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.

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)

$645.00 ex GST As low as: $620.00 ex GST
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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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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)

$880.00 ex GST As low as: $850.00 ex GST
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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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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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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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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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