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COVID-19 NOTICE: Due to the current pandemic, our staff are now working remotely, and dispatch of orders is restricted to Tuesday & Thursday each week.
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Comparators & Hand Pumps

Field calibration of pressure instruments often requires a portable source of stable pressure. We have hand operated pneumatic pumps capable of pressures up to 4500 kPa / 650 PSI, with hydraulic options up to 1,000 Bar / 15,000 PSI. We also supply a wide range of regulators, valves, controllers and manifolds to allow precise pressure control of compressed air or nitrogen in your workshop or laboratory.

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  1. Ralston DV0V Pneumatic Vacuum Hand Pump (-25" Hg)

    Ralston DV0V Pneumatic Vacuum Hand Pump (-25" Hg)

    • Pneumatic Vacuum Hand Pump (-25" Hg / -635mm Hg)
    • Fine adjust vernier with ±0.01 PSI resolution
    • Complete with hose & 1/4in MNPT connector
    • Gauge Adapter Options Available (DV0V-1MBA / DV0V-2MBA / DV0V-2FBA)

    $590.00 ex GST
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  2. Transcat LTP1 Pneumatic Vacuum / Pressure Hand Pump (2 Bar)

    Transcat LTP1 Pneumatic Vacuum / Pressure Hand Pump (2 Bar)

    • One button selection of Pressure/Vacuum
    • Pressure to 30PSI and Vacuum to -25 "Hg
    • Precision Vernier Adjustment (0.00145 PSI)
    • Inbuilt Pressure Relief Valve

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  3. Ralston DPPV Pneumatic Vacuum / Pressure Hand Pump (9 Bar)

    Ralston DPPV Pneumatic Vacuum / Pressure Hand Pump (9 Bar)

    • Pneumatic Vacuum & Low Pressure Hand Pump (-23" Hg to 9 Bar / 125 PSI)
    • Fine adjust vernier with ±0.01 PSI resolution
    • Complete with hose & 1/4in MNPT connector
    • Gauge Adapter Options Available (DPPV-1MBA / DPPV-2MBA / DPPV-2FBA)

    $810.00 ex GST
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  4. Ametek T-975-CPF Pneumatic Vacuum / Pressure Hand Pump (40 Bar)

    Ametek T-975-CPF Pneumatic Vacuum / Pressure Hand Pump (40 Bar)

    • Vacuum & Pressure Range: -28.5" Hg to 40 Bar / 600 PSI
    • Crystal Hose & QC Gauge & Calibrator Fittings
    • Lightweight, compact design
    • Protected shuttle valve
    • Fine adjust sensitivity to 0.01 psi

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  5. Ralston DCAP-PV Pressure / Vacuum Hand Pump (-28.5 Hg / 45 bar)

    Ralston DCAP-PV Pressure / Vacuum Hand Pump (-28.5 Hg / 45 bar)

    • -28.5 Hg to 650 PSI / 45 Bar Range
    • Precise 0.001 PSI Fine Adjust Resolution
    • Quick-Test Leak-Free Connections
    • Durable Aluminium & Steel Construction

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  6. Ralston Nitropak Portable Nitrogen Pressure Source (210 Bar)

    Ralston Nitropak Portable Nitrogen Pressure Source (210 Bar)

    • 210 Bar / 3000 PSI Range
    • Integrated Refillable Gas Cylinder
    • Ralston Quick-Test Male Pressure & Fill Port Connections
    • Optional NPT / BSPP Adapters & Hoses

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  7. Crystal GaugeCalHP Hydraulic Vacuum / Pressure Gauge Comparator (1000 Bar)

    Crystal GaugeCalHP Hydraulic Vacuum / Pressure Gauge Comparator (1000 Bar)

    • -25" Hg to 1000 Bar / 15000 PSI Hydraulic Range
    • -25" Hg to 995 mbar / 14.4 PSI Pneumatic Range
    • Portable, Easy to Use & Faster Than a Deadweight Tester
    • Pivoting Manifold with Crystal CPF (7/16"-20 MP) Male Swivel Fittings
    • 1/4" NPT Female Gauge Adapter

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