The prime reason for using this Pressure Comparison Test Pump is to check pressure calibrating instruments against transducers, indicators or measuring instruments. Fine metering valves in this product allow pressure inlet and pressure outlet with ease. Our product is utilized to conduct pressure gauges and switches calibration in the shipping, petrochemical, chemical and pharmaceutical industries. Each product has a built-in hand pump for system priming applications. Made up of quality assured components, this product provides an efficient and convenient means to check pressure measuring instruments up to 20,000 psi (1400 bar). This Pressure Comparison Test Pump features an acrylic reservoir to provide clear visibility of the level of fluids and quality.