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Free Float® Steam Traps for High Temperature, High Pressure Use

Free Float® Steam Traps for High Temperature, High Pressure Use

Overview

The JH series offers the three most important features needed in steam traps for steam-using equipment: a large condensate discharge capacity, powerful automatic air venting, and the ability to drain condensate in high pressure / temperature applications.

The use of special construction materials also makes this series perfect for processes requiring cast steel valves, even if pressure isn't of particular concern.


JH lineup

Features

Features

  • Suitable for use on high temperature, high pressure applications, up to 530 °C, 12 MPaG
  • High allowable back pressure
  • Constructed of highly erosion-resistant cast steel
  • Continuous condensate discharge for improved heating efficiency
  • Cast stainless steel models available
  • Precision-polished float and 3-point seating structure offer tight seal even under extremely low condensate loads (excluding certain models)
  • Shorter start-up time with X-element (JH-X type)
  • Built-in bimetal automatic air venting automatically discharges air at start-up (JH-B type)

Free Float®

Precision Free Float®: The Best for a Variety of Processes

Continuous condensate discharge

The Free Float® moves up and down in response to the amount of condensate inflow, automatically adjusting the amount of valve opening and continuously discharging condensate. This ensures that no condensate accumulates inside the equipment.


Free Float® Steam Traps for High Temperature, High Pressure Use

Reduced steam losses

The surface of the liquid inside the trap is maintained above a certain level and condensate is continually discharged through the orifice. Even when there is no condensate flowing into the trap, the precision Free Float® securely seals the orifice closed. This minimizes steam losses during operation.


Free Float® Steam Traps for High Temperature, High Pressure Use

Ideal for condensate recovery

In Free Float® type steam traps, the forces of the inlet pressure and the back pressure act in opposing directions, so Free Float® traps are able to operate normally even under 90% back pressure. This makes them ideally suited for processes with closed condensate recovery systems. In contrast, disc type traps only have a 50% to 80% allowable back pressure because the pressures act in the same direction.


float / disc trap pressure

Operation Animation

Continuous Discharge of Condensate & Rapid Removal of Cold and Hot Air

Operation animation

When the steam trap is cold (before steam is supplied to the equipment), the X-element is in the contracted position, so its valve is fully open. When the supply of steam begins, air and condensate are released through this valve opening. Condensate is also discharged through the main valve opening (also known as the orifice) in the lower part of the trap.

When the discharge of the initial air and cold condensate is finished, steam enters the trap causing the X-element to expand. By expanding, the X-element closes the valve where air is discharged. As condensate enters the trap, the float rises in response to the inflowing condensate load, and condensate is continuously discharged through the orifice.

When hot air enters the steam trap during operation, the X-element immediately senses the drop in temperature inside the trap and automatically opens the air-venting valve, which rapidly discharges the air. After the air has been completely discharged, the temperature again rises and the air-venting valve closes.

If there is no inflow of condensate, the float drops and is held tightly against the orifice. This seals off the main valve opening (orifice). Steam leakage is prevented at all times by maintaining a water seal over the orifice.


Applications

Applications

JH-X type

  • For steam processes up to 3.2 MPaG that require the discharge of initial air and high temperature air
  • Particularly for processes with batch operations and where condensate removal is difficult
  • Employs an automatic air vent (built-in X-element) that rapidly removes both cold and hot air
x-element

JH-B type

  • For steam processes over 3.2 MPaG that require the discharge of initial air
  • Particularly for high temperature, high pressure steam mains and steam processes
  • Employs an automatic air venting feature (built-in bimetal)
bimetal

JH-P / JH-W types

  • For steam mains and steam processes over 4.6 MPaG
  • Particularly for processes with extended, continuous operation and minimal amounts of entrained air
  • Socket weld or screwed connection available
no-auto-air-vent

Used on a Variety of High Temperature, High Pressure Steam-using Equipment

Carbon cast steel and stainless steel bodies, a shape that maximizes condensate drainage and an anti-erosion design allow JH series traps to be used with confidence on high temperature, high pressure processes in a wide variety of industries.

Examples of applications by industry

Petrochemical

  • Vaporizers
  • Concentrators
  • Heat Exchangers
  • Reactor Kettles
  • Tank Heating

Fine Chemical

  • Roll Dryers
  • Conical Dryers
  • Concentrators
  • Jacketed Mixing Tanks
  • Acetone Vaporizers
  • Purifying Kettles
  • Reactor Kettles

Food

  • Boil Pouches
  • Jacketed Kettles
  • Plate Heaters
  • Boiling Kettles
  • Bottle Washers
  • Steam Kettles

Paper

  • Corrugators
  • Triple Heaters
  • Rollers
  • Hot Plate Presses
  • Yankee Dryers
  • Paper Making Machines

Rubber

  • Presses
  • Mold Presses
  • Vulcanizers
  • Calendar Rolls
  • Hot Presses

Steel Mill

  • Smelting Furnaces
  • Pretreatment Tanks
  • Anti-rust Liquid Heating Tank

Textiles

  • Embossing Rolls
  • Cylinder Dryers
  • Roll Dryers
  • Dye Tanks
  • Hot Air Dryers

Printing

  • Roll Dryers
  • Aerofin Heaters
  • Embossing Foam
  • Printing Heaters
  • Coaters

Others (Power Generation / Electrical Equipment / Linen / Animal Feed / Building Materials / Building / Transportation)

Line-up

JH-X Type

Model Appearance Max Operating Pressure (psig) Max Operating Temperature (°F) Maximum Discharge Capacity (lb/h) Product Specifications
JH3S-X JH3S-X 450 662 1,500 187 kb
JH5SL-X JH5SL-X 2,200 181 kb
JH5RL-X JH5RL-X 190 kb
JH7RL-X JH7RL-X 9,000 194 kb
JH7.2R-X JH7.2R-X 13,000 157 kb
JH7.5R-X JH7.5R-X 30,000 167 kb
JH8R-X JH8R-X 40,000 164 kb

JH-B Type

Model Appearance Max Operating Pressure (psig) Max Operating Temperature (°F) Maximum Discharge Capacity (lb/h) Product Specifications
JH3S-B JH3S-B 450 662 1,000 187 kb
JH5SL-B JH5SL-B 650 800 1,600 181 kb
JH5SH-B 925 300
JH5RL-B JH5RL-B 650 1,600 190 kb
JH5RH-B JH5RH-B 1,150 250
JH7RL-B JH7RL-B 650 8,000 194 kb
JH7RM-B 925 1,700
JH7RH-B 1,500 1,400 163 kb
JH7.2R-B JH7.2R-B 650 6,000 157 kb
JH7.5R-B JH7.5R-B 11,000 167 kb
JH8R-B JH8R-B 15,000 164 kb

JH-P Type

Model Appearance Max Operating Pressure (psig) Max Operating Temperature (°F) Maximum Discharge Capacity (lb/h) Product Specifications
JH7RH-W JH7RH-W 1,740 986 1,000 163 kb