Details
The Barrow GJQM-01 is a hand-pump leak tester for water cooling loops. You connect it to the loop, pump air into the dry system, close the valve and watch the needle: Barrow says that if the needle has not dropped back after 10 seconds, the loop is tight. That way you find a loose connection before any coolant is in the system.
Properties
- Type
- Manual air tightness tester
- Gauge
- 0 to 1 bar, three color zones
- Test pressure
- 0.3 to 0.5 bar (Barrow usage guide)
- Scale step
- About 0.031 bar
- Connection
- G1/4"
- Hose
- 8 x 12 mm black silicone
- Valve
- Relief valve, ON/OFF
- Color
- Black
- Pieces in the pack
- 1 set
Test before you fill
Barrow made the tester for fast checks of the air tightness of a water cooling system, to reduce the risk of leaks. Because it works with air, you can test the finished loop before the first drop of coolant goes in, and fix a leaking connection without a mess.
A three color dial
The gauge reads from 0 to 1 bar. Yellow marks 0 to 0.5 bar (low pressure), green 0.5 to 0.75 bar and red 0.75 to 1 bar (over-pressure). Barrow marks the scale in steps of about 0.031 bar, so even a small drop shows.
How the test works
- Connect the tester to the loop. Barrow notes that the loop must not contain an exhaust valve or other parts that would let air out and spoil the result.
- Turn the relief valve to OFF. Barrow says OFF holds the pressure and ON releases it.
- Pump air into the loop. Barrow's usage guide says to keep the pressure between 0.3 and 0.5 bar.
- Wait 10 seconds. If the needle does not swing back, the loop is tight; if it drops, find and fix the leak and test again.
- Turn the valve to ON to let the air out, then check every connection of the loop once more.
Flexible soft hose
The pump is a small hand-operated tire-style pump. An 8 x 12 mm black silicone hose leads from the gauge block to the loop, and Barrow says the soft hose makes the tester easy to use in ATX cases and compact ITX cases alike.
Technical data
| Model | GJQM-01 |
| Type | Manual air tightness tester |
| Gauge range | 0 to 1 bar |
| Recommended test pressure | 0.3 to 0.5 bar |
| Scale step | About 0.031 bar |
| Connection thread | G1/4" |
| Hose | 8 x 12 mm silicone |
| Valve | Relief valve, ON/OFF |
| Color | Black |
Notes
- Do not pump past the range. Barrow warns that over-pressure can cause irreparable damage and can push tubes off their connections.
- The green band on the dial runs from 0.5 to 0.75 bar, but Barrow's usage guide gives 0.3 to 0.5 bar as the test pressure. Stay in the lower range and check the pressure limits of your blocks, pump top and reservoir.
- Barrow notes that it may update the look or construction of the product without notice; the product you receive is the current version.
In the box
- 1x Barrow System Pressure Leak Tester - 1.0 Bar Gauge
