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Steam Traps and steam equipment » Ball float & thermostatic LFT 441

The Float Trap is probably the oldest on the market and even today it finds a fairly widespread use.

With regard to construction, there are several minor variations, but the operating principle is always the same.

The principal advantage of the float trap is, that it discharges all condensate as soon as it presents itself, independent of its temperature. The main inherent disadvantage is that it will not discharge air. As a result this trap has to be provided with an air vent, to be opened periodically, particularly during start-up.

However, very often these valves are either forgotten to be opened, or to be closed, thus resulting in flooded heat exchangers, or in a considerable loss of live steam.

Frequently a float traps is therefore provided with an automatic air vent e which, in fact, is a secondary trap of the thermostatic type.

Ball float and thermostatic steam traps LFT 441
Other Ball float thermostatic steam traps:
Ball float & thermostatic LFT 441 Ball float & thermostatic LFT 442 Ball float & thermostatic LFT 443 Ball float & thermostatic BF G600 Ball float and thermostatic steam traps LFT 441

CDB ENGINEERING SPA
 

Tel. +39 0377 912268/5

Fax +39 0377 910668

Email info@cdbengineering.com

Limiting Conditions
RatingANSI 300
PMA50 bar
TMA410°C
Max Differential Pressure (Barg)4,5 - 10 - 14 - 21 - 32
Sizes
1/2" - 3/4" - 1"
Connections
ScrewedASME B1.20.1 (NPT) BS21 (BSP)
Socket weldASME B16.11
FlangedASME B16.5/UNI/DIN

Main Features:

Excellent air venting by thermostatic air vent

Discharge condensate at steam temperature

Operates with saturated and superheated steam

Suitable for heavy condensate load

Simple and reliable construction

Ordering Information:

Inlet pressure

Back pressure

Operating temperature

Condensate load

End connections

FLOW RATE CAPACITY (Kg/h)
DNDP MAX Bar (PSI)Differential Pressure
0,340,691,382,763,454,55,526,98,621012,4142127,632
154,5 (65)182236318432454522         
10 (145)125173241327365410454490570626     
14 (200)91132182259291318363409464499563590   
21 (300)506691127143159181195218236263277318  
32 (464)30415571809198114127136150156182193200
204,5 (65)182236318432454522         
10 (145)125173241327365410454490570626     
14 (200)91132182259291318363409464499563590   
21 (300)506691127143159181195218236263277318  
32 (464)30415571809198114127136150156182193200
254,5 (65)7499991385190722702361         
10 (145)3955687501067118113621453158917711862     
14 (200)29136456872781890899911581263131713721408   
21 (300)182237318432454523727840918977106711351272  
32 (464)125173241327364409454491568627654681818908931
PosDescriptionMaterialsMaterialsSpares
1BodyASTM A216 WCBASTM A351 CF8M 
2CoverASTM A216 WCBASTM A351 CF8M 
3GasketSW 316/GraphiteSW 316/GraphiteX
4Valve AssemblySS 316LSS 316LX
5Ball floatSS 316LSS 316LX
6Thermostatic air ventSSSSX
7BoltingB7/2HB8/Gr8 
Ball float and thermostatic steam traps LFT 441
Size (inches)L1H1H2

   L (flgd)          L (sw or scrw.)

Weight (Kg)
1/2"140555515011
3/4"140555515011
1"1901107516015
Dimensions: A, B, C, S are in millimeters (mm)

11/02

Installation:

The trap should be installed with the float arm in horizontal plane. Must be fitted below the drain point of the equipment.

Isolating valve should be installed upstream and downstream of the trap for safe maintenance.

Always open isolation valve slowly until normal operating conditions are achieved to avoid system shocks.

Maintenance:

The trap can be maintained without disturbing the piping connections. Ensure that trap is isolated upstream and downstream before attempting to dismantle it. Allow the trap to cool before dismantling.

Item 3 (gasket), 4-5-6 (valve assembly), 7 (ball float) and 8 (air vent) can be replaced bring the traps as new conditions.

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Address: L. Maggi, 19 - 26841 Casalpusterlengo (LO) Italy

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