Honeywell TC Series Technical Information page 5

Application
TC 2 and TC 4
Tightness controls TC 2 and TC 4 can be used with gas
solenoid valves of any nominal size, which are quick
opening or slow opening with start rate. It is possible to
conduct a tightness test on pneumatically operated or
slow opening valves without start rate by using addi-
tional auxiliary valves.
Slow opening motorized valves VK up to DN 65 which
are directly flanged together can also be checked by
TC 2 and TC 4 within a temperature range of 0 to 60°C
(32 to 140°F).
An adapter plate is provided for installation of the TC 2.
TC 3
Tightness control TC 3 is a universal device for quick
and slow opening gas solenoid valves of any nominal
size as well as for motorized valves. The tightness test is
carried out with the valves installed in TC 3.
TC · Edition 08.17
TC 4
Tightness control TC 4 consists of detection circuitry
and can be installed in the control cabinet, separately
from the system. An external pressure switch takes
over the mechanical pressure test between the valves.
Tightness control TC 4 is independent of gas type and
inlet pressure p and can be used for a test period of up
u
to 10 minutes with a large test volume.
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