3D-SY750 series motor-driven pressure test pumps researched and produced by our factory are the generation-substituting products of motor-driven pressure test pumps of 2-cylinder and 4-cylinder in our country at present. This product has the characters such as small volume, compact structure, stable running, safety and reliability, complete function, great flow, high efficiency and so on. And the suitable range is wide, the compatibility is strong and the operation is simple. They are used for all places, needing pressure burst test and strength test, such as all kinds of pressure container, boiler, pipe fittings and so on. Can lock test pressure value according to the needs and undertake automatic pressure maintaining. The transferring medium of the pump is normal temperature clean water generally. Emulsion, anti-rust water and neutral oil with similar viscosity to water can also be used.