Why are cast iron clappers in reservoirs round and square?
cast iron Knock on the door It consists of valve seat, valve plate, dense soil sealing ring and hinge.
Cast iron flap door Circular and square outlets for unidirectional flow only. It has strict structure and reliable operation. It doesn't need to be operated manually.
When the water pressure in the gate is greater than the pressure outside the gate, the water source pressure opens. Otherwise, it will shut down.
Cast iron flap door Gate installation:
The door can be installed in the following ways: flange connection, concrete pouring.
The allowable deviation between the middle of the gate and the middle of the runner should not exceed 3.0 mm.
There should be a 400mm installation space around the door and a 1:5 Inclination under the exit door.
Door mounted fittings: stainless steel or corrosion resistant carbon steel for bolts or expansion wire; rubber or rubber gasket for sealing.
Cast iron doors are square and round; cast iron doors can be cast iron or steel. Cast iron baffles in the reservoir are mainly used in the drainage system to prevent water backflow. The baffle has the function of opening and closing the flow path forward. The counterweight flap door is opened or closed by counterweight balance or a little external force. The floating plate uses the buoyancy of the door plate in the water to open or close the door plate under the action of water flow. 。
Cast iron flap door is a one-way valve installed at the outlet of river drainage pipe. When the tide level of the river is higher than the outlet pipe and the pressure is greater than the pressure in the pipe, the door panel will automatically close to prevent the tide water from flowing into the drainage pipe. 。 At present, the membrane is divided into suspension type, single door, double door, energy-saving type and so on.
The cast iron flap door is mainly installed at the end of drain pipe to prevent external water from pouring in. Cast iron door materials are divided into stainless steel, cast iron, steel, composite materials (glass fiber reinforced plastic) and other materials. Cast iron door is divided into many types, such as: floating box door, flat door, sleeve door, etc;
The cast iron gate in the reservoir has a garden, which can be selected according to needs. Choose different lenses for different needs.