Please call: +44 (0)115 950 3561

Useful Leak Specification Guidelines

Product/ComponentTest PressureLeakTest Method
WATER LEAKS/COOLING SYSTEMS1 to 2 bar4 to 7 cc/minAir pressure decay
OIL LEAKAGE (various)0.1 to 7 bar6 to 15cc/minAir pressure decay/flow
FUEL/DIESEL1 to 10 bar0.1 to 15cc/minAir pressure decay
FUEL/PETROL1 to 5 bar3.0 to 15cc/minAirPressure decay
REFRIGERATION/AIR CONDITIONING2 to 20 bar5 to 15 gm/yrTracer gas
ELECTRICAL HOUSING/CONNECTORS0.1 to 1 bar0.01 to 1cc/minPressure decay/Tracer

Bubbles to leak conversion

cc/sec (ml/sec)mm3/seccc/min (ml/min)1 cc (1 ml)2mm bubble
0.1100610 sec24 bubbles per sec
0.01100.6100 sec2 bubbles per sec
0.00110.0616.7 min4.2 secs
1×10-40.10.0062.8 hours41.9 secs
1×10-50.016×10-427.8 hours7.0 min
1×10-60.0016×10-511.6 days69.8 min
1×10-71×10-46×10-616.5 weeks11.6 hours
1×10-81×10-56×10-73.2 years4.8 days
1×10-91×10-66×10-831.8 years6.9 weeks
1×10-101×10-76×10-9318 years1.33 years

Pressure conversion chart

To convert from to (multiply by)barpsikPakg/cm2mbarPainH20mmHg
bar114.51001.021000100000401750
psi0.06916.90.0768.976896.5527.6651.72
kPa0.010.14510.0110100047.5
kg/cm20.98114.2398.141981.3598135393.52736
mbar0.0010.0150.10.00111000.40.75
Pa1E-051.4E-040.0011.02E-050.0110.0040.0075
in H2O0.00250.0360.2490.00252.49249.3811.87
mm Hg0.00130.0190.1330.00141.33133.330.5351

Leakage flow rates conversion chart

To convert from ….to (multiply by)atmcc/secm bar.l/secatmmm3/secatmcc/minatmLitre/minatmm3/minatmcu ft/yrtorr.l/sec
atm cc/sec11.0131000600.066E-0511160.759
mbar.l/sec0.987198759.230.0595.9E-0511010.75
atm mm3/sec0.0010.00110.066E-056E-081.1160.0007
atm cc/min0.01670.01716.6710.0011E-0618.60.012
litre/min16.6716.8816667100010.0011860112.67
atm m3/min1666716883166666671000000100011860119012664
cu ft/yr0.00090.00090.8960.0545.37E-055.37E-0810.0007
torr.l/sec1.3161.33131678.960.07897.89E-0514681

To find out more about how we can help you:

We build all machines in-house, applying our extensive experience in specialised test and automated handling machines to the engineering projects we undertake. We offer customer support, backup and service call-out for all projects, whatever the size.

Get in touch with us to discuss your requirements and we will be happy to offer our professional advice and visit you at your site.