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APT10 and APT14 Automatic pump traps for effective condensate drainage and removal

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Page 1: APT10 and APT14 Automatic pump traps - Microsoftimistorage.blob.core.windows.net/imidocs/0699p051 apt10 and apt14... · 3 t exchanger drainage APT - Automatic pump trap For over 50

APT10 and APT14Automatic pump traps

for effective condensate drainageand removal

Page 2: APT10 and APT14 Automatic pump traps - Microsoftimistorage.blob.core.windows.net/imidocs/0699p051 apt10 and apt14... · 3 t exchanger drainage APT - Automatic pump trap For over 50

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An innovative solution for effective heat

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• Compact design which contains all the equipment needed to drain or remove condensate for all load conditions.Innovative patent applied for low profile mechanism.

• Mechanisms operate with as little as 200 mm installation head from the base of the pump.

• SG iron DIN EN JS 1025 (EN GJS 400-18LT) and ASTM A395 body and cover 3.1 certifiable.Designed in accordance with DIN and ASME standards.Optional - The body and cover are available with an electroless nickel plate (ENP) finish.

• All stainless steel internals, with low profile robust stainless steel floats.

• High integrity trapped cover gasket.

• High capacity two stage trap module plus precision ball outlet check valve.The HC version has a separate outlet disc check valve.

• Low resistance swing type inlet check valve.

• Positive snap action pump mechanism with replaceable valves and seats.

• Available connections: APT10-4.5 and APT14 (not HC) Screwed BSP / NPT connections, with ½" screwedBSP or NPT motive fluid connections. The APT14 and APT14HC. Flanged PN16, ANSI 150, JIS/KS 10,with ½" screwed BSP or NPT motive fluid connections.

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Page 3: APT10 and APT14 Automatic pump traps - Microsoftimistorage.blob.core.windows.net/imidocs/0699p051 apt10 and apt14... · 3 t exchanger drainage APT - Automatic pump trap For over 50

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t exchanger drainageAPT - Automatic pump trapFor over 50 years, Spirax Sarco has been involved with the design and manufacture ofproducts for efficient condensate management. We have now developed a range ofcompact, condensate drainage systems in simple-to-install products.

The APT has been designed to remove condensate from steam heat exchangers andprocess plant under all operating conditions, and forms an integral part of thecondensate removal process. It is available in two easy-to-specify options:APT10-4.5 - for loads up to 1 500 kg/h; and APT14 or APT14HC - for loads up to 9 000 kg/h.

Compactness is the keyThe APT's are unique, from their compact size to their approved patent applied mechanisms.No other pressure operated pumps or traps in the world can offer all of the benefits shownon these pages.

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User benefits• Self-contained compact unit.

• Operates with 0.2 minstallation head from thebase of the pump.

• Convenient installation to lowmounted process equipment.

• Removes condensateunder all load conditions,even vacuum.

• Requires no electrical power -suitable for hazardousenvironments.

• High capacity in one simpleproduct package.

• Available with EN 10204 3.1certification as standard.

• Electroless nickel plated(ENP) versions available.

• Approval to ATEX.

• Spirax Sarco’s guarantee ofworldwide technical support,knowledge and service.

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1 The APT10-4.5, APT14 and APT14HC automatic pump traps operate on a positive displacement principle.Condensate enters the body through the inlet swing check valve causing the float to rise.

The float is connected to the trap mechanism via a multi-link pivot.If the upstream system pressure PS is sufficient to overcome the backpressure PB (see below),

the build up of condensate will be discharged through the opening two stage trap mechanism.In this way, the float will automatically modulate according to the rate of condensate

entering the APT, controlling the rate of opening and closure of the trap.

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5 As the condensate level fallswithin the main chamber, the float

re-engages the change over linkage,causing the motive inlet to closeand the exhaust valve to open.

6 As the pressure inside the APTequalises with the condensate inlet

pressure through the open exhaust valve,condensate re-enters via the inlet swing

check valve. At the same time, the outletball check valve or the disc check valve (HC)

ensures no condensate can drain backinto the main chamber and the trapping

or pumping cycle begins again.

The working cycle of

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3 However, with the APT, thecondensate simply fills the main chamber -lifting the float until the changeover linkageis engaged, opening the motive inlet andclosing the exhaust valve.

2 With some temperature controlled equipment,it is possible for the system pressure PS tobe lower than the backpressure at PB.If this occurs a standard trap will stallallowing the condensate to floodthe equipment being drained.

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f the APT10-4.5 and APT14

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4 The snap action mechanism ensuresa rapid change from the trapping modeto the active pumping mode.With the motive inlet valve open,the pressure in the APT increasesabove the total back pressure and thecondensate is forced out through thetrap seat into the plant’s return system.

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The APT provides a total soluSpirax Sarco’s unique and innovative solutionto condensate drainage and removal problemscomes complete in a simple and compactpackage.

APT's provide unrivalled control of steamutilising equipment, offering dual benefits ofprocess efficiency and extended plant life.

Simple to size, convenient to install, an APTforms an integral part of process and heatingequipment drainage. These compact, fullyautomatic pump traps will ensure processplant or equipment remains totally drained ofcondensate under all operating conditions -even vacuum - optimising thermal efficiencyof the heat exchange interface.

EfficientAs the APT is designed for closed loop orsealed applications, there is no escape ofsteam to the plant room and no energy lossfrom flash steam, in fact, even the steam usedfor the motive supply is recycled back intothe system.

Optimum plant efficiencyEffective condensate drainage and rem

Effective condensate drainage and removal isCondensate recoveryMost condensate recovery is carried out usingsteam traps, which use differential pressureto discharge condensate back to the boilerhouse. If a higher backpressure exists in thereturn lines or they are simply mounted in anelevated position, then a steam trap will stallallowing condensate to flood back to theprocess.

Condensate removalWhen the steam trap has stalled, an additionalmotive force is needed to actively remove thecondensate from the process. Activecondensate removal provides stable operatingconditions, giving improved efficiency andprolonged equipment life.

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lution in one compact product

cy reduces running costs.emoval is crucial for peak performance.

is essential for efficient steam plant operation

ProblemsThese can be some of the problemswith simply trapping a heat exchanger:

Poor heat transfer

Irregular temperature control

Corrosion

Noise and waterhammer

Tube failure

High maintenance costs

All too often these problems have remainedunsolved because no fully engineeredcompact system was available.

SolutionThese products are specifically designedto automatically recover and removecondensate as soon as it forms.

They provide the unique opportunity tosolve all condensate handling problems.

The resultThe APT will ensure your equipmentoperates as efficiently as possible -lowering energy consumption of theplant and allowing the process to runat optimum conditions - resulting in:

Reduced costs.

Increased productivity.

Reduced downtime.

Quieter equipment operation.

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Typical applications

Condensate removal from vacuum equipment(Closed system) -

Simple and efficientsolution to a difficult problem.Without the need for high NetPositive Suction Head NPSH,

the APT will operate with only0.2 m installation head from thebase of the pump, and remove

condensate from a vacuumvessel, discharging

it to either high orlow level condensate

return lines.*

Condensate removal fromtube heat exchangers.(Closed system) -the APT is simply connectedto the outlet of tube heatexchanger.No need for vacuum breakers• the APT will drain condensate

under all load conditions• giving exceptional temperature control

at the heat exchange interface.

Condensate removalfrom process vessels and

heat exchangersDesigned for closed or

sealed systems especiallywhere space is limited.

Removal of condensateunder all pressure conditions

ensures stable operatingtemperatures of the heat

exchange interface.Tube corrosion, noise and

waterhammer are all avoided -extending equipment life.

Please note: These are typical applications only and some components have been omitted for clarity.Contact Spirax Sarco for full installation details.

APT14

APT14

APT14

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Condensate removal from multi-heater applications(Closed system) -The APT can be used in single or multi-heater installations supplied by one control valve - as long as the totalconnected load is within the APT's capacity. Heater batteries are particularly prone to corrosion and freezing dueto condensate retention. The APT provides the complete solution to traditional Air Handling Unit problems,and is ideal for any installation where head room is at a premium.

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How to size the APT . . . Simply contact your Spirax Sarco

Spirax Sarco will ensure that the APT is accurately matched toyour process and will provide you with a detailed sizing chart,tailored to your specific application.

Providing the information below is known, we can even provide you withconfirmation over the telephone and fax you your specific chart.

Alternatively arrange a visit for your local Spirax Sarco representativewho can provide detailed APT sizing informationfor all your specific needs.

To help us size an APT for your application,up to 9 000 kg/h, simply provide uswith the following information:-

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Page 11: APT10 and APT14 Automatic pump traps - Microsoftimistorage.blob.core.windows.net/imidocs/0699p051 apt10 and apt14... · 3 t exchanger drainage APT - Automatic pump trap For over 50

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o agent who can size an APT, for your specific needs.

Page 12: APT10 and APT14 Automatic pump traps - Microsoftimistorage.blob.core.windows.net/imidocs/0699p051 apt10 and apt14... · 3 t exchanger drainage APT - Automatic pump trap For over 50

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Cheltenham, Gloucestershire, GL53 8ER UK.Tel: +44 (0)1242 521361 Fax: +44 (0)1242 573342

E-mail: [email protected]: www.SpiraxSarco.com

© Copyright 2005 Spirax Sarco is a registered trademark of Spirax-Sarco Limited

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APT14 / APT14HC

APT10-4.5Dimensions / weights(approximate) in mm and kg���� ��������� ����� ����� �������

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