KOWOVAC Vacuum leak test systems

Generals about vacuum leak testing with KOWOVAC

KOWOVAC vacuum leak testing systems allow a quick and safe leak test of welding seams in tanks, pipelines, and many other welding structures.
Also, castings can be inspected for cracks and porosity, if going through complete wall thickness. So called “bubble testing” method can be performed according to EN 1593 and ASTM E515.
Leak testing with KOWOVAC systems is performed before or instead a hydraulic pressure test if this can be done only with high expenses or if a pressure test cannot give reliable result because of too thin wall thickness.
KOWOVAC V systems and vacuum boxes are especially used for leak testing in cases where structures are accessible only from one side (tank floors) or for testing of open structures (storage tanks).
With the KOWOVAC V used method of leak testing a foaming agent is sprayed onto the test area of a welding seam or a casting part. Especially suitable for such a foaming agent is the G-FLEX leak finder – soap water should not be used for this application.
After applying the foaming agent the test area is covered with a vacuum box, fitted to the geometry of the structure, which must be tested. This vacuum box is connected with a vacuum hose to KOWOVAC V unit. After opening the valve – which is automatically done by pressing the box onto the test area – the volume under the vacuum box is evacuated within a few seconds. If there is a defect within the vacuum box, a foam hat is built up quickly, because of the streaming in air through this defect. Leaks can be determined with this method easily.
Detection limits of this method under practical testing conditions are between 0.0001 and 0.001 mbar l / s.
For safe detection of even small defects the vacuum underneath the box must be sustained for at least 30 seconds.

KOWOVAC V E.8 Leak test unit

Suction power (at 1000 mbar)
Vacuum pressure / Pressure absolute, max.
Electrical connection
Electrical power
Dimensions (WxDxH)
Weight

8.0 m³/ h (9.1 m³/ h)
850 / 150 mbar (12 / 2 psi)
230 V / 50 Hz (60 Hz)
0.35 kW (0.42 kW)
360 x 210 x 260 mm (14.2 / 8.3 / 10.2 inches)
15 kg (33 lbs)

KOWOVAC V 1.8 Leak test unit

Suction power (at 1000 mbar)
Vacuum pressure / Pressure absolute, max.
Electrical connection
Electrical power
Dimensions (WxDxH)
Weight

8.0 m³/ h (9.1 m³/ h)
850 / 150 mbar (12 / 2 psi)
230 V / 50 Hz (60 Hz)
0.35 kW (0.42 kW)
370 x 310 x 320 mm (14.5 / 12.2 / 12.6 inches)
17 kg (38 lbs)

KOWOVAC V 2.10 Leak test unit

Suction power (at 1000 mbar)
Vacuum pressure / Pressure absolute, max.
Electrical connection
Electrical power
Dimensions (WxDxH)
Weight

10.0 m³/ h (12.0 m³/ h)
850 / 150 mbar (12 / 2 psi)
230 V / 50 Hz (60 Hz)
0.37 kW (0.44 kW)
490 x 360 x 440 mm (19.3 / 14.2 / 17.3 inches)
26 kg (57 lbs)

KOWOVAC V 2.16 Leak test unit

Suction power (at 1000 mbar)
Vacuum pressure / Pressure absolute, max.
Electrical connection
Electrical power
Dimensions (WxDxH)
Weight

16.0 m³/ h (19.0 m³/ h)
850 / 150 mbar (12 / 2 psi)
230 V / 50 Hz (60 Hz)
0.55 kW (0.66 kW)
490 x 360 x 440 mm (19.3 / 14.2 / 17.3 inches)
32 kg (70 lbs)

KOWOVAC Ejector Unit

Suction power (at 5 bar operating pressure)
Vacuum pressure / Pressure absolute, max.
Operating pressure (compressed air, required)
Air consumption (compressed air)
Dimensions (WxDxH)
Weight ejector / with harness and hoses

12.9 m³/ h (215 l/min)
800 / 200 mbar (11.5 / 3.0 psi)
4 … 6 bar
28.8 m³/h (480 l/min)
280 x 80 x 110 mm (11.0 / 3.1 / 4.3 inches)
1.0 kg (2 lbs) /2.5 kg (5 lbs)

Types:

Article No.:

KOWOVAC V E.8 Leak test unit

Economic, very light weight version for normal application, indoor use only – for one operator. Small dust-/ liquid separator, cable 3 m long

60 70540

KOWOVAC V 1.8 Leak test unit

Standard, light weight version for normal application, outdoor use – for one operator. Large dust-/ liquid separator, cable 3 m long

60 70550

KOWOVAC V 2.10 Leak test unit

Power version for fast inspection, outdoor use – for one operator. Large dust -/ liquid separator, cable 5 m long

60 70560

KOWOVAC V 2.16 Leak test unit

High power version for fast inspection, outdoor use – two operator. Large dust -/ liquid separator, cable 5 m long

60 70570

KOWOVAC Ejector Unit

The KOWOVAX Ejector carried by the inspector with a harness at the right hip is connected with a hose for compressed air and a vacuum hose to the vacuum box. The ejector is maintenance free and a large silencer reduces the noise of the out streaming compressed air at the back of the inspector.

60 70900

You can find accessories on the leaflet

leaflet German:
leaflet English: KOWOVAC