f&t Product Bulletin

8/12/2019 f&t Product Bulletin

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Float & Thermostatic Steam Trapsfor efficient condensate drainage of industrialprocess and HVAC equipment


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Key features Key reasons Key benefits

Stainless Steel float Rugged, corrosion resistant,shock and surge resistant.

Automatically adjusts the valveopening to maintain a continuouscondensate flow. Low lifetimefailure rate.

Unaffected by back

pressure

Trap only requires differentialpressure to operate. Infinite turn down

on both pressure and flow.

Operation is regulated solely bycondensate level inside the trap,which allows the trap to drainprocess equipment effectivelyunder varying demands.

Easy to service Trap has either bolted coveror universal connection.

All internal parts can be servicedwithout disturbing the pipingconnections.

Withstands

waterhammer

and superheat

Stainless steel balanced pressurethermostatic air vent.

Withstands waterhammerand steam temperatures upto 572 F.

Stainless Steel

valve trim

Corrosion resistant,hardened valve head.

Long wear life.

No steam leakage Maximum thermal efficiency,but drains condensate assoon as it forms.

Condensate seals the valve at alltimes, preventing steam leakage.

Key features and benefits


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Model Sizes Body Material Connections Piping Configuration Options TI# Maximum Operation Pressure

FT14-4.51" HC,

1-1/2", 2"

Cast Iron (1"),Ductile Iron

(1-1/2" & 2")NPT In-line horizontal

SLR withair vent

TI-2-320 US 65 psig

FT14-101" HC,

1-1/2", 2"



SLR withair vent

TI-2-320 US 145 psig

FT14-141" HC,

1-1/2", 2"



SLR withair vent


FT14 and FT14C

The FT14 features rugged cast iron (1") or ductile iron (1-1/2" and 2") construction for pressures up to 200 psig. The conven-

ient in-line connections allow for servicing of all trap internals without removing the trap from the pipeline. The stainless steel

air vent, float, and valve eliminate air binding, resist corrosion and allow for continuous drainage of condensate.


IFT14-4.5FT14-4.5C

1/2", 3/4" Ductile Iron NPT In-line horizontalSLR withair vent

TI-2-320 US 65 psig

IFT14-10FT14-10C



IFT14-14FT14-14C



IFT14 and FT14C

The IFT14 1/2" & 3/4" sizes offers a compact Float & Thermostatic steam trap with in-line flow designed for horizontal or

vertical piping. The rugged ductile iron construction is suitable for pressures up to 200 psig and capacities to 1,000 lb/hr. The

stainless steel air vent, float, and valve eliminate air binding, resist corrosion and allow for continuous drainage of condensate.

IFT-14, FT14 & FT14C Capacities

Differential Pressure, psi

Condensate, lb/h

For complete capacity data,

see TI-2-306-US.


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FTB-20 2" Cast Iron NPT ParallelIntegral Vacuum Breaker

Gage GlassTI-2-315 US 20 psig

FTB-30 2" Cast Iron NPT ParallelIntegral Vacuum Breaker


FTB-50 1-1/2" Cast Iron NPT ParallelIntegral Vacuum Breaker


FTB-125 2-1/2"Cast Iron or

Cast Steel (2-1/2" only)NPT or

SW (2-1/2" only)Parallel

Integral Vacuum BreakerGage Glass

TI-2-315 USTI-2-322 US

125 psig

FTB-1752",

2-1/2"Cast Iron

NPT orSW (2-1/2" only)

ParallelIntegral Vacuum Breaker


FTB-2001-1/2" Cast Iron NPT

ParallelIntegral Vacuum Breaker

Gage Glass

TI-2-315 US200 psig

2-1/2" Cast Steel SW TI-2-322 US

FTB

The FTB range of Super Capacity Float & Thermostatic steam traps are rugged cast iron products designed to handle large

heat exchanger condensate loads to 100,000 lb/hr. The stainless steel air vent, float, and valve eliminate air binding, resist

corrosion and allow for continuous drainage of condensate.

Condensate,

lb/h


FT450-4.53/4", 1",

1-1/2", 2"Cast Steel

NPT, SW,Flanged

In-line horizontalStainless SteelSpecial Order

TI-2-304 US 65 psig

FT450-103/4", 1",


NPT, SW,Flanged



FT450-14 3/4", 1" Cast Steel NPT, SW,Flanged

In-line horizontal Stainless SteelSpecial Order


FT450-21 3/4", 1" Cast SteelNPT, SW,Flanged



FT450-323/4", 1",


NPT, SW,Flanged



FT450 3", 4" Cast SteelNPT, SW,Flanged


TI-2-3041 US 465 psig

FT450

For processes that require pressures to 465 psig and/or steel construction, the FT450 offers the best

solution. The FT450 is available in sizes ranging from 3/4" to 4" and with threaded, socket weld or

flanged connections. The in-line design allows all internal parts to be serviced without removing the

trap from the pipeline. The stainless steel air vent, float, and valve eliminate air binding, resist corrosion

and allow for continuous drainage of condensate.

3/4"- 2" 3"& 4"

FTB 1-1/2" to 2-1/2" CapacitiesFor complete capacity data, see TI-2-317-US.

FT450 & FT46 CapacitiesFor complete capacity data, see TI-2-308-US and TI-2-3041 US (3" and 4").



Condensate,

lb/h


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OK150H 1/2"Forged steel &stainless steel

NPT or SW In-line horizontal - TI-2-312 US 150 psig

OK150V 1/2"Forged steel &stainless steel

NPT or SW In-line vertical - TI-2-312 US 150 psig

OK300H 1/2"Forged steel &stainless steel

NPT or SW In-line horizontal - TI-2-312 US 300 psig

OK300V 1/2"Forged steel &stainless steel

NPT or SW In-line vertical - TI-2-312 US 300 psig

OK150-300 and UFT Series

The UFT Series of Traps is an austenitic stainless steel maintenance free sealed ball float steam trap

with an integral automatic air venting capability. The UFT is designed for differential steam pressures

up to 465 psig. When installed with a suitable pipeline connector the UFT can easily and simply be

removed without breaking into the pipeline, thus speeding up trap replacement with minimal system

downtime. Pipeline connectors are available with screwed, socket weld and flanged end connections.


UFT14-4.51/2",

3/4", 1"*

Stainless steel NPT or SW*In-line horizontal

or vertical

- TI-P146-02 US 65 psig

UFT14-101/2",

3/4", 1"*Stainless steel NPT or SW*

In-line horizontalor vertical

- TI-P146-02 US 150 psig

UFT14-141/2",



- TI-P146-02 US 200 psig

UFT32-211/2",



- TI-P146-02 US 300 psig

UFT32-321/2",



- TI-P146-02 US 465 psig

OK150-300 and UFT Series CapacitiesFor complete capacity data,

see TI-P146-02-US.

* Connection size and connection type determined by connector type, purchased separately.

0.1 0.2 0.3 0.5 21 3 4 5 10 20 32

1.5 2.9 4.4 7.3 2914.543.5

5872.5 145

290

992

110

682

882

220

441

88

68

44

22

450

300

200

400

100

5040

30

20

10

5.4-41TFU

01-41TFU

41-41TFU 12-23TFU

23-23TFU

Pressure (psig)

Condensate

lb/hr

Condensate

kg/hr

Pressure (barg)

OK-150 and OK-300 Inlet Pressure

psig 10 25 50 150 200 300

OK150 300 420 540 800 - -

OK300 145 200 260 400 440 510


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FTS14-4.51/2",3/4"

Stainless SteelNPT, socket weld,

end, tri-clampIn-line horizontal

or verticalInternal Strainer TI-P145-01 US 65 psig

FTS14-101/2",3/4"




FTS14-141/2",3/4"




FTS14 and FT46

The FTS14 and FT46 Float & Thermostatic steam traps are designed for clean steam and other sys-

tems requiring stainless steel construction. These traps are available with convenient in-line connec-

tions for ease of maintenance and either flanged (FT46) or threaded (FTS14) connections. The stainless

steel air vent, float, and valve eliminate air binding, resist corrosion and allow for continuous drainage

of condensate.

FTS14 CapacitiesFor complete capacity data, see TI-2-317-US.

See FT450 capacities for FT46.


FT46-4.51/2",

3/4", 1",1-1/2", 2"

Stainless Steel Flanged In-line horizontal3/8" NPT

drain connectionTI-2-318 US 65 psig

FT46-10

1/2",

3/4", 1",1-1/2", 2" Stainless Steel Flanged In-line horizontal

3/8" NPT

drain connection TI-2-318 US 145 psig

FT46-141/2",

3/4", 1",1-1/2", 2"



FT46-211/2",

3/4", 1",1-1/2", 2"



Differential Pressure (psig)

lb/hr flow

Condensate kg/h

Differential pressure bar (x 100 = kPa)


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How Float and Thermostatic Traps work

On start-up, air in the system is quickly discharged through the integral thermostatic air vent (1). When condensate reaches

the trap it raises the float to open the main valve. Cool condensate is discharged through both the main valve and the

air vent (2). When the trap reaches operating temperature the air vent closes and condensate at steam temperature is

discharged continuously through the main valve. The opening of the main valve is regulated by the condensate level in the

trap so that condensate never backs up into the inlet piping.Air which accumulates in the trap during operation is periodically discharged through the thermostatic air vent.

Certain models can be supplied with a steam lock release (SLR) which provides an adjustable steam bleed (3). An SLR should

be specified whenever the piping arrangement may permit the formation of a steam pocket which can prevent condensate

from reaching the trap.

ApplicationsSteam SeparatorWet steam can damage equipment and reduce process

efficiency. A Spirax Sarco separator efficiently knocks

out condensate droplets in the steam flow. If condensate

is not drained continuously from the separator, it could be

re-entrained in the steam flow. Because of its continuous,

modulated discharge, a Spirax Sarco Float & Thermostatic

steam trap is ideal for this application.

Steam Unit HeaterIf condensate backs up into the heater, the heat output

will be reduced and corrosion could occur at the steam-

condensate interface. The steam trap must react instantly

to large variations in load. Steam unit heaters must be fitted

with a Float & Thermostatic steam trap; no other type has all

of the required performance characteristics.

1. 3.2.


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ApplicationsSteam Main DripTo remove the condensate which always forms in steam

distribution mains, a drip point must be installed at every

low point and every two or three hundred feet in horizontal

runs. An equal tee ensures that condensate flowing along the

bottom of the main will fall into the collecting leg. The Float &

Thermostatic steam traps air vent efficiently eliminates the

air which is present at start-up.

Steam Lock ReleaseWhen condensate must be lifted to the trap or when the trap

must be located some distance from the equipment, the

inlet piping may become filled with steam which prevents

condensate from reaching the trap. A steam lock release

(optional on certain Float & Thermostatic models) allows the

locked steam to be bled off to the return line. Please consult

Spirax Sarco for details.

Air Handling CoilFor accurate temperature control and prevention of freezing,

waterhammer and corrosion, the coil must be kept entirely free

of condensate and air. Because of its air handling ability, its

instantaneous response to variations in condensate load and

pressure, and its continuous operation, a Float & Thermostatic

steam trap is the only type acceptable for this application.

For critical installations, two traps, each of which can handle

the full load, should be fitted in parallel. When the condensatereturn system is not pressurized, the traps should be mounted

as far as possible directly below the coil to provide

a hydrostatic head to assist in drainage.

Stall ConditionsSufficient pressure must always be present at the steam

trap inlet to overcome any back pressure caused by a

pressurized return line or a lift after the trap. The system will

stall whenever the control valve reduces the steam space

pressure below the required amount.

If this condition is a possibility, a Spirax Sarco Pressure

Powered Pump should be installed. The Pressure Powered

Pump uses steam at full line pressure to force condensatethrough the steam trap against the back pressure.

Complete details will be found in the Spirax Sarco

Pressure Powered Pump Product Bulletin.


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Guide to selection

1. Need to know 1.The steam pressure at the trap after any pressure drop through the control valve or equipment.

2.The distance the condensate must be lifted after the trap. Rule of thumb: 2 feet of lift equals 1 psi back pressure (approx).

3.Any other possible sources of back pressure in the condensate return system. For example:

Condensate taken to a pressurized deaerator tank or flash recovery vessel.

Local back pressure due to discharge of numerous traps close together into an undersized return.

4.Quantity of condensate handled. Obtained from:

Measurement

Calculation

Manufacturers data

5.Safety Factor that is dependent upon particular application, typical examples as follows:

Steam Mains 2:1

Tracers 2:1

Non-Modulatng 2:1

Modulating over 30 psi 3:1

Modulating under 30 psi Size trap at full load and 1/2 psi differential

Rule of thumb: Use a factor of 2 on everything except Temperature Controlled Air Heater Coils and Converters, and

Siphon Applications

2. How to size The difference between the steam pressure at the trap inlet and the total back pressure, including that due to lift after the trap,

is the differential pressure. The quantity of condensate should be multiplied by the appropriate safety factor to produce the sizing

load. The trap may now be selected using the differential pressure and the sizing load.

Note:The inlet pressure to the steam trap should never exceed the Maximum Operating Pressure (PMO) of the selected trap,

regardless of differential pressure.

3. Example A steam trap is required to drain 2,000 lb/h of condensate from a Unit Heater receiving steam at

100 psig. There is a lift after the trap of 10 ft.

1.Inlet Pressure 100 psig

Lift 10 ft. = 5 psi (approx.)

2.Therefore, Differential Pressure 100 psi - 5 psi = 95 psi

3.Quantity 2,000 lb/h

Safety Factor 2:1

4.Sizing Load 4,000 lb/h

A 1-1/2 FT-125 will handle 4,120 lb/h at 95 psi differential pressure. (See page 4.)

Shell and Tube Heat ExchangerBecause the Float & Thermostatic steam trap discharges

condensate continuously, it does not cause the heat exchanger

pressure to fluctuate by cycling open and closed. The control

valve can therefore maintain a more accurate temperature.

The automatic elimination of air and other gases improves

temperature control and reduces the possibility of corrosion.

A vacuum breaker permits condensate to drain by gravity whenthe control valve calls for sub-atmospheric shell pressures.


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Regional Hub Offices

NORTHEAST

Spirax Sarco, Inc.

7760 Olentangy River Road

Suite 120

Columbus, OH 43235

Phone: (614) 436-8055

Fax: (614) 436-8479

MIDWEST

Spirax Sarco, Inc.

1500 Eisenhower Lane

Suite 600

Lisle, IL 60532

Phone: (630) 493-4525

Fax: (630) 724-9176

MID-ATLANTIC

Spirax Sarco, Inc.

4647 Saucon Creek Rd.

Suite 102

Center Valley, PA 18034

Phone: (800) 251-7676

Fax: (800) 996-3232

SOUTHWEST

Spirax Sarco, Inc.

203 Georgia Ave.

Deer Park, TX 77536

Phone: (281) 478-4002

Fax: (281) 478-4615

SOUTHEAST

Spirax Sarco, Inc.

115 Atrium Way, Suite 118

Columbia, SC 29223

Phone: (800) 883-4411

Fax: (803) 865-0459

WEST

Spirax Sarco, Inc.

1930 East Carson Street

Suite 102

Long Beach, CA 90810

Phone: (310) 549-9962

Fax: (310) 549-7909

SPIRAX SARCO

1150 NORTHPOINT

BLYTHEWOOD, SC

t:800.883

or803.714

f:803.714

www.spiraxsarco.co

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