Ralston Calibration Pumps, Fittings, Adaptors and Hoses
Featured Products:
Pneumatic Pressure Calibration Pumps
NITROPAK™ NPAK-0000
DPPV Vacuum and Pressure Pump
DPOV Pressure Pneumatic Pump
APGV Pressure Pneumatic Pump
Hydraulic Pressure Calibration Pumps
HPGV & XHGV Hydraulic Pump
QTCM High Pressure Gas Calibration Manifold
Pressure Calibration Volume Controller
Pressure Calibration Volume Controller
PDFs:
Pressure Creation Catalogue (pdf format)
Hose and Fittings Catalogue (pdf format)
We can help you configure a "Quick Test Kit" to suit your specific requirements including calibrators, test gauges, test hoses, fittings and adaptors and carry and storage cases. 1-888-863-8010
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Pneumatic Pressure Calibration Pumps |
Ralston NITROPAK™ NPAK-0000
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Need More information?
Download NitroPak Brochure PDF
>Visit Ralston's website
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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. |
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Features
- High pressure Nitrogen calibration pressure source (3000 psi/207 bar) for use in gas calibration
- 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
- All tubing and fittings are 304 Stainless Steel
- Pressure balanced fine adjustment piston for precision pressure control
- Nylon bag to hold hose and fittings attached to inside of lid
- 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
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Ralston DPPV Vacuum and Pressure Pump |
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The new DPPV from Ralston Instruments combines both vacuum to 24" hg and pressure to 80 psi in one pump. The easy to use vacuum to pressure valve, large vernier and rugged reliable design makes this your best value in a combination pump. |
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Features
- Simple, small, light weight, all metal pump
- Excellent control at low pressures
- Provides both vacuum and pressure in one pump
- Large vernier and rugged, reliable design
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Ralston DPOV Pressure Pneumatic Pump |
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Our best low pressure pneumatic pump. Capable of generating low inches of H2O to more than 80 psi with an excellent fine volume control. The pump is easily converted to a vacuum source by changing the check valve. Solid anodized aluminum construction with brass internals and fittings. DPOV pumps have two pressure ports and are supplied with a 3' micro bore hose and 1/4" npt adaptor. |
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Features
- Simple, small, light weight, all metal pump
- Excellent control at low pressures
- Has two outlet ports (one capped when not in use)
- Can be supplied as a pressure or vacuum pump
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Ralston APGV Pressure Pneumatic Pump |
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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. |
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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
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Hydraulic Pressure Calibration Pumps |
Ralston HPGV & XHGV Hydraulic Pump |
Need More information?
>Visit Ralston's website
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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 |
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Features
- Fine adjustment piston and bleed-off valve
- Two outlet ports
- Available in 3000 and 5000 psi models
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Ralston QTCM High Pressure Gas Calibration Manifold |
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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. |
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Features
- Brass block calibration manifold with quick disconnect hose connections on both ends, metering inlet valve, bleed-off valve, and fine adjustment piston
- Microbore outlet hose with 1/4" NPT adapter for a connection to the instrument to be calibrated (24"long)
- Minimum volumes in outlet hose and manifold enables maximum pressure adjustment with fine adjustment piston. Hoses are pressure rated to 5000 psi.
- Manifold is rated to 3000 psi
- Microbore inlet hose (20" long) with 1/4" NPT connection for the pressure supply and quick disconnect (with built-in check valve) for manifold.
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Pressure Calibration Volume Controller
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Ralston Pressure Calibration Volume Controller |
Need More information?
Download Pressure Calibration Volume Controller Brochure PDF
>Visit Ralston's website
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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). |
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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 and adapters
- Optional stand for laboratory or tabletop use
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