Flange mounted flap valve type PTK-F 250mm is recommended for use both below and above the waterline. The PTK-F 250mm flange mounted flap valve is hung at a 10 degree angle to ensure a water tight seal.
Benefits of the PTK-F flap valve include:
Materials: HDPE, SS316, EPDM
The flap valve is HDPE with HDPE ribs and can be further reinforced where necessary with stainless steel
Unit weight: 12Kg
Max load from bottom invert level (B.I.L): 1.25MWC long period (50 years)
5 MWC short period (72 hours)
The valve plate and the back plate are manufactured in HDPE. The hinge pin and ballast weight are manufactured in SS316 as standard. The ballast weight can be easily adjusted if required. The sealing arrangement consists of an EPDM lips seal in the back plate. The valve plate is also installed on an angle in relation to the back plate to ensure a good seal.
All dimensions in millimetres