Testing Equipment
Precision Pressure & Vacuum Control For Testing Equipment
Built on high-accuracy proportional pressure regulators, electric needle valves and 24-bit PID control, we deliver repeatable, programmable solutions for leak testing, burst testing, sensor calibration and environmental simulation. Our solutions help test equipment builders improve measurement confidence while simplifying system integration.
01 SolutionWhy Our Testing Solutions
A test result is only as reliable as the pressure behind it. Test benches must reach setpoints quickly, hold them without drift and record every value for traceability. Conventional on-off valves, pump start-stop control and controllers without PID feedback cause fluctuations that grow as pressure approaches one atmosphere. Kao Lu designs its proportional valves and controllers in-house, so each test system can be matched to its pressure range, media and control signal.
Engineered for Repeatability, Built for Traceable Results
QKL electronic proportional pressure regulators cover 1 to 65 bar at 0.1% F.S. accuracy, and the QKL-B4H reaches 100 bar with a 200 ms response. For low-pressure leak tests, our 2025 German Design Award-winning high-resolution regulators achieve ±0.005% F.S. resolution and ±0.02% F.S. repeatability. Analog monitor outputs and RS485 Modbus feed results directly to the test controller, and QKL units are drop-in replacements for common Proportion-Air, Festo, SMC, Clippard and Aventics models.
02 Application examplesLeak, Burst & Calibration Testing
In inkjet cartridge leak testing, the regulator pressurizes the part, a shut-off valve isolates it and the controller records pressure decay. In catheter burst testing, the analog monitor output captures the exact burst pressure, and tire uniformity testers use the same regulators to seat the bead and hold test pressure. For calibration, a portable vacuum gauge calibrator holds ±1% stability from 0.1 to 760 Torr, while an upgraded radiosonde simulation chamber improved pressure stability more than five times across 1 to 760 Torr.
03 ConclusionA Test-Ready Partner in Pressure & Flow Control
We deliver application-oriented solutions that turn test pressure into reliable, recordable data. By combining proportional regulators, dual-channel PID controllers with 24-bit resolution and electric needle valves for upstream and downstream control, we help test equipment builders, laboratories and quality teams achieve repeatable results, from component leak tests to the growing leak-tightness requirements of electric vehicle battery packs and cooling systems. Our engineers support you from test design to production line.