Pneumatic gate valve: valve driven by compressed air.
Pneumatic valve procurement only clear specifications, categories, pressure to meet the procurement requirements of the practice, in the current market economic environment is not perfect. Because the pneumatic valve manufacturers for product competition, each in the pneumatic valve unified design idea, different innovation, formed their own enterprise standards and product personality. Therefore, it is very necessary to put forward the technical requirements in detail when purchasing pneumatic valves, and coordinate with manufacturers to obtain consensus, as the annex of the pneumatic valve procurement contract.
General requirements
1) Specifications and categories of pneumatic valves shall meet the requirements of pipeline design documents.
2) Pneumatic valve model should be indicated according to the national standard number requirements. If the enterprise standard, should indicate the relevant description of the model.
Pneumatic valve
Pneumatic valve
3) The working pressure of the pneumatic valve is required to be greater than or equal to the working pressure of the pipeline. On the premise of not affecting the price, the working pressure of the valve should be greater than the actual working pressure of the pipeline; Pneumatic valve closed condition of any side should be able to withstand 1.1 times the valve working pressure value without leakage; Valve open condition, the valve body should be able to withstand twice the valve pressure requirements.
4) Pneumatic valve manufacturing standard, should explain the basis of the national standard number, if the enterprise standard, the purchase contract should be attached to the enterprise documents.