What specific aspects should be paid special attention to when evaluating bids for the purchase of pneumatic on-off valves and control valves?
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What specific aspects should be paid special attention to when evaluating bids for the purchase of pneumatic on-off valves and control valves? What areas, if not paid attention to, can lead to pitfalls?
It is important to choose a manufacturer with a reputable brand. It is necessary to conduct an on-site inspection of the actual product, especially to check the marking indicating the pressure and diameter resulting from one-piece casting on the valve body. The good ones are cast as one piece; I’ve seen ones that aren’t cast together, as well as those that are attached separately,,,,, Indication of the application range of the valve, internal structure of the valve. Actuator, for the manual mechanism of self-regulating valves,,,,. Finally, there are the after-sales terms stipulated in the contract, as well as the provision of spare parts. For reference.