How should gas gate valve products meet user requirements

How should gas gate valve products meet user requirements:

    The material is corrosion-resistant. The valve is buried in the ground or built in the valve well. The weak acid and weak alkali in the soil have a corrosive effect on the valve. Once the valve is built, it will be used for decades. In order to reduce maintenance costs and operating costs, the valve body is required to be made of corrosion-resistant materials. The structure is reasonable. The buried gas valve should be designed with full diameter, reduce the flow resistance, and facilitate the passage of pipeline cleaners or pipeline detectors, while saving operating costs; reduce the structure height as much as possible to save installation costs; the top of the valve should be equipped with a fully enclosed opening and closing The indicator makes it easy for the operator to see the state of the valve at any time to avoid misoperation.

Gas Gate Valve Operation Manual

    Good airtightness. The leakage requirements of gas gate valves are very strict. The CJ3055-95 "Experiment and Inspection of Town Gas Valves" stipulates that soft-sealed valves are not allowed to have any perceptible internal leakage under 1.1 times the nominal rated operating pressure, and hard-sealed valves are The allowable internal leakage under 1.1 times the nominal rated working pressure is less than 0.3DNmm3/S. As for external leakage, it is not allowed. Generally, buried and more important valves adopt fully welded valve body structure. In order to ensure the sealing performance of pipeline valves, the gaskets are required to have excellent corrosion resistance, wear resistance, self-lubricating properties and elasticity.

PZ41H type slag discharge gate valve

     Easy to operate. Most of the underground pipeline valves are opened and closed manually, so the opening and closing torque of the valve is required to be small, and the number of turns in the whole process cannot be too many, so that the gas source can be cut off as soon as possible after an accident.

     Maintenance is simple. The design of valve parts and components should consider the use of a maintenance-free and maintenance-free structure to reduce the workload of maintenance as much as possible, and reduce the road closure due to valve maintenance, which affects traffic. 2.2 Comparative analysis of several commonly used valves

     At present, the gas valves used in my country's natural gas industry can be divided into three main categories in terms of structure, namely, gas gate valves, ball valves, butterfly valves, etc.