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Blue metal air-powered cooling system pressure tester gauge with hose and quick connector, model 7856, reads up to 30 PSI

Astro Pneumatic Tool 7856 Universal Air Powered Cooling System Pressure Tester gauge

SKU CH-7WW8-Y68BG

Tests cooling systems and radiator caps for leaks using regulated shop air up to 30 psi

  • Regulates shop air to 30 psi for safe cooling system leak testing
  • Quick connector fits nearly all brands of testing caps and adapters
  • Fills large cooling systems almost instantly for rapid diagnostics
  • Maintains constant pressure on leaks to pinpoint their exact source
  • Built-in gauge shows common pressure levels for accurate readings

Universal Cooling System Pressure Tester

The Astro 7856 is a pneumatic gauge that regulates shop air to pressure-test radiators and cooling systems for leaks. It fits nearly all brands of testing caps and adapters through its quick connector. The tool fills even large systems almost instantly while maintaining constant pressure to pinpoint leak sources. A built-in gauge shows common pressure levels up to a maximum of 30 PSI.

Professional Mechanics and DIY Users

This tester suits technicians who need fast, regulated pressure to diagnose cooling-system leaks on a wide range of vehicles. It is not intended for hydraulic pressure testing or for systems requiring test pressures above the 30 PSI regulator limit. Buyers who need electronic data logging or non-pneumatic operation should consider alternative diagnostic methods.

30 PSI Maximum Regulated Pressure

The built-in regulator caps shop air at 30 PSI to protect radiators, hoses and caps from over-pressure damage. This fixed limit decides whether the tool matches the pressure specification of the system being tested. The gauge face displays common cooling-system pressure levels for quick reference during the test procedure.

How it compares

Measured against everything we stock in Gauges & Tachometers, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 74% of the 193 comparable items (median $35.99).

Specifications

No published specifications for this item yet.

Questions about this item

How do I connect the Astro 7856 to my shop air supply and what step is often missed?

Attach the tool to your shop air line, then use the built-in regulator to set pressure up to 30 PSI; the step often missed is confirming the quick connector is fully seated on the cooling-system adapter before pressurising.

What maintenance will the Astro 7856 need over time?

Inspect the quick connector O-rings and gauge lens for cracks before each use; replace worn seals and verify the regulator still limits pressure to 30 PSI to prevent damage.

What is the first limit reached when testing a large cooling system continuously?

The regulator caps pressure at 30 PSI, so sustained use on a large system will hit that maximum pressure limit before the tool can supply more.

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