TEMPERATURE CONTROL BIMETAL


Temperature Control Steam Traps are bimetallic steam traps which do not follow the steam saturation curve. The discharge temperature can be adjusted manually, which allows to adopt these steam traps to a wide range of applications, where optional undercooling is possible and where sensible heat savings and flash steam reduction are desirable.
These steam traps are perfectly fitted for reducing the steam consumption at steam main and steam tracing lines thus guaranteeing a high degree of energy savings.

Operating principle


Model TB7N


Model
Available
Sizes
Available
Connections
Maximum
Operating
Pressure
MPa (psig)
Maximum
Operating
Temperature
°C (°F)
Body and
Cover Material
Download
TB1N
1/4", 3/8"
Screwed
Rc & NPT
1,6
(230)
350
(662)
Carbon Steel
TB9N
1/2" – 1"
Screwed
Rc & NPT
Socket weld
JIS, ASME, DIN
Flanged
JIS, ASME, DIN
1,6
(230)
350
(662)
Forged Steel
TB7N
1/2" – 1"
2,1
(305)
TBC2
1/4", 3/8"
Screwed
Rc, NPT
1,0
(145)
220
(428)
Stainless Steel
TB51
1/2"– 1"
Screwed
Rc & NPT
Socket weld
JIS, ASME, DIN
Flanged
JIS, ASME, DIN

6,5
(943)
425
(800)
Forged Steel
TB52
1/2" – 1"
475
(887)
Forged Steel
TBH71
1/2"– 1"
Socket weld
JIS, ASME, DIN
Flanged
JIS, ASME, DIN
10,5
(1522)
470
(878)
Cast Steel
TBH72
1/2"– 1"
550
(1022)
Cast Steel
TBH81
1/2"– 1"
20,0
(2900)
470
(878)
Cast Steel
TBH82
1/2" – 1"
550
(1022)
Cast Steel

Features

  • All traps are equipped with the patented valve mechanism SCCV® -System
  • The SCCV® -System ensures a superior closing performance in the center of the port, greatly reduced wear of the internal parts and extended life of the trap
  • Highly efficient in energy conservation - eliminates virtually 100% of steam loss
  • Continuous discharge of the condensate according to the adjusted temperature - not influenced by inlet pressure changes
  • Inline repairable - easy and quick replacement of the bimetal unit and the seat
  • Readjustment possible while the trap is in operation (for low pressure applications);
  • All traps equipped with integral strainer
  • Can be installed both horizontally and vertically

Suitable for:


TB7N

Steam main lines and tracing lines, low and medium pressure applications


TB9N

Steam main lines, tracing lines, low and medium pressure applications


TBC2, TB1N

Steam tracing lines, low pressure applications


TB51/TB52 and
TBH71/72/81/82


High pressure steam main lines, high pressure applications

Operating principle:

cold-condensate cold condensate hot-condensate hot condensate


TB7_flow_1


TB7_flow_2


TB7_flow_3


TB7_flow_4




On start-up, the bimetal discs are all flat and the valve shaft is up with the valve fully open. Virtually all cold condensate and air are discharged.


As the temperature of the condensate increases, the bimetal discs begin to curve gradually and force the valve shaft and the valve holder to move down.
Most of the condensate is still discharged quickly, since the valve and the holes in the fixed guide on the valve seat are still fully open.


When condensate with higher temperature (near to set temperature) flows in, the bimetal discs are curved even more and at the same time the valve shaft moves down and the valve holder closes the holes in the guide partially.
The amount of condensate being discharged is reduced quickly. This prolongs the time that the hot condensate stays near the bimetal discs and the heat of the condensate is transferred to the bimetals much more effectively.


In case of very low condensate flow, the holes in the guide are closed completely by the valve holder and the valve will close precisely in the center of the seat. Normally, the trap is filled with hot condensate and the operation will rest in the state shown in figure 3. Condensate will be discharged continuously at a stable temperature (very close to the set temperature).