Pressure gauge thread specifications
In domestic engineering, pressure gauges generally use metric threaded joints, such as M20 * 1.5, and M14 * 1.5 or M10 * 1 threads are used on some small gauge diameters. In addition, some items may use inch threaded joints, such as G1 / 2, G1 / 4 or G1 / 8 for small gauges. The above two are straight threads, which are sealed at the end, and need to be installed according to different working conditions. Use different gaskets. In addition, NPT threads will be used in some joint ventures or projects that adopt foreign patents. The commonly used is 1 / 2NPT, the small diameter is 1 / 4NPT, and the 1 / 8NPT is rarely used. This is an American standard thread, tapered buckle. This thread is sealed by a threaded fastener and no gasket is required.
