Vacuum Guns
Vacuum guns test vacuum actuators, EGR valves and brake boosters. They work on compressed air to create vacuum or pressure. Choose a model with suction and pressure functions if you need to measure overpressure. Check the gauge range in bar or psi. The air connection is usually 1/4 inch. Make sure the hoses fit your diagnostic ports. A set with extra adapters and a case saves time.
Vacuum guns for the workshop
Vacuum guns test vacuum components
Use a vacuum gun to test vacuum actuators, EGR valves and brake boosters. Connect the gun to compressed air. This creates vacuum or pressure. Choose a model with vacuum and pressure functions if you also need to measure pressure. That helps when checking diaphragm actuators.
Check the range and connections
The pressure gauge shows the range in bar or psi. The air connection is usually 1/4 inch. Check that the hoses fit your diagnostic ports. A set with extra adapters and a case saves time. You always have the right fitting at hand.
Where ordering goes wrong
Do not buy a vacuum gun without a pressure gauge. You miss the feedback during testing. Also avoid a model without a pressure function if you need pressure. Check the maximum range of the gauge. This prevents buying a gun that does not suit your work.
A vacuum gun belongs with your test devices, alongside the rest of your measuring tools. For testing air conditioning systems you use air conditioning test devices, and you trace leaks in closed systems with a leak detector. If you work on the brake system, a brake fluid tester fits in well.