Pipe Fitting Alkotest ZZ50112 threaded male adapter GZ Ø50 x 1½" (PP)

Alkotest ZZ50112 threaded male adapter GZ Ø50 x 1½" (PP) is a polypropylene pipe fitting designed to connect plastic pipelines to threaded components. The adapter has a spigot end sized to accept Ø50 mm plastic pipe and a male G-thread of 1½" for attaching pumps, valves, or metal and plastic fixtures. It is intended for use where polypropylene (PP) piping systems are specified, offering a lightweight and chemically resistant connection for water and drainage applications in residential and light commercial installations.

Advantages

This PP male adapter provides corrosion resistance and low weight compared with metal alternatives, reducing strain on plastic piping runs. Its molded design ensures a consistent thread profile and a reliable mechanical fit with standard G 1½" female threaded fittings. The material properties of polypropylene contribute to chemical resistance against common household liquids and good dimensional stability under normal temperature ranges for plumbing use.

Suitable for

• Joining Ø50 mm polypropylene pipes to female G 1½" threaded fixtures
• Domestic water supply and drainage systems
• Light commercial plumbing where plastic fittings are specified
• Connections to pumps, traps, valves or threaded adaptors

Key specifications

• Material: Polypropylene (PP)
• Pipe connection size: Ø50 mm spigot
• Thread type and size: Male G thread 1½"
• Connection types: Spigot to male threaded
• Typical applications: Water and drainage systems

How to use

Prepare the Ø50 mm PP pipe by cutting squarely and deburring the end. Ensure both mating surfaces are clean and free of debris. Insert the pipe into the spigot end according to the pipe system’s joining method (solvent welding, fusion, or push-fit according to the specific PP system in use). Hand-start the G 1½" female thread onto the male thread and tighten to the required torque using appropriate tools; use a suitable sealant or PTFE tape on the male thread if the threaded connection requires a seal. Follow the installation rules and local plumbing codes for secure, leak-free connections and pressure ratings applicable to the piping system.

Usage recommendations

Do not expose the fitting to temperatures or pressures outside the limits specified for the PP piping system being used. When connecting to metal fittings, ensure compatible thread sealing materials are used and avoid over-tightening to prevent thread damage. Verify chemical compatibility for aggressive fluids before prolonged use.