
Quick Start Guide Dräger PX4500
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For the installation and maintainance of gas pipes, a stress test and a tightness test according to
DVGW TRGI 2008 worksheet G600, has to be performed. For tightness and stress tests, pipings have
to be disconnected from gas-carrying lines and have to be metal-to-metal seated.
1. Tightness test (TRGI G 600) 150 mbar
Stabilisation time and measuring time at tightness tests according to TRGI G 600
2. Stress test (TRGI G 600) 1 bar (3 bar at middle-pressure systems)
Connect external pressure sensor via adapter to the gas pipe.
Stabilisation time: 2 – 10 minutes
Measuring time: 10 minutes
Middle-pressure systems: Stabilisation time 180 minutes
Measuring time: 120 minutes
For a pipe volume at middle-pressure systems over 2,000 liters, the test time has to be increased for
15 minutes each additional 100 liters pipe volume.
Liquid gas pipe tests
1. Tightness test (TRF) 150 mbar
Stabilisation time: 10 minutes
Measuring time: 10 minutes
2. Strength test (TRF) 1 bar 10 minutes at exposed liquid gas pipes
Connect external pressure sensor via adapter to the gas pipe.
Stabilisation time: 10 minutes
Measuring time: 10 minutes
3. Festigkeitsprüfung (TRF) 1 bar 30 minutes at partially earth-covered liquid gas pipes
Connect external pressure sensor via adapter to the gas pipe.
Stabilisation time: 30 minutes
Measuring time: 10 minutes
Water pipe tests
1.Tightness test with air (DIN EN 806) 150 mbar
Enter pipe volume
Stabilisation time: 2 – 10 minutes
Measuring time: 120 minutes at a volume up to 100 l
For each additional 100 l pipe volume the
test time has to be increased for 20 minutes.
2. Stress test with air up to DN50 max. 3 bar or up to DN100 1 bar (DIN EN 806)
Connect external pressure sensor via adapter to the pipe.
Stabilisation time: 2 – 10 minutes
Measuring time: 10 minutes
3. Tightness test crimped connections (untight if not crimped) with water 6 bar (DIN EN 806)
Connect external pressure sensor via adapter to the pipe.
Stabilisation time: 10 minutes
Measuring time: 15 minutes
4. Tightness test with water 11 bar (DIN EN 806)
Connect external pressure sensor via adapter to the pipe.
Stabilisation time and measuring time: Material-dependent
Pressure Volume Stabil. time Meas. time
150 mbar < 100 l 10 min 10 min
150 mbar ≥100 l < 200 l
30 min 20 min