Female Needle Valve
A female needle valve is used as a flow control. The valve flap is usually integrated with the valve stem, which has a needle-shaped head that fits the valve seat. Moreover, the pitch of the stem threads of female needle valve is thinner than that of the stem threads of ordinary globe valves. Under normal circumstances, the size of the seat hole of female needle valve is smaller than the pipe size.
Overview
Procedure：
1. First of all, you should choose a suitable pressure gauge to ensure that its measuring range meets the requirements.
2. Before installing the pressure gauge, check whether the components are normal to ensure accuracy.
3. The pressure gauge must be connected closely with the pipeline to ensure that there is no air leakage in the pipeline.
4. A needle valve should be installed at the inlet of the pressure gauge to adjust the pressure entering the gauge.
5. In the process of long-term use, the pressure gauge should be checked and maintained regularly to ensure its accuracy.
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