GB-2
Checking the usage
TC
Tightness control for checking two safety valves be-
fore and after burner run, with adjustable measure-
ment time for adjustment to different test volumes, 
leakage rates and inlet pressures. The TC is used in 
industrial thermoprocessing equipment, on boilers 
and on forced draught burners.
TC 1, TC 2
For gas solenoid valves, quick opening or slow open-
ing with start gas rate.
TC 3
With fitted auxiliary valves for quick or slow opening 
gas solenoid valves as well as for motorized valves.
This function is only guaranteed when used within the 
specified limits– see page10 (Technical data). Any 
other use is considered as non-compliant.
Type code
Code Description
TC Tightness control
V 
C 
 
For attachment to valVario 
For attachment to CG 
For quick opening individual valves 
For quick or slow opening valves
R 
N
With Rp internal thread 
With NPT internal thread
05 p
u max.
 500 mbar
 
W 
Q 
K
Mains voltage: 
230VAC, 50/60 Hz 
120VAC, 50/60 Hz 
24VDC
/
 
W 
Q 
K
Control voltage: 
230VAC, 50/60 Hz 
120VAC, 50/60 Hz 
24VDC
Part designations
TC 1V
TC 2
TC 3
p
z
2 
2 
1 
1 
2 
4 
5 
3 
4 
1 
5 
3 
4 
1 
4 
2 
3 
  TC 1V
   Connectors
   5 x M16 cable glands
4  2 x O-rings
TC 1C
2 
1 
5 
3 
4 
  TC 1C for combination controlsCG
   1 x adapter 
2 x O-rings 
2 x retaining screws
   Connectors
4   5 x M16 cable glands
5  2 x O-rings
TC 2
p
z
2 
1 
5 
3 
4 
   TC 2 for solenoid valves
   1 x adapter 
2 x O-rings 
2 x retaining screws
   Connectors
4   5 x M16 cable glands
5  2 x O-rings
TC 3
1 
2 
4 
5 
3 
  TC 3
   Auxiliary  valves
  Valve block
4   5 x M16 cable glands
5   1 x screw plug