State Supply offer radiator steam traps from several different manufacturers, such as Armstrong and Mepco. Radiator steam traps are found on radiators, convectors, and related equipment in steam heating systems. Usually operating under 15 psi of steam or less, radiator traps often make up the largest population of steam traps in your low-pressure steam heating system. The single operating component within the radiator trap is a thermostatic element which opens to let condensed steam out and closes to prevent steam from going beyond its point of use. Radiator traps are available in several different connection sizes and operating pressures.

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Category Products

  • SKU: BC1005H
  • Ships within 2 business days

Hercules thermostatic radiator steam super trap, model 122A-ST, with a 1/2" trap connection in an angle pattern. This trap features an enhanced, stainless steel screen protected, 7-coil bellows thermostat bellows for longer lasting operation. The 122A-ST is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $64.82
Regular Price: $72.01

  • SKU: BC1010H
  • Ships within 2 business days

Hercules thermostatic radiator steam super trap, model 122S-ST, with a 1/2" trap connection in a straight pattern. This trap features a enhanced, stainless steel screen protected, 7-coil bellows thermostat bellows. The 122S-ST is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $89.25
Regular Price: $99.16

  • SKU: BC1020H
  • Ships within 2 business days

Hercules thermostatic radiator steam super trap, model 134A-ST, with a 1/2" trap connection in an angle pattern. This trap features a enhanced, stainless steel screen protected, 7-coil bellows thermostat bellows. The 134A-ST is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $103.25
Regular Price: $114.72

  • SKU: BC1025H
  • Ships within 2 business days

Hercules thermostatic radiator steam super trap, model 134S-ST, with a 3/4" trap connection in a straight pattern. This trap features a enhanced, stainless steel screen protected, 7-coil bellows thermostat bellows. The 134S-ST is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $107.32
Regular Price: $119.24

  • SKU: BC1035H
  • Ships within 2 business days

Hercules thermostatic radiator steam super trap, model 147A-ST, with a 1" trap connection in an angle pattern. This trap features a enhanced, stainless steel screen protected, 7-coil bellows thermostat bellows. The 147A-ST is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $127.39
Regular Price: $141.53

  • SKU: ID1030
  • 10 in stock
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1G, with a 1/2" trap connection in an angle pattern. The 1G is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $104.07
Regular Price: $122.99

  • SKU: ID1031
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1GLHC, with a 1/2" trap connection in a left-hand pattern. The 1GLHC is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $132.96
Regular Price: $157.13

  • SKU: ID1032
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1GRHC, with a 1/2" trap connection in a right-hand pattern. The 1GRHC is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $132.96
Regular Price: $157.13

  • SKU: ID1033
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1VG, with a 1/2" trap connection in a vertical pattern. The 1VG is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $137.22
Regular Price: $162.17

  • SKU: ID1035
  • 4 in stock
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1GHSW, with a 1/2" trap connection in a straight pattern. The 1GHSW is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $111.34
Regular Price: $131.59

  • SKU: ID1036
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1MG, with a 1/2" trap connection in an angle pattern. The 1MG is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $116.31
Regular Price: $137.46

  • SKU: ID1037
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 1MG, with a 1/2" trap connection in a straight pattern. The 1MG is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $130.47
Regular Price: $154.19

  • SKU: ID1040
  • 7 in stock
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 3GH, with a 3/4" trap connection in an angle pattern. The 3GH is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $136.47
Regular Price: $161.28

  • SKU: ID1043
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 3MG, with a 3/4" trap connection in an angle pattern. The 3MG is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $149.20
Regular Price: $176.33

  • SKU: ID1044
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 3MGH, with a 3/4" trap connection in a straight pattern. The 3MGH is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $161.96
Regular Price: $191.40

  • SKU: ID1045
  • 3 in stock
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 3GHSW, with a 3/4" trap connection in a straight pattern. The 3GHSW is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $161.74
Regular Price: $191.15

  • SKU: ID1046
  • 2 in stock
  • Ships within 4 business days

Illinois thermostatic radiator steam trap, model 5MGH, with a 1" trap connection in an angle pattern. The 5MGH is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $247.80
Regular Price: $292.86

  • SKU: MD1040
  • 10 in stock
  • Ships within 4 business days

Marsh thermostatic radiator steam trap, model 1N, with a 1/2" trap connection in an angle pattern. The 1N is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $62.03
Regular Price: $63.58

  • SKU: MD1045
  • 6 in stock
  • Ships within 4 business days

Marsh thermostatic radiator steam trap, model 1N, with a 1/2" trap connection in a straight pattern. The 1N is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $64.79
Regular Price: $66.40

  • SKU: MD1050
  • Obsolete

Marsh thermostatic radiator steam trap, model 1N, with a 1/2" trap connection in a vertical pattern. The 1N is cast bronze and has a 25 psi maximum operating pressure.

This item is obsolete. Please visit the item's page to view 4 repair parts.

Marsh thermostatic radiator steam trap, model 1N, with a 1/2" trap connection in a left-hand pattern. The 1N is cast bronze and has a 25 psi maximum operating pressure.

This item is obsolete. Please visit the item's page to view 4 repair parts and 1 alternate item.

  • SKU: MD1060
  • Obsolete

Marsh thermostatic radiator steam trap, model 1N, with a 1/2" trap connection in a right-hand pattern. The 1N is cast bronze and has a 25 psi maximum operating pressure.

This item is obsolete. Please visit the item's page to view 4 repair parts.

  • SKU: MD1065
  • Ships within 4 business days

Marsh thermostatic radiator steam trap, model 2-4, with a 3/4" trap connection in an angle pattern. The 2-4 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $95.91
Regular Price: $98.30

  • SKU: MO1005
  • 11 in stock
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 30, with a 1/2" trap connection in an angle pattern. The 30 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $54.15
Regular Price: $55.33

  • SKU: MO1010
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 34, with a 1/2" trap connection in an angle pattern. The 34 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $59.03
Regular Price: $60.31

  • SKU: MO1015
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 34, with a 1/2" trap connection in a straight pattern. The 34 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $78.81
Regular Price: $80.53

  • SKU: MO1020
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 38, with a 1/2" trap connection in an angle pattern. The 38 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $90.03
Regular Price: $91.98

  • SKU: MO1025
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 48, with a 1/2" trap connection in an angle pattern. The 48 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $154.69
Regular Price: $158.05

  • SKU: MO1030
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 52, with a 1/2" trap connection in an angle pattern. The 52 is cast bronze and has a 50 psi maximum operating pressure.

Online Price: $110.66
Regular Price: $113.07

  • SKU: MO1035
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 6-B, with a 1/2" trap connection in an angle pattern. The 6-B is cast bronze and has a 125 psi maximum operating pressure.

Online Price: $137.60
Regular Price: $140.59

  • SKU: MO1040
  • 1 in stock
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 34, with a 3/4" trap connection in a straight pattern. The 34 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $76.62
Regular Price: $78.29

  • SKU: MO1045
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 38, with a 3/4" trap connection in a straight pattern. The 38 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $96.88
Regular Price: $98.98

  • SKU: MO1050
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 48, with a 3/4" trap connection in a straight pattern. The 48 is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $154.69
Regular Price: $158.05

  • SKU: MO1055
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 52, with a 3/4" trap connection in a straight pattern. The 52 is cast bronze and has a 50 psi maximum operating pressure.

Online Price: $120.39
Regular Price: $123.00

  • SKU: MO1060
  • Ships within 2 business days

Monash thermostatic radiator steam trap, model 6-B, with a 3/4" trap connection in an angle pattern. The 6-B is cast bronze and has a 125 psi maximum operating pressure.

Online Price: $150.75
Regular Price: $154.03

  • SKU: SG1086
  • 5 in stock
  • Ships within 2 business days

Spirax-Sarco thermostatic radiator steam trap, model RTA-125, with a 1/2" trap connection in an angle pattern. The RTA-125 is cast bronze and has a 125 psi maximum operating pressure.

Online Price: $74.82
Regular Price: $89.50

  • SKU: SW1030
  • 10 in stock
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 750-A, with a 1/2" trap connection in an angle pattern. The 750-A is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $76.30
Regular Price: $86.25

  • SKU: SW1031
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 750-A, with a 1/2" trap connection in an angle pattern and stainless steel seat. The 750-A is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $111.07
Regular Price: $125.55

  • SKU: SW1035
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 770-L, with a 1/2" trap connection in a left-hand pattern. The 770-L is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $110.20
Regular Price: $124.58

  • SKU: SW1040
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 770-R, with a 1/2" trap connection in a right-hand pattern. The 770-R is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $110.20
Regular Price: $124.58

  • SKU: SW1045
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 770-S, with a 1/2" trap connection in a straight pattern. The 770-S is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $88.17
Regular Price: $99.67

  • SKU: SW1047
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 780-V, with a 1/2" trap connection in a straight pattern. The 780-V is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $129.71
Regular Price: $146.63

  • SKU: SW1050
  • 2 in stock
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 753-A, with a 3/4" trap connection in an angle pattern. The 753-A is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $107.67
Regular Price: $121.71

  • SKU: SW1055
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 973-S, with a 3/4" trap connection in a straight pattern. The 973-S is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $122.08
Regular Price: $138.00

  • SKU: SW1060
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 715-A, with a 1" trap connection in an angle pattern. The 715-A is cast bronze and has a 25 psi maximum operating pressure.

Online Price: $158.53
Regular Price: $179.20

  • SKU: SW1065
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model M-750-A, with a 1/2" trap connection in an angle pattern. The M-750-A is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $80.54
Regular Price: $91.05

  • SKU: SW1070
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model M-753-A, with a 3/4" trap connection in an angle pattern. The M-753-A is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $100.04
Regular Price: $113.08

  • SKU: SW1075
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model M-715-A, with a 1" trap connection in an angle pattern. The M-715-A is cast bronze and has a 65 psi maximum operating pressure.

Online Price: $194.13
Regular Price: $219.45

  • SKU: SW1080
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 850-A, with a 1/2" trap connection in an angle pattern. The 850-A is cast bronze and has a 125 psi maximum operating pressure.

Online Price: $84.77
Regular Price: $95.83

  • SKU: SW1085
  • Ships within 4 business days

Sterling thermostatic radiator steam trap, model 853-A, with a 3/4" trap connection in an angle pattern. The 853-A is cast bronze and has a 125 psi maximum operating pressure.

Online Price: $104.27
Regular Price: $117.87

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Category Information