Reducing Adapter, Socket x FPT PVC Schedule 40 1" x 1/2" (435-130)

This 1" x 1/2" Schedule 40 PVC Reducing Female Adapter (Slip x FPT) combines a socket-to-thread material transition and a one-step 1" to 1/2" size reduction into a single compact fitting body — accepting a 1" PVC pipe at the slip socket inlet for a permanent solvent-cement bond and providing a 1/2" female NPT-threaded outlet for receiving a 1/2" male-threaded valve, solenoid valve inlet, equipment port, or service component. Constructed in white Schedule 40 PVC, it eliminates the need for a full-size 1" female adapter plus a separate 1" x 1/2" threaded reducer bushing or hex bushing at the same assembly location, reducing fitting count, joint count, and assembly footprint wherever a 1" socket pipe run must simultaneously transition to a threaded connection and step down to a 1/2" male-threaded downstream component.

The 1" slip socket inlet accepts 1" PVC pipe for a permanent solvent-cement bond, anchoring the fitting to the upstream 1" socket distribution assembly. The 1/2" FPT outlet accepts any standard 1/2" male NPT-threaded fitting, solenoid valve inlet, nipple, equipment port, pump connection, or service component for a pressure-tight mechanical connection when made up with thread sealant or PTFE tape. This reducing Slip x FPT configuration is the correct choice when three conditions must be met simultaneously at the same assembly point: a 1" socket pipe run upstream, a thread transition required at the pipe run termination, and a 1/2" male-threaded downstream component at that location. It should not be confused with the full-size 1" female adapter (435-010 if stocked), which maintains 1" on both ends without size reduction; with any reducing male adapter at the same run size (436 series reducing variants confirmed in this session), which provides a male-threaded outlet rather than a female-threaded outlet; or with the 438-131 (1" x 3/4" Spigot x FPT Bushing, confirmed in this session), which cements into a socket fitting hub interior rather than accepting a pipe end in a socket. At 1", the 1/2" FPT outlet is the most common small-bore threaded component connection size in residential and light commercial irrigation and plumbing systems — making 435-130 the standard reducing female adapter for terminating a 1" socket pipe run at a 1/2" solenoid valve inlet, drip manifold component, filter housing connection, or small-bore equipment port where both the transition to a threaded interface and the step-down to 1/2" must occur at the same pipe run end location.

Rated to approximately 450 psi at 73°F (governed by the 1" slip end), this adapter is suited for standard commercial and light industrial water distribution and irrigation service within its pressure class. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to both the pipe end and fitting socket per ASTM D2564 procedures, inserting fully and maintaining a quarter-turn during assembly. On the 1/2" FPT end, use a quality pipe thread sealant or PTFE tape on the male NPT threads of the mating downstream component before engagement. Avoid over-torquing — PVC threads require hand-tight plus one to two turns. Allow adequate cure time on the cemented joint before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Terminates 1" PVC socket mainline, sub-main, and lateral pipe runs at 1/2" male-threaded solenoid valve inlets, drip manifold component connections, filter housing male-threaded ports, and small-bore dedicated service connections in residential, light commercial, and agricultural irrigation systems where the 1" socket pipe run must simultaneously transition to a threaded interface and step down to the standard 1/2" service connection size at the pipe run end in a single compact fitting
• Drip & Micro-Irrigation Systems — Provides the standard single-fitting termination point for a 1" socket supply pipe run at a 1/2" male-threaded drip manifold inlet, pressure regulator connection, filter housing port, or zone valve body in drip and micro-irrigation systems where both the socket-to-thread transition and the 1" to 1/2" size reduction must occur at the same pipe run termination point
• Commercial Plumbing — Terminates 1" socket PVC distribution pipe runs at 1/2" male-threaded fixture supply valves, equipment feed connections, and dedicated small-bore service components in commercial building water distribution systems where a reducing female adapter replaces a full-size adapter plus a separate threaded reducer at the same pipe end location
• Industrial Process Piping — Transitions 1" socket process water distribution pipe runs to 1/2" male-threaded pump inlets, instrument connections, valve bodies, and small-bore equipment ports in water treatment, chemical processing, and manufacturing facilities where a simultaneous size reduction and socket-to-thread material transition at the pipe run end minimizes fitting count at the 1" to 1/2" threaded equipment interface
• Water Treatment & Aquaculture — Used at 1" socket pipe run termination points where 1/2" male-threaded pump inlets, filter housing connections, and treatment equipment ports must receive the socket run with a simultaneous size reduction and NSF/ANSI 61 compliant socket-to-thread transition in a single compact fitting body
• Chemical Handling — Delivers a corrosion-resistant combined socket-to-thread transition and 1" to 1/2" size reduction at pipe run end locations in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, where a 1/2" male-threaded downstream component must receive the 1" socket pipe run at the system boundary without a multi-piece adapter and reducer assembly