Ball Float Steam Trap

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Description

 The Ball Float steam Trap is a float operated steam trap available with an integral steam lock release facility. It is available with horizontal connections or with vertical connections with flow downwards.

AS an option automatic air vent can be added and used as a steam lock release.

For venting air in batch operations

Available sizes & Pipe connections

15, 20 & 25 NB screwed BSPT/NPT in CI.

15, 20, 25, 40 & 50 NB Screwed BSPT/NPT/ Socket

Weldable to ANSI B 1611/& Flanged ANSI B 16.5 class 150.300.600

BS Table H,J,K,R; in CS

Available types & Limiting Conditions

UFT 10- CI/ UFT 20 – CS TV with Thermostatic air vent

UFT 10 – CI C Combined TV & SLR.

UFT CI/UFT 20 – CS S with SLT only

Maximum Operating Conditions:

Optional set of Internals for UFT Traps:

Main Features

These traps are available in cast iron, Graphite iron or steel bodies with SS internals. They can be supplied with IBR certificate in steel body design on request.

UKL BFTS are made in all standard sizes and with different sets of internals to suit a variety of operating conditions.

These traps are designed to eliminate float damage caused by impingement of condensate on the float.

Steam Lock Release facility is available as a standard feature with BFTs to take care of processes operating on batch cycle.

For traps likely to face air binding problem we have thermostatic air vent as an add-on option.

Installation:

The trap must be fitted with the float arm in a horizontal plane so that it rises and falls vertically Therefore the arrow on the name plate must point downwards.

The UFT – 10/20 C is Supplied with the steam lock release (SLR)set in the bleed Position. The unit should be screwed clockwise to close.

Traps can be supplied with vertical connections with flow from top inlet to bottom outlet or horizontal connections.

The UFT – 10/20 S has to be opened at the time of start up to avoid steam locking of the trap.

For referring the capacity charts, please note Following:

● Select the model of UFT based on P/T range and MOC

● Select flow capacity on y axis of the chart for selected model

● Work out actual differential pressure across the UFT

● Consider all possible pressure losses in the lines.

● Select diff. pressure on x axis

● Move horizontally on Y axis and vertically on X axis

● the point of cross section will give you the trap size required

Trap Operation

The Ball Float Trap has a stainless steel float that rises on liquid level modulating on the rate of condensate in-flow. The float movement is transferred to the lever mechanism to draw away or push towards valve seat for opening and closing of the valve respectively. S separate port is provided for SLR and TV to let out steam or air when the locking occurs.

The set of float and lever assembly is designed with different options to choose from, depending on the differential pressure available across the trap. This assembly is interchangeable for each size of the trap.

UKL BFTs are designed to prevent direct impingement of the condensate on ball float which may cause extensive damage to the float and may eventually lead to trap failure.

These traps are meant for horizontal installation to ensure that the float movement is in vertical plane.

A separate adequately sized strainer is recommended to ensure that the float movement is in vertical plane.

A separate adequately sized strainer is recommended to be installed with these traps. This will ensure that the dirt particles, so commonly found in plant condensate, will not clog the critical orifices dictating the flow of fluids.