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Ralston Instruments Products Pressure Calibration Pumps Ralston DPPV & DPOV Vacuum and Pressure Pum
Request Quote	The DPPV and DPOV pumps from Ralston Instruments are our best low pressure pneumatic pumps. The DPOV is capable of generating low inches of H20 to 80 psi and the DPPV from 24"Hg vacuum and pressure to 80psi. Both pumps have two pressure ports and are supplied with a 3' microbore hose and a 1/4" npt adaptor. Download DPPV Brochure Download DPOV Brochure Ralston Instruments Website	Features Simple, small, light weight, all metal pump Excellent control at low pressures Has two outlet ports (one capped when not in use) Large vernier and rugged, reliable design

Ralston APGV Pressure Pneumatic Pump
Request Quote	A simple reliable pneumatic pump with volume adjustment for pressures to 220psi. The APGV pump is supplied with two connections, one with a micro bore hose fitting and the other a full swivel " female npt. Can be used with any calibrator or test gauge. Crystal calibrators and test gauges can be direct mounted. Ideal for quick test and calibrations of gauges, pressure switches and relief valves. Supplied with one 36" Micro Bore hose and " male npt adaptor. Download the Brochure Ralston Instruments website	Features Pressure relief valve in the fill plug to prevent back pressure damage Check valves which may be easily removed for cleaning A hanging ring which permits hands-free operation A check valve in the outlet fitting which eliminates leakage from the pump into your tool box

Ralston HPGV & XHGV Hydraulic Pump
Request Quote	The HPGV and XHGV are our most popular hydraulic pumps. The two models are available to generate and set pressures as high as 5000 psi. A convenient volume adjust provides fine pressure control. The generous fluid reservoir ensures plenty of fill capacity. This pump can be used with hydraulic oil, water or methanol. The HPGV has two connections one with a micro bore hose fitting and the other with a 1/4" female npt swivel fitting. Crystal calibrators and XP2i's can be direct mounted. Comes complete with one 3' micro bore hose and one 1/4" npt adaptor Download HPGV Brochure Download XHGV Brochure Ralston Instruments website	Features Fine adjustment piston and bleed-off valve Two outlet ports Available in 3000 and 5000 psi models

Manual Pressure Controllers Ralston NITROPAK™ NPAK-0000
Request Quote	The new Ralston Instruments NITROPAK™ is an innovative Portable Pressure Supply with a high pressure gas calibration source of up to 3,000psi. The NITROPAK™ comes with all stainless steel fittings, tubing, test hoses and fill hoses. It is also equipped with pressure balanced fine adjust for precision control all contained in a rugged ABS case. Download the Brochure Ralston Instruments website	Features Refillable Nitrogen cylinder with enough gas for several days of calibration Two test ports to connect to device under test and pressure calibrator or pressure gauge Storage compartment for pressure calibrators in control panel Comes complete with hoses for filling the nitrogen tank and to connect to the device under test

Ralston Pressure Calibration Volume Controller
Request Qu ote	Designed for bench top or panel mounting the PCVC provides the ultimate in manual pressure control. Two outlet (test ports) and an inlet port all with Quick Test fittings allow the connection of both the pressure reference and device under test directly to the PCVC. The balanced variable volume is ideal for floating the piston on a precision deadweight tester or setting a precise pressure on a high resolution digital reference. The PCVC is best used with a nitrogen supply or instrument quality air with pressure capability to 3,000 psi (20,000 kpa). Download the Brochure Ralston Instruments website	Features Calibrate pressure instruments to 3000 psi (210 bar) in the field or in the laboratory using nitrogen Balanced fine adjustment allows for extremely precise control of pressure even at high pressure Fine adjust piston, fill, balance and vent valves in one light weight, compact unit Includes handle, Quick-test System™ outlet ports, hoses, adapters & laboratory stand

Ralston QTCM High Pressure Gas Calibration Manifold
Request Quote	The QTCM calibration manifold incorporates Ralston "Quick Test" fittings and hose connections, inlet and outlet needle valves, calibrator and test ports as well as a volume adjust that allows for precise pressure control and adjustment. Now you have one neat compact package that mounts directly to your pressure calibrator or test gauge and allows you to calibrate using a high pressure gas supply up to 3000 psi! Supplied with a 20' micro bore inlet hose and 2' micro bore test hose and 1/4" npt adaptor. Download the Brochure Ralston Instruments Website	Features Brass block calibration manifold with quick disconnect hose connections on both ends, metering inlet valve, bleed-off valve, and fine adjustment piston Minimum volumes in outlet hose and manifold enables maximum pressure adjustment with fine adjustment piston. Hoses are pressure rated to 6900 psi.

Hoses and Fittings
Request Quote	Quick test fittings from Ralston Instruments provide a convenient method of connecting Ralston Pumps and micro bore hoses to your pressure calibrators, test gauges and to the instrument under test. Connections that use the Ralston knurled probe nut are finger tight. Download the Brochure Ralston Instruments website	Features All fittings are rated for 5000psi and available in both 316 SS and brass. Micro bore hoses are supplied with the Ralston knurled probe nut or with tube ends for use with your own tube fittings. Hoses are very flexible and have an inside diameter of 0.070” and are rated for 6,900psi. Available in standard 3’ and 5’ lengths or custom ordered to your requirements.