English name: differential pressure gaugeCYW-152B and CYW153B stainless steel differential pressure gauge (hereinafter referred to as meter) suitable for chemical processes, of solder, metallurgy, electric power, nuclear power and other industrial sectors to measure the differential pressure of various fluid (gas) medium body , flow and other parameters. All meter structure made of stainless steel, wherein the measurement system (dual bellows urgent connecting member), pilot pressure systems (including joints, pipes, etc.) using reasonable special structure design, advanced technology, small size, light weight, good stability long service life, the appearance of new, strong adaptability and other advantages. Joint connection in the form of the instrument parallel type (direct connection with the three valves) and oblique two, able to adapt to different customers supporting the installation.