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Ball Float Traps

Steam used for secondary heating like Coils, vessels, heat exchangers etc, generate a lot of condensate post heat transfer. This large quantity of condensate can handle by Ball Float Trap. This condensate has a substantial heat component with cost tagged to it. Also this is treated and pure water and can be used as Feed water for the Boiler, saving the cost of heating, Water Bill and Treatment chemicals. Therefore it makes sense to recycle / reuse this condensate. This function is also done by the Ball Float Trap.

UKL Ball Float Trap discharge condensate near to steam saturation temperature, which works on the principle of Buoyancy, [densities difference of Water and Steam].The rising condensate level elevates the Float open the valve and discharges the condensate, and reverse, when the level of condensate drops, valve close the trap.

The working principle of this trap can also be used as Auto Air Moisture Drain, as Air Eliminator in liquid line, as well as for lifting condensate, as a pump.

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Operating Animation
  • Available in Sizes: 15 mm – 100 mm
  • End connections: Screwed/Socket weld ends, Flanged ends to #150 / 300 /600
  • Available for working pressure up to 40 bar and Differential Pressure up to 32 Bar
  • Also available with Automatic Air venting [AV] and Steam lock release [SLR] arrangement

  1. UCA-15,20 & 25

    UKL Auto Drain(compressed air), moisture drain trap in Cast Iron construction as per IS 210 Gr FG260

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    15 to 2513.26 / 220Screwed - BSP/BSPT

    Diff. Pr.-4.5/10

    MOC-SS304/SS316

  2. UFT-14/20 15,20 & 25

    UKL Float type steam trap in Cast iron construction / Cast carbon steel as per IS 210 Gr FG26, ASTM A216 GrWCB

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    15 to 2513.26 / 220Screwed - BSP/BSPT

    Diff. Pr.-4.5/10

    MOC-SS304/SS316

  3. UFT-14/20 40 & 50

    UKL Float type steam trap in Cast iron construction / Cast carbon steel as per IS 210 Gr FG260, ASTM A216 Gr. WCB

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    40 & 5013.26 / 220

    Screwed-BSP/BSPT

    Flanged #150/#300

    Diff. Pr.-4.5/10/14/21/32

    MOC-SS304/SS316

    IBR/Non-IBR

  4. [High Pressure] UFT100 15-40NB

    UKL High Pressure Ball Float Type Steam Trap in Forged carbon steel construction as per ASTM A105

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    15 to 40

    100 /425 (For #900)

    80/ 425 (For #600)

    		Flanged #600/#900IBR/Non-IBR

  5. [High Capacity] UFT-20 80 & 100 NB

    UKL Float type steam trap [High Capacity] in Cast carbon steel construction as per ASTM A216 Gr.WCB

    Size  (NB)          Max. Op. Pr / Temp (kg/cm2 / oC) End connections Optional /Additional information
    80 & 10032 / 425Flanged #150/#300

    Diff. Pr.-4.5/10/14/21/32

    MOC-SS304/SS316

    IBR/Non-IBR

    Butt Weld End

As the name suggests, a Steam Trap is a device which allows Condensate to pass through it, while trapping live Steam. Steam Trap is used to drain out the condensate in steam network, formed due to heat loss or heat transfer, without live steam loss.
A steam trap does the following multiple work:
1) It Allows venting of air or non-condensable gases present in steam network(especially during start-up)
2) It Traps live steam
3) It Discharges the condensate(formed due to condensation)
It is required at one or numerous locations to,
1) Avoid water hammer in steam pipes and other equipments
2) Improve the heat transfer capabilities of equipments
3) Avoid excessive corrosion and pitting
There are 3(three) types of steam traps
1) Thermodynamic(disc) type:
Operating principle :- It works of Bernoulli’s principle (Kinetic energy/velocity)
2) Thermostatic(bellow) type
Operating principle :- It works of thermal(temperature) principle
3) Mechanical(Float and bucket) type
Operating principle :- It works of Buoyancy principle
FOS or Safety factor is related to the discharge capacity of steam trap. Every steam trap is designed to meet a predefined discharge capacity at corresponding differential pressure. But if actual rate of condensation is higher at some plant locations due to conditions of start-up or similar conditions, we must consider FOS or safety factor to meet these extra demands of condensate discharging.
Insulation of steam traps is not recommended with few exceptions However, it depends on the operating principle of steam trap. Please note, insulation means Thermal insulation
1) Thermodynamic Type : Insulating should be limited to Ice & Rain fall from top cover side only
2) Thermostatic Type : Not recommended at all
3) Mechanical Type : Float & Bucket type are mechanical traps. Not recommended for this type too

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