The manual pressure test pump is the main test instrument for measuring the pressure vessel and the pressure equipment. The highest working pressure can reach 800 kg/mm. It can correctly point out the correct pressure at any stage within 0-800 kg/mm for hydraulic test. It is widely used in boiler, chemical industry, light industry, construction and installation engineering, aerospace, scientific system, specially test all kinds of pressure vessels and pressure equipment, pipeline valves, rubber pipe fittings and other pressure devices for pressure test. In order to let you better understand the pressure test pump, in this article, we introduce the operation process of manual pressure test pump.