Pneumatic Pressure-Vacuum Hand Pump DCAP-PV Overview A versatile, easy-to-use pressure pump that allows you to quickly switch to vacuum testing with just a turn of a knob, the Ralston DCAP-PV Pressure-Vacuum Hand Pump is ideal for calibrating DP pressure transmitters, testing pressure switches, or checking pressure gauges in the field. Pneumatic Pressure-Vacuum Hand Pump DCAP-PV Features Ability to generate pressure to 650 psi / 4.5 MPa Ability to generate vacuum to 28.5 inHg / 710 mmHg Quick switch from pressure to vacuum testing at the turn of a knob – no additional tool required Each pump comes with Ralston Quick-test™ connections for easy connection in the field Multiple pressure ports for connecting both a reference gauge and a hoe to the device under test Durable, no-slip metal handles do not fatigue and come loose over time Stainless steel fittings prevent damage from corrosion, wear or hazardous substances Fine adjust piston with bronze bearing allows smooth, precise adjustment of pressure Made in the USA