Description
Westlake Pipe & Fittings 435005 0.5″ SKT x FPT Female Adapter
The Westlake Pipe & Fittings 435005 0.5″ SKT x FPT is a compact but critically important component in PVC piping systems. Engineered for reliability, durability and long service life, this fitting is manufactured from rigid polyvinyl chloride (PVC) that meets Schedule 40 standards — the widely accepted wall thickness classification for general-purpose pressure piping. PVC Schedule 40 remains a staple material in plumbing and fluid handling because it combines low cost, ease of installation, and excellent resistance to corrosive elements that might degrade metal alternatives.
At its core, this adapter serves as a transition element between two different connection styles: a socket (SKT) or slip end on one side and a female pipe thread (FPT) on the other. The slip end is designed to receive a plain end of standard ½-inch PVC pipe. When solvent cement and primer are applied properly, this slip end creates a permanent, watertight bond that becomes part of the piping system itself. In contrast, the FPT end contains precisely cut internal threads that accept a ½-inch male threaded fitting, such as a valve, gauge, pump port, or other threaded PVC/metal component. This dual-connection design makes it possible to bridge solvent-welded piping with threaded hardware without the need for multiple additional connectors, streamlining both installation and future maintenance work.
One of the most valued attributes of the 435005 adapter is its material performance. PVC itself is inherently resistant to corrosion, rust, and many chemicals — traits that make it ideal for indoor and outdoor liquid systems exposed to various environmental stresses. Unlike metal fittings, PVC will not oxidize or weaken due to water exposure, saline environments, or most acids and alkalis encountered in standard plumbing, irrigation, or light industrial applications. The inherent chemical stability of PVC means that fittings like the 435005 can function reliably in harsh environments without frequent replacement or repair.
In typical installations, this adapter is used in cold-water, low-pressure systems. It is suitable for potable water distribution, irrigation networks, landscaping water feeds, pool and spa plumbing, and general drainage or fluid conveyance systems. However, because PVC is not designed for high-temperature applications or compressed air service, it is generally not recommended for hot water plumbing, steam systems, or pressurized pneumatic systems. The maximum service temperature for PVC Schedule 40 products — including this adapter — typically falls around 140 °F (60 °C); operating above this range can compromise material strength and seal integrity.
The installation process is straightforward for professionals and DIY installers alike. The slip end is first prepared by cleaning the pipe and the adapter socket. A primer is applied to both surfaces, followed by solvent cement. Once mated, the fitting cures in place to form a rigid, permanent joint. The threaded end accepts a male threaded component, which should be sealed with an appropriate thread-sealant tape or compound to ensure a leak-free connection. Since threaded connections can be disassembled, this part of the assembly allows future access for inspections, replacements, or retrofit upgrades without cutting the pipe itself. This adaptability makes the 435005 a smart choice where serviceability is likely to be needed.
Westlake Pipe & Fittings — the manufacturer — has an extensive reputation in the industry as part of Westlake Corporation, one of the leading providers of PVC piping systems in North America. Their products are engineered to meet or exceed relevant ASTM standards for strength, dimensional accuracy, and long-term performance. With a broad range of compatible fittings, adapters, and valves available, the 435005 easily integrates into larger systems designed for residential, commercial, agricultural, or municipal applications.
Westlake Pipe & Fittings is dedicated to helping contractors maximize efficiency and helping engineers design systems that entire communities can rely on.With manufacturing & distribution centers across North America, dedicated sales, technical services, specification engineers and customer support teams, our unparalleled service allows you to design, specify and install complete projects with confidence.
Westlake Pipe & Fittings 435005 0.5″ SKT x FPT Female Adapter Features:
- Socket (SKT) for solvent weld + Female Pipe Thread (FPT) for threaded connections
- Suitable for irrigation, plumbing, pool/spa systems, and general fluid transport
- Easier to handle than metal fittings while maintaining mechanical reliability
- Fits standard Schedule 40/STD PVC pipe and components
- PVC resists rust, scaling, and many aggressive media
- Threaded portion allows for disassembly/maintenance
- Provides industry-standard strength and consistency
- Permanent and watertight when solvent cemented
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