The McAlpine WCTRAP4S is a 50mm water seal push-fit 'S' trap that is commonly used in plumbing applications.

An 'S' trap is a type of plumbing trap that is used to prevent sewer gases from entering a building's drainage system. The trap works by holding water in a U-shaped bend in the pipe, which creates a barrier that prevents odors and gases from passing through.

The McAlpine WCTRAP4S features a 50mm water seal, which is the depth of water that is held in the trap to prevent gases from passing through. The push-fit design allows for easy installation without the need for additional tools or fittings. This 'S' trap is suitable for use with most standard washbasins, sinks, and bidets.

Overall, the McAlpine WCTRAP4S is a reliable and convenient plumbing trap that provides effective odor and gas prevention for your plumbing system.

・ 50mm Water Seal
・ 90-114mm plain end outlet
・ Suits WC squatting pans, slop hoppers or similar appliances
・ Will connect to 110mm pipe
・ Manufactured in high density polyethylene