HDPE Flap valve type PTK-A (with angle of 10 degrees)
Non-return flap valve suitable for permanent under water use with an anchor plate for wall mounting.
1 Mwc measured permanent from top of opening,
5 Mwc short duration (72 hours) from bottom of opening.
Higher pressures on request.
Higher pressures on request. Bigger dimensions on request.
Depending upon size, the door may be reinforced with stainless steel profiles.