Aluminum alloy piping manufacturers for you to introduce pressure gauges

Requirements for installation and use of pressure gauges: each boiler must be equipped with a pressure gauge directly connected to the steam space of the drum. Before the regulating valve of the feed pipe, the outlet of the split-type economizer, the outlet of the superheater and the main steam valve shall be equipped with a pressure gauge for the reheater superheater. The pressure gauge should be placed in a place where it is easy to see and wash, free from vibration and high temperature, and provided with sufficient light.

Aluminum alloy pipe description, the pressure gauge to be installed independently, should not be connected with other pipes. There should be water storage elbow between pressure gauge and drum, water storage elbow and pressure gauge should be installed between the three - way cock. When the water retaining pipe is made of steel pipe, its inner diameter shall not be less than 10mm; When made of copper tube, its inner diameter should not be less than 6mm.

Three-way cock installation should be easy to wash water storage elbow, check, repair, remove the installation of the place. The calibration and maintenance of the pressure gauge device shall comply with the provisions of the national metrology department. The pressure gauge should be checked before loading and the working pressure should be indicated by a red line on the dial. At least once every half year after installation. The pressure gauge should be sealed after check. The pressure gauge should be discontinued under any of the following conditions.

The pressure gauge with limited nail cannot return to the limited nail after the pointer turns when there is no pressure. Pressure gauges without limiting nails in the absence of pressure, the needle from zero value exceeds the gauge specification allows a large error. Surface glass broken or dial scale blurred. Lead seal damaged or over the validity period of calibration. Steam leakage or jumping of indicator. Other defects that affect the accuracy of the pressure gauge.

The pressure gauge shall be installed in such a position that it can be easily observed and cleaned by the operator and shall be free from the adverse effects of radiant heat, freezing or vibration. A three-way cock or needle valve shall be installed between the pressure gauge and the pressure vessel. The three-way cock or needle valve shall have an opening mark and a locking device; Between the pressure gauge and the pressure vessel, no accessories or connections for other purposes shall be connected.