The safety valve is a special valve that is in a normally closed state under the action of external force. When the pressure of the medium in the equipment or pipeline rises beyond the specified value, it discharges the medium to the outside of the system to prevent the medium pressure in the pipeline or equipment from exceeding the specified value…

The sealing surface leaks 1. There are sundries in the butterfly plate and sealing surface 2. The closing position of the butterfly plate and the sealing surface is not properly matched…

We know that the use of the four-way ball valve is still in place for many pipeline controls, but we also need to be prepared to prevent leakage during use. We should also be familiar with the common methods, so everyone knows that the four-way ball valve prevents leakage. …

There are single eccentric sealing butterfly valve, double eccentric sealing butterfly valve and triple eccentric sealing butterfly valve.…

The valve or pipeline flange cover cannot be disassembled. If it is not prepared to connect with the pipeline, the temperature difference and foreign matter will cause the surface of the PTFE flange to be bumped, scratched, deformed or affect the performance of the insulation valve.…

The electric angle control valve usually adopts the flow direction of the open type (that is, the bottom enters and the side exits), and the electric actuator contains the feeding function, which accepts a unified 4-20mA or 1-5V·DC standard signal, and converts the current signal into phase.…

The anticorrosion of metal valves can be understood as the coating of conditional protective layers (such as paints, pigments, lubricating materials, etc.) on metal valves to protect them from corrosion, so that the valve can be used in the whole process of manufacturing, storage, transportation or use. not corroded.…

A valve that opens and closes with the force of the medium flow to prevent the backflow of the medium is called a check valve. Check valves belong to the category of automatic valves. Mainly used in pipelines where the medium flows in one direction, allowing the medium to flow in only one direction to prevent accidents.…