Thermostatic Steam Traps

Thermostatic Steam Traps

Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C.

Information:

Thermostatic Steam Traps:

Thermostatic steam traps reduce start-up times and improve overall efficiency. Balanced Pressure Thermostatic Traps use a special bellows diaphragm. The diaphragm is designed to open in response to pressure and temperature to discharge air and condensate, and to close against passage of steam. The temperature at which a Thermostatic Trap opens is variable, but is 10° to 30°F below saturated steam temperature for the existing pressure. This type of trap is small, simple in construction, size and weight, and has adequate capacity for various applications, especially in low-pressure heating systems.

Operation of Thermostatic Traps:

Thermostatic traps are normally open allowing fast venting of air during start-up. During start-up, cold condensate drains through the trap. As temperatures reach 10° to 30°F of saturation, the thermostatic bellows element closes the trap. During operation, thermostatic traps find an equilibrium point to drain condensate approximately 10° to 30°F below saturation at continuous flow.

Characteristics of Thermostatic Traps:

  • Sub-cools condensate usually 10° to 30°F.
  • Normally open at start-up to provide fast air venting.
  • Follows steam saturation curve to operate over wide range of conditions.
  • Self-draining.
  • Energy efficient.
  • Fast response to changing conditions.
  • Fail mode is open.
  • Water hammer can damage bellows.
  • Superheat can damage bellows if it exceeds trap temperature rating.
  • Cooling leg required in some applications.

Primary Applications of Thermostatic Traps:

  • Radiators, convectors, unit heaters.
  • Cooking kettles.
  • Sterilizers.
  • Heating coils.
  • Tracer lines.
  • Evaporators.

Features and Benefits:

  • Brass bodies provide resistance to moderate water hammer and chemical attack.
  • Stainless steel Dura-Statâ modules are easily replaced without disturbing piping connections.
  • Compact size reduces installation space requirements.
  • Inexpensive purchase price.
  • Range of seat pressures available – up to 125 psig.
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  • 401542 Hoffman Steam Trap 17C-A-2-25 - 1/2" with Short Nipple
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    401542 Hoffman 17C Thermostatic Angle Steam Trap w/Short Nipple

    Hoffman

    $78.95
    401542 Hoffman Specialty 17C-A-2 Thermostatic Angle Steam Trap w/Short Nipple.  Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction...
    $78.95
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  • 401545 Hoffman 17C-SV-2-25 Swivel Thermostatic Steam Trap 1/2"
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    401545 Hoffman 17C-SV-2-25 Swivel Thermostatic Steam Trap 1/2"

    Hoffman

    $91.95
    401545 Hoffman 17C-SV-2-25 Swivel Thermostatic Steam Trap 1/2". Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic...
    $91.95
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    401536 Hoffman Thermostatic Trap 17C-A 2-25 Angle 1/2"

    Hoffman

    $68.95
    401536 Hoffman Thermostatic Trap 17C-A 2-25 Angle 1/2". Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic Steam...
    $68.95
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  • 402006 Hoffman 17C-A-3-25 Angle 3/4" Thermostatic Trap
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    402006 Hoffman 17C-A-3-25 Angle 3/4" Thermostatic Trap

    Hoffman

    $109.95
    402006 Hoffman 17C-A-3-25 Angle 3/4" Thermostatic Trap. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic Steam...
    $109.95
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  • 401551 Hoffman 17C-V 2-25 Vertical 1/2" Thermostatic Steam Trap
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    401551 Hoffman 17C-V 2-25 Vertical 1/2" Thermostatic Steam Trap

    Hoffman

    $95.95
    401551 Hoffman 17C-V 2-25 Vertical 1/2" Thermostatic Steam Trap. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman...
    $95.95
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  • 402012 Hoffman 17C-A-4-25 Angle 1" Thermostatic Trap
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    402012 Hoffman 17C-A-4-25 Angle 1" Thermostatic Trap

    Hoffman

    $164.95
    402012 Hoffman 17C-A-4-25 Angle 1" Thermostatic Trap. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic Steam...
    $164.95
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  • 402005 Hoffman Angle Thermostatic Steam Trap 9C-A-4-125 1"
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    402005 Hoffman Angle Thermostatic Steam Trap 9C-A-4-125 1"

    Hoffman

    $199.95
    402005 Hoffman Angle Thermostatic Steam Trap 9C-A-4-125 1" Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic...
    $199.95
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  • 402011 Hoffman 17C-S-3-25 Straightaway 3/4" Thermostatic Trap
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    402011 Hoffman 17C-S-3-25 Straightaway 3/4" Thermostatic Trap

    Hoffman

    $122.95
    402011 Hoffman 17C-S-3-25 Straightaway 3/4" Thermostatic Trap. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman Thermostatic...
    $122.95
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  • 402004 Hoffman Straight Away Thermostatic Steam Trap 8C-S-3-125 3/4"
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    402004 Hoffman Straight Away Thermostatic Steam Trap 8C-S-3-125 3/4"

    Hoffman

    $181.95
    402004 Hoffman Straight Away Thermostatic Steam Trap 8C-S-3-125 3/4" Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction Manual Hoffman...
    $181.95
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  • 402002 Hoffman Thermostatic Radiator Trap 1/2" Angle Pattern
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    402002 Hoffman Thermostatic Trap 1/2" Angle Pattern

    Hoffman

    $172.95
    402002 Hoffman Thermostatic Radiator Trap 1/2" Angle Pattern 8C-A-2-125 Angle. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction...
    $172.95
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    $172.95
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  • 402003 Hoffman Thermostatic Steam Trap 3/4" Angle Pattern
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    402003 Hoffman Thermostatic Steam Trap 3/4" Angle Pattern

    Hoffman

    $124.95
    402003 Hoffman Specialty Radiator Trap 8C-A-3-125 - 3/4" Angle Pattern Thermostatic Trap. Information: Hoffman Specialty General Catalog Hoffman Specialty Service Parts Catalog Hoffman Thermostatic Steam Traps Series 8C, 9C & 17C Instruction...
    $124.95
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