172-65191MA-03 (RT3A) 28 Apr 2009
4
Checking the Piping
Use only under conditions in which no water hammer will occur. The
impact of water hammer may damage the product, leading to fluid
discharge, which may cause burns or other injury.
CAUTION
Check to make sure that the pipes to be connected to the trap have been installed
properly.
1. Is the pipe diameter suitable?
2. Has sufficient space been secured for maintenance?
3. Have isolation valves been installed at the inlet and outlet?
If the outlet is subject to back pressure, has a check valve (TLV-CK) been
installed?
4. Is the inlet pipe as short as possible, with as few bends as possible, and installed
so the liquid will flow naturally down into the trap?
Operation
Principles of Steam and Condensate Discharge
1.
At
start-up, temperatures are low so the thermo-
element (A) is contracted, holding the valve open
and allowing the rapid discharge of initial
air and
condensate.
2.
After the discharge of initial condensate, the
temperature of the condensate rises. When it reaches
approximately 100 °C (212 °F), the thermo-element
(A) expands, causing the valve to close.
3. After the valve closes, condensate at approximately
95 °C (203 °F)and below accumulates, causing the
thermo-element (A) to contract again, opening the
valve and discharging the accumulated condensate.
4. When the condensate temperature rises to over
approximately 100 °C (212 °F) again, the valve closes
as in step 2 above.
Condensate
Steam
