250mm 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 and is suitable for PN10 or PN16 flange connection to pipework up to 250mm
Benefits of the PTK-F flap valve include:
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
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