Product Description HX7620C Pneumatic Comparator consists of hand pump, lead screw, reverse valve, relieve valve and output interface. It features high sealing, stable pressure generating and simple operation. It is suitable in the laboratory. It could supply the pressure for calibrating pressure (differential pressure) transmitter, precision pressure gauge, general pressure gauge and other pressure instruments. Characteristics . Food grade stainless steel and hermetic technology in the military industry . High precision, stable pressure generating, easy operation. . Wide pressurized range, high vacuum degree . High reliability, Wide micro-adjusting range Technical Specification . Pressure Range: (-0.98~60) bar . Working Media: Air . Output Interface: M20×1.5 Female . Dimensions (L×W×H): 380mm×380mm×200mm . Weight: 14.8Kg