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Part No.
DV0V (25"Hg / 650 mm Hg Vac) pump, 1/4" FBSPP gauge
adapter, 1m hose, 1/4― FBSPP process conn.
Pull a vacuum and calibrate vacuum gauges,
transmitters or switches by attaching a gauge
or pressure calibrator (gauge and calibrator not
• Light weight, compact pump generates 23 inHg (584mm Hg)
vacuum with ease
• Large volume fine adjustment piston provides precise control,
even at very low vacuums
• Modular design makes field maintenance quick and easy
• Precisely vent pressure with soft seated bleed valve
• Two outlet ports provide connections for both pressure
reference and for device under test thus eliminating a tee
• 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 reduces pressure changes
due to temperature fluctuations
• Made in U.S.A.
Item Includes
• Hand Pump - DV0V Assembly (DV0V)
• Gauge Adapter - G 1/4" female BSPP (ISO 228/1) x female Quick-test, no check-valve, brass (QTHA-2FBA-RG)
• Hose - Quick-test 6900 psi hose, brass hose ends, 1 m (3.3 ft) long (QTQT-HOS-1m)
• Hose Adapter - G 1/4" female BSPP (ISO 228/1) x male Quick-test, no check-valve, brass (QTHA-2FB0-RG)
Vacuum Range
0 to 23"Hg (0 to 584 mmHG)
Outlet Port1
Male Quick-test outlet port, no check-valve, brass
Outlet Port2
Male Quick-test outlet port with cap and chain, brass
Temperature Range
0 to 130 °F (-18 to 54 °C)
Anodized Aluminum, Brass, Stainless Steel
Seal Materials
Buna-N, Delrin, Teflon
Fine Adjust Resolution
±0.01 psi
1.65 lb (0.7 kg)
H: 2.88 in (7.3152 cm) x W: 7.93 in (20.1422 cm) x D: 3.5 in (8.89 cm)
Ralston Instruments Inc. | | Toll Free 800-347-6575 | Phone 440-564-1430 | Fax 440-564-1480