McAlpine 1½" Plastic Bath Space Saver with Self-Closing Waste Valve

Finished in white plastic, it's built to fit into tighter spaces than a standard trap allows. Manufactured from durable plastic and tested to BS EN 1451-1 / BS EN 1329-1, it connects via a 1½" BSP female inlet nut and a 1½" universal compression outlet, with an overall height of just 75mm. The valve also admits air into the waste pipe when negative pressure builds up, removing the need for secondary ventilation and giving more flexibility in the plumbing design. It can be cleaned in place: remove the split pin, take out the plug and membrane, wash in hot soapy water and reassemble. It's a straightforward retrofit for baths where pipework space beneath the appliance is limited, and works as a like-for-like replacement wherever a standard trap won't fit. Note: not recommended for kitchen or utility sinks.