It is a robust design that is aided, in some couplers, by a centre shear band which provides resistance against heavy earth loads and shear forces, helping to ensure pipe alignment with joint flexibility.

In winter, we often keep the windows closed to keep the heat in, but unfortunately that is when the problems arise. Additional EPDM sealing material can be compressed through sealing lines - giving special advantage for sewer pipes with rough surfaces e. General Locations - Flap valves should be fixed so as to avoid the accumulation of debris around the invert which could prevent the valve operating correctly. If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. The flap has an inbuilt stainless steel plate to stop rodents biting through, providing efficient pest control.

Most purchases from business sellers are protected by the Consumer Contract Regulations 2013 which give you the right to cancel the purchase within 14 days after the day you receive the item.

Prevents the effect of back draught which occurs during windy conditions or when the temperature outside the building is higher than the temperature inside. Fans offered by us feature high air exchange efficiency, quiet operation, low energy consumption as well a vast selection of optional equipment. In the step-by-step plan below, we also explain how to install bathroom ventilation with timer and humidity sensor.Therefore it is recommended that careful consideration is given to the positioning of valves and they are installed within an outfall bay or otherwise protected from direct wave action by baffles. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH). The valve has a spigot and socket with integral seal as standard for direct connection to solid walled PVCu pipe, but can be connected to other pipe material using Mission Rubber Flexible Couplings.