Introduction to the pneumatic diaphragm valve and check the performance of the pneumatic valve and fault

pneumatic diaphragm valve installation maintenance and fault elimination of
installation and maintenance. Pipe installation should be checked carefully before the operation condition are consistent with the applicable scope of the provisions of this pneumatic valve, and should be cleaning the inner chamber, in case of dirt jam or damage the sealing parts. 。 Rubber lining laminated rubber diaphragm surface do not besmear brushs oil kind items, in case the rubber swelling, affect the service life of the pneumatic valve. 。 When installation, must not be clue tying with handwheel or pneumatic lifting pneumatic valve stem. 。 Manual operation of the pneumatic valve, can not with the aid of auxiliary leverage, to prevent excessive torque drive component or sealing parts and injury. 。 Pneumatic valve should be stored in dry and ventilated room, it is strictly prohibited to pile up, stock channels must be sealed on both ends of the pneumatic valve, and open-close part should be slightly open.
the fault and eliminate the cause of the problem of eliminating method the handwheel operation is not flexible. Pneumatic valve rod bending. Replace the pneumatic valve stem thread damage. Trim thread and lubricating pneumatic pneumatic valve cannot be automatically opening and closing. Air pressure is too low. Spring pre-tightening force is too large. Damage of rubber diaphragm. Higher gas pressure. Reduce spring pre-tightening force. Replace the pneumatic diaphragm valve with pneumatic valve bonnet joint leakage. Connection is loose. Pneumatic valve body lining rubber rupture. Fastening bolts. Replace the pneumatic valve body
check pneumatic valve performance specification and the installation
the wafer check pneumatic valve is a universal one-way flow pneumatic valve. Its light weight, small size, easy installation between the flange, mechanical pneumatic valve inside is composed of two semicircle spring and the plate, with the pins on the pneumatic valve spring deformation to close the pneumatic valve plate, fluid pressure and its open spring deformation soon, so that can protect the pipes from water hammer damage.
note
placed the piping should be paid attention to when making the wafer check through the direction of the pneumatic valve in line with the direction of flow.
vertically installed in the pipeline. For horizontal pipe, vertically wafer check valve pneumatic valve.
in the wafer check pneumatic valve and butterfly valve is used between a telescopic tube, don't pneumatic valve is directly connected with the other.
in the pneumatic valve plate within a radius of operation, to avoid joining pipe joint and obstruction.
don't in front of the wafer check valve pneumatic valve or behind a variable diameter pipe installation.
the wafer check pneumatic valve installed near the elbow, pay attention to have enough space.
in the export of pump installation wafer check valve pneumatic valve, pneumatic valve diameter out of at least six times space to ensure that the butterfly plate in the end by the fluid.