Milton Roy metering pumpDiaphragm membrane refers to the membrane that comes into direct contact with the highly corrosive liquid being transported by the metering pump, thus requiring high anti-corrosion requirements. In the industries of biopharmaceuticals, brewing, milk, beverages, steam production, food processing, disinfection equipment, water supply equipment, and water distribution equipment in contact with drinking water, a large number of diaphragm valves are required to implement various controls. As a valve core component of the heart, the hygiene quality of its diaphragm is strictly monitored by the health supervision department. How to replace the diaphragm membrane during operation?

1. Remove the 4 screws that secure the pump head. The screw is located on the back of the metering pump.

2. After the pump head is loose, adjust the stroke length to 0% before removing the pump head. It can ensure that the electromagnetic shaft has sufficient pressure to maintain a stable connection, so that the diaphragm can be unscrewed.

3. Pull the hydraulic end outward to detach the screw from the socket. Grasp the liquid end and rotate counterclockwise. If there is a slight resistance, you can unscrew the diaphragm.

Once the diaphragm is removed, check the safety diaphragm of the metering pump to ensure that it is intact and undamaged. Install the new diaphragm and rotate the backplate and diaphragm clockwise until they are tightly attached. Adjust the back plate so that the leakage discharge hole is located at the bottom of the pump.

5. After the diaphragm installation is completed and the back plate leakage discharge hole is placed in a vertical position, install the pump head. Ensure that the suction valve is aligned with the leakage discharge hole, and the screws on the hydraulic end are aligned with the corresponding 4 holes.

6. Rotate to the 100% stroke length position. This can rotate the entire set of components until the back plate leakage discharge hole aligns with the bottom end of the pump. Adjust the hydraulic end and diaphragm to the proper position during the operation of the pump.

After adjusting the position of the hydraulic end and the back plate, tighten the four bolts diagonally until they are suitable. You should apply even force when completing this task.

Move the hydraulic end by loosening the 4 pump head screws. Rotate the stroke length to 0% and grasp the hydraulic end, then slide out from the screw hole, so that the screws do not come into contact with them, but still hold the back plate and diaphragm. Then rotate this component counterclockwise, with a slight resistance, and the diaphragm will loosen from the electromagnetic shaft. If the diaphragm has not loosened yet, use some lubricating oil on the contact surface between the diaphragm and the electromagnetic shaft. After leaving it for a few minutes, gently tap the diaphragm with a plastic hammer. Then proceed again according to the above description.