1. Inspection of appearance and logoCheck content: whether the appearance of the valve has defects, such as cracks, bubbles, dents, etc. Check signage, nameplate and finish for compliance.Standards: International standards including API 598, ASME B16.34, ISO 5208, etc.…

Ball valve has many kinds of structure, but basically the same little difference, are the opening and closing parts for the round ball core, mainly by the valve seat, ball, sealing ring, stem and other driving devices, etc., through the stem rotation 90 degrees to achi…

In the thermal system, the thermal trap plays a very important role, and its performance directly affects the stability and energy efficiency of the steam system. As the key equipment in the steam system, the thermal trap can not only automatically remove condensate, p…

Gate valves usually have single gate, double gate, wedge, parallel and other structural designs, in which wedge double gate (Z42, Z62 series) and wedge elastic gate (Z40, Z60 series) are the most widely used, the former is closed, the gate automatically fits both sides…

The sealing performance of the valve directly affects the control effect of the fluid medium and the safe operation of the system, the grinding of the valve sealing surface is one of the important means to ensure its sealing performance, its main purpose is to eliminat…