01925 225252

Steam Traps for Subcooled Tracing – Models M22/TM22/TS22


On initial start up the steam system, large amounts of cold condensate and air are present in the system. At this point the bimetallic strip of the delta element relaxes and fully opens the valve assembly to quickly expel the high volume of non-condensate gases and cold condensate through the discharge port.

As the element senses an increase in the condensate temperature the bimetal expands and raises the stem to modulate the flow. Just below the temperature of saturated steam the seat will close tightly to prevent live steam from discharging.


Specifically developed to make use of the latent heat or steam and the sensible heat of condensate prior to discharge for services with differential pressures to 300 PSI. The TS22 features sealed stainless steel construction, while the M22 and TM22 are completely maintainable and include integral strainers.


Max. differential pressure – 300 PSI

Max. body pressure:

M22 & TM22 – 750 PSI
TS22 – 500 PSI

Max. body temperature:

M22 & TM22 – 650F
TS22 – 750F

Line sizes

TM22 & M22 3/8″, 1/2″, 3/4″
TS22 1/2″, 3/4″
TM22 & TS22 threaded BSP or NPT socket weld M22 threaded, socket weld, flanged.


Body & Cover: M22 & TM22 Forged investment carbon steel
TS22 cast stainless steel
Nuts & Bolts Steel
Gasket: M22 & TM22 only – flexible graphite

  • Single blade element
  • Stainless steel internals
  • Built in check valve
  • Modulating discharge
  • Continuous air & CO2 venting
  • Fast start capabilities
  • No loss of live steam

TM 22

3/8"2 7/16"3"2 1/4"2 7/16"2.2lb
1/2"2 7/16"3"2 1/4"2 7/16"2.2lb
3/4"4 9/16"3 1/8"2 1/4"2 7/16"3.0llb

M 22

All4"6"3 1/4"3 1/8"2 1/4"5.5lb


All2 5/8"3 3/4"1.8lb
Capacity charts: Condensate Capacity (1b/hr) at Pressure Differential
SizePSI Differential50100150200250300
AllHot @ 50f Subcool505050505050
Hot @ 90f Subcool250250250250250250