4" MPT threads before engagement into the receiving female port. Avoid over-torquing — PVC threads require hand-tight plus one to two turns; excessive force can crack the fitting body. Plan the slip socket outlet direction before fully making up the MPT threads — the downstream socket outlet direction is established when the threads are fully engaged. Apply solvent cement to both the 1-1/4" pipe end exterior and the fitting's slip socket interior per ASTM D2564 procedures after the MPT joint is made up, inserting the pipe fully and maintaining a quarter-turn during assembly. 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 — Transitions directly off 1-1/4" female-threaded pump discharge ports, valve body FPT outlets, filter housing connections, and manifold female-threaded branch ports into 1-1/4" socket PVC pipe runs at a compact 90-degree right angle in agricultural and municipal irrigation systems where the downstream assembly is all-socket PVC and a simultaneous direction change and thread-to-socket transition at the female port eliminates a nipple-plus-adapter assembly at pump station and valve station connection points
• Commercial Plumbing — Provides a compact right-angle thread-to-socket transition at female-threaded valve body outlets, tee branch FPT ports, manifold connections, and equipment female-threaded ports in commercial building water distribution systems where the downstream PVC pipe run is all-socket and the direction change must occur immediately at the female-threaded port without an intermediate nipple or socket adapter
• Industrial Process Piping — Transitions 1-1/4" female-threaded ports on pump bodies, valve assemblies, equipment outlets, and distribution manifolds into 1-1/4" socket PVC pipe runs at a compact 90-degree right angle in water treatment, chemical processing, and manufacturing facilities where the all-socket downstream assembly must receive the outlet of a threaded component at a right-angle turn in the most compact possible transition
• Chemical Handling — Provides a corrosion-resistant compact 90-degree thread-to-socket transition at female-threaded ports in systems where a 1-1/4" FPT pump outlet, valve body, or manifold port must immediately transition into an all-socket PVC distribution assembly at a right-angle turn without a multi-piece nipple-plus-adapter approach that would add joint count and leak risk at the critical threaded-to-socket material transition point
• Water Treatment & Aquaculture — Used at pump discharge FPT connections, filter housing female-threaded outlets, and treatment equipment female-threaded ports where the downstream 1-1/4" socket PVC pipe run must originate at a 90-degree right angle directly off the female-threaded port with NSF/ANSI 61 compliance required throughout the transition assembly
• HVAC & Mechanical Systems — Transitions 1-1/4" female-threaded pump discharge ports, valve body FPT outlets, and equipment connections directly into 1-1/4" socket PVC pipe runs at a compact 90-degree right angle on cooling tower supply assemblies, chilled water distribution systems, and chemically treated water system piping within the Schedule 40 pressure class