Althon flange mounted flap valves type PTK-F are recommended for use both below and above the waterline. The PTK-F flange mounted flap valve is hung at a 10 degree angle to ensure a water tight seal. The PTK-F flanged flap valve is suitable for use with a water pressure of 5 MWC for 72 hours and 1 MWC for 50 years. The flap valve is HDPE with HDPE ribs and can be further reinforced where necessary with stainless steel

The flange connection on our PTK-F valves can be specified to PN10 or PN16. Our flanged valves are manufactured in HDPE and can be further reinforced if required with stainless steel. 

If you require any assistance or more information please contact us by phone on 01603 488700 or by email