ROTHENBERGER ROTEST GW Professional Pressure and Leakage Measuring Instrument up to 20 bar

On a busy construction site, a plumber needs to confirm that a newly installed heating circuit is completely sealed before the floor screed goes down. The ROTHENBERGER ROTEST GW Professional Pressure & Leakage Measuring Instrument makes this verification straightforward. This robust unit combines a precision pressure gauge and a leakage volume scale in one portable device. Use the integrated hand test pump to pressurise the system up to 20 bar, then watch the analogue display to detect even the smallest drop in pressure or volume loss. The clear scale shows both bar and psi, while the 0–150 ml leakage volume scale with 1 ml resolution reveals tiny leaks that other methods might miss. The supplied 1.5 m connection hose with R 1/2" thread and adapter connects quickly to water, heating, solar, compressed air, and oil installations. A high-impact plastic case protects the precision mechanics on site, and the accuracy class 1.6 gauge ensures reliable readings every time.

Key specifications

• Measurement type: pressure and leakage volume
• Max. operating pressure: 20 bar (2 MPa / 290 psi)
• Pressure gauge accuracy class: 1.6
• Leakage volume scale: 0–150 ml, resolution 1 ml
• Test medium compatibility: water, oil, glycol, compressed air
• System compatibility: water, heating, solar, compressed air, oil installations
• Integrated hand test pump
• Connection hose: R 1/2" (G 1/2") with adapter, length 1.5 m
• Housing: high-impact plastic case
• Display: analogue pressure gauge and volume scale
• Pressure units: bar, psi

Why choose it

This instrument delivers dependable leak detection with a simple, rugged design. The integrated pump eliminates the need for external pressure sources, and the combined pressure/volume display gives you a complete picture of system integrity at a glance. Its accuracy class 1.6 gauge and 1 ml volume resolution make it suitable for professional commissioning and maintenance tasks. The high-impact plastic case withstands the rigours of daily site use, while the versatile hose and adapter set allow quick connection to a wide range of installations.

Ideal use cases

• Pressure testing of water and heating pipes before screeding or wall closure
• Leak detection in solar thermal systems
• Verification of compressed air lines for tightness
• Commissioning and servicing of oil installations
• Quality control in plumbing and HVAC installations

Good to know

The ROTEST GW Professional is suitable for use with water, oil, glycol, and compressed air. The analogue display requires no batteries, so it is always ready for use. The 1.5 m hose with R 1/2" thread and adapter provides flexibility during testing. The device is designed for operating temperatures from 0°C to 50°C and can be stored from -20°C to 60°C.