Vaiseshika Electron Devices manufactures Pressure Pumps: Hydraulic & Pneumatic. Vaiseshika Electron Devices Quality Management System is ISO 9001:2000 compliant. The Pressure Pumps: Hydraulic & Pneumatic has manual pressure pump: pneumatic type, with pressure medium: air and pressure range: -1 [-850mbar]....3 bars. These Pressure Pumps: Hydraulic & Pneumatic can adjust pressure via pressure piston and has fine trigger valve, with pressure release valve. The Pressure Pumps have pressure/vacuum selection switch, with pressure connection: reference: G 1/4inch 1, hose device under test, G 1/4inch 1, hose. Dimensions are D=46 mm L=170 mm and Weight is 600 gm. Accessories included in Pressure Pumps: Hydraulic & Pneumatic is sealing set made of nylon, store case and 2 pressure hoses. Set of adapter: G 1/8", G3/8", G1/2" [cylindrical], 1/8" NPT, 3/8" NPT, 1/4" NPT and 1/2" NPT [conical].