McAlpine VP4 Ventapipe 25 Air Admittance Valve with 1 1/4″ (32mm–36mm) Multifit Tee

McAlpine VP4 Ventapipe 25 Air Admittance Valve with 1 1/4″ (32mm–36mm) Multifit Tee

Features

The McAlpine VP4 Ventapipe 25 is a genuine McAlpine plumbing component designed to provide efficient ventilation for smaller waste systems. This unit features an integrated 1 1/4″ (32mm) multifit tee, allowing for easy inline installation. The multifit fittings on both sides accommodate pipe diameters ranging from 32mm to 36mm, providing excellent installation flexibility. With an air flow capacity of 2 l/s, this valve effectively prevents vacuum siphoning in your drainage system, ensuring reliable performance in a clean white finish.

• Genuine Quality: An authentic McAlpine plumbing component.
• Flexible Installation: Features multifit compression fittings on both sides, accommodating pipe diameters from 32mm to 36mm.
• Integrated Tee: Designed with a 1 1/4″ (32mm) multifit tee for convenient inline mounting.
• Effective Ventilation: Provides an air flow capacity of 2 l/s to maintain drainage system balance.

Technical

• Brand: McAlpine
• Model/MPN: VP4
• Fitting Type: 1 1/4″ (32mm) Multifit Tee
• Pipe Compatibility: 32mm to 36mm diameter (both sides)
• Air Flow Capacity: 2 l/s
• Colour: White

Details

Small-bore waste systems are highly susceptible to vacuum-induced siphoning, where the water trap is pulled dry, leading to unpleasant odors entering the room. Finding a compact, integrated solution that can be easily spliced into an existing 32mm–36mm pipe run without excessive plumbing modifications is often difficult.

The McAlpine VP4 solves this by combining the air admittance valve and the tee into a single, compact unit. Because the multifit connections handle the standard pipe range, you can install the valve quickly and securely. This all-in-one approach saves space under basins and sinks while ensuring your drainage remains sealed and odor-free.