P Traps & Gully Traps

P traps and gully traps are widely used in domestic and commercial drainage to manage wastewater and prevent bad smells. A P trap forms a water seal in a plumbing system, typically beneath a sink or bath. Meanwhile a gully trap connects surface water or grey water to the underground drainage system while maintaining a water seal barrier. These components are key for separating internal pipework from external drainage systems, especially in wet areas or where rainwater needs to be diverted safely.

Modern P and gully traps are often made of plastic, uPVC, or clay for durability and ease of installation. Various options are available including P traps in low back formats for limited-space applications, and drainage gully traps where outdoor discharge meets underground drains. These can be used to comply with building regulations on waste discharge and air admittance.

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