Manual pneumatic pumps Ralston DCAP are reliable tools for precise pressure calibration, designed to perform in a wide range of environments. With their straightforward and intuitive design, these pumps are an ideal choice for both laboratory applications and fieldwork.  

They allow you to quickly generate the necessary pressure or vacuum for testing gauges, sensors, and other measuring instruments. Durable materials and high accuracy ensure long-term performance, meeting the demands of even the most meticulous users.  

Combining compactness, ease of use, and precise pressure control, these pumps are indispensable for professionals in the calibration field.

DCAP

An exceptionally durable hand pump for use in the field for doing pressure calibration, testing and custody transfer. Perform pneumatic field calibrations on pressure transmitters, switches or gauges using an external pressure calibrator as the reference

Pressure calibration can be performed without electricity or nitrogen
Two outlet ports allow the user to attach pump to both device under test and external pressure reference thus eliminating a tee
Fine adjustment piston allows the user to achieve an exact pressure for cardinal point pressure calibrations
Precisely vent pressure with soft seated bleed valve
Low volume Quick-test hose, gauge adapter and process connection can be attached to pump without thread sealant or a wrench
Rugged, all metal construction improves temperature and pressure stability

DCAP-PV

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.

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 hose 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