Siphon McAlpine HC22 5/4" white pipe-style sink/basin trap

McAlpine HC22 5/4" white pipe-style sink/basin trap is a straight pipe-style siphon engineered for domestic sinks and basins. The trap provides an effective water seal to prevent sewer gas from entering indoor spaces while allowing efficient drainage. Finished in white, the unit is intended for standard 5/4" (1¼") waste connections and is suitable where a compact, straight-line trap is preferred over bottle or P-trap designs.

Advantages

The siphon features a simple pipe-style configuration that facilitates easy installation and cleaning. Its white finish blends with common sink and basin designs, and the straight-through layout reduces the likelihood of blockages compared with more convoluted trap shapes. The unit is made to fit standard domestic 5/4" connections, offering compatibility with most kitchen and bathroom wastes and allowing direct replacement or new installations without the need for special adaptors.

Suitable for

• Domestic kitchen sinks requiring a straight pipe-style trap
• Bathroom basins with standard 5/4" waste connections
• Replacement of existing straight-through siphons
• Installations where low profile or compact trap geometry is needed

Key specifications

• Connection size: 5/4" (1¼") standard waste
• Type: straight pipe-style siphon (trap)
• Colour/finish: white
• Application: sink and basin drainage in domestic settings
• Maintenance: removable for access and cleaning

How to use

Fit the McAlpine HC22 trap to the sink or basin waste outlet ensuring the 5/4" connections are fully engaged and sealed according to the sink and pipework manufacturer instructions. Tighten any compression fittings or securing nuts by hand, then give a further controlled turn with a spanner if required to achieve a leak-free connection. After installation, run water to confirm proper flow and check all joints for leaks. If access to the trap interior is necessary, detach the removable section for cleaning and reassemble securely before reuse.

Usage recommendations

For reliable performance, use with compatible 5/4" waste fittings and avoid exposing the trap to excessive heat or aggressive chemicals. Regular visual inspection and periodic cleaning will help prevent blockages and maintain the water seal that stops sewer gas ingress.