Emergency method for installation and failure of diaphragm valves

Emergency method for installation and failure of diaphragm valves

The diaphragm valve is a special form of shut-off valve that has the following characteristics compared to other valves:

1. Elastically sealed opening and closing parts ensure no internal leakage;
2. Streamlined flow path, resulting in low pressure loss;
3. No filler, so there is no leakage;
4. The valve body and the cover are separated by the intermediate diaphragm, so that the valve cover, the valve stem and the like above the diaphragm are not eroded by the medium;
5. The diaphragm can be replaced and the maintenance cost is low;
6. The lining material is versatile and can be applied to a wide range of media with good corrosion resistance.

Diaphragm valve installation and maintenance

1. Before installation, carefully check whether the operating conditions of the pipeline are consistent with the applicable range specified by the valve, and clean the inner cavity to prevent dirt from damaging or damaging the sealing components.
2. Do not apply grease to the surface of the rubber-lined laminated rubber diaphragm to prevent the rubber from swelling and affect the service life of the valve.
3. Do not tie the clue to the lifting valve on the handwheel or valve stem during installation.
4. When operating the valve manually, the auxiliary lever should not be used to prevent damage to the drive or seal parts due to excessive torque.
5. The valve should be stored in a dry and ventilated room. It is strictly prohibited to stack. The passages at both ends of the inventory valve must be sealed, and the opening and closing parts should be in a slightly open state.

Failure and elimination