Description
TL;DR: The GJQM-01 is a manual, pressure-based leak tester that lets you commission a custom water-cooling loop dry, before adding any coolant. The tool screws into any free G1/4 port on the loop, and a small piston pump on the body lets you hand-pressurize the closed system to between 0 and 1.0 bar...
The GJQM-01 is a manual, pressure-based leak tester that lets you commission a custom water-cooling loop dry, before adding any coolant. The tool screws into any free G1/4 port on the loop, and a small piston pump on the body lets you hand-pressurize the closed system to between 0 and 1.0 bar (about 15 psi). The dial face is color banded: 0 to 0.5 bar yellow, 0.5 to 0.75 bar green (typical test window), and 0.75 to 1.0 bar red. Resolution is 0.031 bar. The body is acetal (POM) with a silicone hose and a built-in relief valve so the loop cannot be over-pressurized in normal use.
Q: How does the GJQM-01 detect leaks?
A: You seal it into a G1/4 port on a closed, empty loop, hand-pump pressure into the green band on the gauge and watch. If the needle drops over a few minutes, the loop is leaking somewhere.
Q: What is the maximum test pressure?
A: 1.0 bar (about 15 psi). The recommended test window is 0.5 to 0.75 bar.
Q: What fitting size does it use?
A: G1/4 thread, the same as standard PC water-cooling fittings.
Q: What pressure resolution does the gauge have?
A: 0.031 bar per graduation.
Q: What is it made of?
A: An acetal (POM) body with a silicone hose and a nickel-plated G1/4 connector. A pressure-relief valve is built in.