Air Separator

8/6/2019 Air Separator

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4900 Series Air Separators Standard & High VelocitySave money and lengthen the lie o system pumps, piping, and components with the Taco 4900 Series air and

dirt removal separators. The 4900 Series scrubber system is designed and constructed to ASME code, withtechnology proven in the ield, around the world. Built with the quality and dependability thats made Tacoamous or its perormance and reliability. 4900 Series internal PALL Ring basket assemblies have beendeveloped with saety and ease o maintenance in mind.

Effective Date: 09/12/08Printed in USA

Air Elimination & Con

Taco Catalog #400-1.4Supersedes: 06/15/07

Available with and without removable coverPatent# 5, 123, 938


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Eliminate bubbles and dirt in the systembefore they cause trouble.Air and dirt trapped in the system can produce major

problems such as reduced heat transer, loss o eiciency,

pipe corrosion, pump damage, increased energy consumption,

and irritating noise. The highly eicient Taco 4900 Seriesseparator, now with optional removable covers, clears

the system o microbubbles, sand, dirt, and rust to save money,

energy, and component wear. 4900 Series stainless steel PALL

Ring baskets can be removed by one person. Unlike many com-

petitive models each 4900 unit is designed and constructed to

the requirements o Section VIII o the ASME code as standard.

European PALL Ring technology. Taco ingenuity.The 4900 Series integral PALL ring technology has been

proven in countless European installations. PALL rings are used

in the processing industry to mix gases with, or separate gasesrom liquids. The use o PALL rings in hydronic air separation is

so unique, its patented. By applying PALL ring technology to air

and dirt separation, the 4900 Series will:

Remove microbubbles as small as 18 X 10 -6m rom the system;

Remove air which has dissolved in the systems water;

Remove air from places where an air vent cannot be installed;

Remove and separate solid particles from the ow.

High efciency cleaning o air and dirt.PALL ring technology has been used or many years in the

processing industry. Tacos application o PALL rings to hydronicair and dirt separation is new to the HVAC industry. While

air bubbles are separated by the PALL rings through a process

known as coalescence, dirt particles are actually caught and

sited to the bottom o the tank, where they can be removed

through a blowdown valve. The 4900 Series provides higher

efciency, with reduced pressure drops, so a somewhat smaller

pump may be used or maximum efciency.

Superior air bubble removal

Series 4900-A models clean the system o ree air and microbubbles;

Series 4900-AD models remove both air AND dirt rom the hydronicsystem. 304 stainless steel screens are provided

on the inlet/outlet o each separator to isolatethe separators internals rom the hydronicsystem. A ushing cock allows for the cleaning

o the PALL rings. A ball valve is providedat the bottom o the unit to permit

blowdown o accumulated particles.While construction o both modelsdiers somewhat, the PALL ring

operating principle is the same.

When water is brought into contact with a PALL RING, the stream isdeected in many directions. Microbubbles attach to the ring surface, bycoalescence growing large enough to be separated.Large numbers o PALL rings in the 4900 Series yieldsvirtually air-ree system water.

Removable Cover and Stainless SteelPall Ring Basket Assembly

Features & Benefits

2


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Prepared for:

E4187.05 Summary

Summary: Efficiency of particle separation

I. Pothof

Report

January 2004

Taco Inc., Cranston RI

Taco air and dirt separator 4903AD-4

delft hydraulics

Prepared for:

E4187.06 Summary

Summary: Efficiency of air separation

I. Pothof

Report

January 2006

Taco Inc., Cranston RI

Taco air and dirt separator 4903AD-4

delft hydraulics

The choice is yours.Delt Hydraulics has tested and certifed the 4900Series superior perormance or dirt and micro bubbleremoval. Choose rom the 4900-A Series or air

removal only, or the 4900-AD Series or air and dirtremoval rom any hydronic heating or chilled water

Features and Benefits

3

Delt Hydraulics

Efciency Reports

system. Delt Hydraulics 2004 and 2006 test reports orparticle separation efciency (shown below) provideinormation on the test procedures ollowed, show test

results or particle separation, and oer conclusions andpractical implications.


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Applications

In addition, as water is heated rom the ill temperatureto the operating temperature, a great deal o air isreleased. Thereore, the simple act o bringing the waterto operating temperature could lead to corrosion andair pockets, both o which should be avoided.

A method o removing this released air rom the pipingsystem is thereore required. Enter the air separator. Anair separator is a device that removes the air rom thecirculating luid.

There are several types o air separators in use today.Depending upon the type o expansion tank used inthe system, the air separator is part o an Air ControlSystem or an Air Elimination System.

Air Control SystemsI a conventional (non-bladder) style expansion tankis used, it is desirable to redirect the separated airto the space above the water level in the expansiontank (Figure 4). The dotted line rom the air separa-tor (scoop) to the plain steel tank shows the properconnection, with the air piped rom the scoop to theexpansion tank through a special tank itting.

This itting directs the air to the top portion o thetank, and discourages air rom migrating back into thesystem (Figure 5), when the system cools on the o

cycle. Note that since the air is recycled to provide acushion in the expansion tank, this system is called anAir Control system.

Note that the circulator is on the supply side o the boiler.This is the proper location, as it results in the highest pres-sure at the top o the system ( i the circulator was on thereturn side o the boiler, the boiler pressure drop reducesthe pressure at the top.) Having a higher pressure at thetop keeps air in solution, and helps prevent problems andair binding.

TACO PLAIN STEEL

EXPANSION TANK

TACOCIRCULATOR

TACO

AIR SCOOP

BOILER

TACO

TANK FITTING

FILL VALVE

RELIEF

VALVE

BACK FLOW PREVENTER

*COLD WATER FILL

FLO-CHEK

18

Air Control System

Figure 4

TANK

TANK FITTING

AIR

WATER

BAFFLE TRAPS

AIR AND DIRECTS

IT TO THE TOP OF

TANK THRU

OUTER TUBE

Tank Fitting

Figure 5

5


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Applications

Air Elimination SystemsI a Captive Air or Bladder Style expansion tank is used,there is no reason to save the separated air (Figure 6).Thereore, i an air separator (scoop) is used in an airelimination system rather than an air control system,

the separator is itted with an automatic air vent (TacosHy-Vent series), which discharges the separated airto the atmosphere. Note that since the air is elimi-nated through an air vent this system is called an AirElimination system.

Optimum perormance is achieved at line velocities upto 4 t/sec. However, air scoops have been successullyinstalled on applications with velocities up to 8 t/sec.Air scoops are specifcally designed or the line sizewhich they are to be installed. These sizes range rom

1 inch to 4 inch.

Most manuacturers rate their air scoop product linesor 125 psi with a maximum operating temperature o300F. Air scoops are installed in conjunction with anexpansion tank and air vent as shown in igure 7.(See Taco Catalog# 100-7.2 or additional inormation.)

:

:

TACO

FLO-CHEK

TACO HY-VENT

TACO AIR SCOOP

BOILER

TACO

CIRCULATOR

TACO PRESSURE

REDUCING VALVE

TACO

DIAPHRAM TYPE

EXPANSION TANK

COLD WATER

SUPPLY

Figure 7

DIAPHRAM TYPE

EXPANSION TANK

TACO

CIRCULATOR

TACO AIR SCOOP

VENT

BOILER

TACO

RELIEF

VALVE

FLO-CHEK18

Figure 6

Types o Air SeparatorsAir Scoop

Taco Air scoops are applied inresidential and light commercial

applications or the removal oree air in water or water/glycolsystems. The body o each airscoop provides an increased cross sectional area whichlowers velocity within the piping network thereby allowingree air to rise due to buoyant orce. To assist with theremoval of smaller air bubbles integral bafes are incorpo-rated within most air scoops.

Applications Smaller systems

Lower cost

Compact installation

6


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8/20

Applications

8

STRAINER REMOVAL

COLD WATER

SUPPLY

TACO CAPTIVE AIR

EXPANSION TANK

TACO PRESSURE

REDUCING VALVE

TACO

AIR SEPERATORPRESSURE

GAUGETACO PUMP

TACO

SUCTION

DIFFUSER

TACO

MULTI-PURPOSE

VALVE

TACO HY-VENT

Figure 10

Applications Larger systems

Lower pressure drop

Removal of larger particles

Optional stainless steel strainers are specifed to captureand allow the removal o larger debris. These screensare normally specifed with 3/16 inch perorations andree area o not less than 5 times the open area o thenozzle to minimize pressure drop. Most manuacturers

provide a blowdown connection at the bottomo the unit.

When In-Line Air Separators are installed in conven-tional Air Control systems with plain steel expansiontanks (Figure 9) care must be taken to insure that pipingbetween the air separator and the plain steel expan-sion tank is pitched at least 3 degrees to acilitate themigration o captured air back into the expansion vessel.Systems with plain steel expansion tanks must not haveautomatic vents installed as this will lead to the loss othe expansion tank compression cushion.

STRAINER REMOVAL

COLD WATER

SUPPLY

TACO PLAIN STEEL

EXPANSION TANK

TACO PRESSURE

REDUCING VALVE

TACO

AIR SEPERATOR

SLOPE PIPE

UP TO TANK

PRESSURE

GAUGE

TACO PUMP

TACO

SUCTION

DIFFUSER

TACO

MULTI-PURPOSE

VALVE

Figure 9

Tangential ASME Air SeparatorsTaco Tangential Air Separators areapplied in commercial, institutionaland industrial applications or theremoval o ree air in water orwater/glycol systems. The Tangentialdesign air separators utilize the di-erence in density to separate reeair from system uid.

System uid within a tangential airseparator is orced to the wall othe separator due to centriugalorce. The less dense air then migrates to the center o theseparator or venting at the top o the unit. Tangential airseparators produce higher pressure drops than in-line ormicro-bubble separators due to the vortex developmentwithin the unit.

Air Separator with Plain Steel Expansion Tank

Air Separator with Captive Air Tank

When In-Line Air Separators are installed in Air Eliminationsystems (Figure 10) with Captive Air bladder or diaphragmstyle expansion tanks, automatic air vents should beinstalled at the top o each separator. As Air Eliminationsystems have a permanent separation provided by the blad-

der or diaphragm between the initial tank pre-charge andthe system uid, no loss of pre-charge air will occur.(See Taco Catalog# 400-1.1 or additional inormation.)


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Applications

9

4900 Series High Efciency Micro-BubbleAir and Dirt ASME SeparatorTaco 4900 Series High Efciency Micro-BubbleAir and Dirt Separators are appliedin commercial, institutional and indus-trial applications or the removal o ree andentrained air. The 4900 Series utilize thecoalescence o micro air bubbles aroundPALL rings to separate ree air rom a

system uid.

The 4900 Series incorporates the highestavailable coalescence surace area availableon the market today. This enhanced suracearea allows the removal o micro-bubbles as smallas 18 microns in diameter. The 4900 Series separa-tors remove up to 100% of the free air, 100% of theentrained air, and up to 99.6% of the dissolved airin the system uid. This eature is especially benefcialin correcting problems in air entrained systems.

These units are designed, built and stamped to therequirements o ASME. Manuacturers oer tangentialseparators in working pressures o 125, 150, 250 psi andhigher i required.

Optional stainless steel strainers are specifed to capture

and allow the removal o large debris. These screens arenormally specifed with 3/16 inch perorations and reearea o not less than 5 times the open area o the nozzleto minimize pressure drop. Most manuacturers provide ablowdown connection at the bottom o the unit.

When Tangential Air Separators are installed in conven-tional Air Control systems with plain steel expansion tanks(Figure 9) care must be taken to insure that piping betweenthe air vent and the plain steel tank is pitched at least 3degrees to acilitate the migration o captured air back intothe expansion vessel. Systems with plain steel expansiontanks must not have automatic air vents installed as this willlead to the loss o the expansion tank compression cushion.

When Tangential Air Separators are installed in AirElimination systems (Figure 10) with Captive Air bladderor diaphragm style expansion tanks, automatic air ventsshould be installed at the top o each air separator. AsAir Elimination systems have a permanent separation provid-ed by the bladder or diaphragm between the initial tank pre-charge and the system uid, no loss of pre-charge will occur.(See Taco Catalog# 400-2.8 or additional inormation.)

Applications

Larger systems Removal of larger particles

An additional eature o the 4900 Series is the capabilityto remove dirt rom hydronic systems. 4900 Series dirtseparators are capable of removing dirt particlesas small as 35 microns in diameter. This eatureis especially benefcial in cleaning up dirty systems withclogged strainers, balance and control valves.

The 4900 Series has been designed in two velocity ranges,a standard product series suitable or line velocity to 4.9t/sec. and a high velocity series suitable or line velocitiesup 11 t/sec. The perormance o the 4900 product linehas been independently tested and published. (These testresults are available through your local Taco representative.)

These units are designed, built and stamped to therequirements ASME Section VIII, Division 1. Manuacturersoer micro bubble air and dirt separators in workingpressures o 125, 150, 250 psi.

When High Efciency Micro Bubble Air and DirtSeparators are installed in conventional Air Control sys-tems with plain steel expansion tanks (Figure 9) care mustbe taken to insure that piping between the air vent andthe plain steel tank is pitched at least 3 degrees to acili-tate the migration o captured air back to the expansionvessel. Systems with plain steel expansion tanks must nothave automatic vents installed as this will lead to the losso the expansion tank compression cushion.

When High Efciency Micro Bubble Air and Dirt

Separators are installed in Air Elimination systems (Figure10) with Captive Air bladder or diaphragm style expansiontanks, automatic air vents are built into the top o eachair separator. As Air Elimination systems have permanentseparation provided by the bladder or diaphragm betweenthe initial tank pre-charge and the system uid, no loss ofpre-charge air will occur.

Applications

Larger systems

Higher efciencies

Higher velocities

Removal of smaller air bubbles, e.g. removal ofair in air entrained systems (removes microair bubbles)

Removal of smaller particles, e.g. cleaning ofdirty systems (removes particles and dirt)


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New Selection Procedure

10

Selection Examples

Example 1

Problem:

Select an air separator or a new installation. For maxi-mum perormance o the hydronic system the projectrequires removal o micro air bubbles rom the system.The system will have better than average maintenance.

Conditions:

Flow rate = 700 gpmPipe size = 6Velocity = 8 psMaximum pressure drop - 3 t.

1. Determine the type o air separator required. Forremoval o micro air bubbles this would require aTaco 4900 Series Air Separator with a model number4906AH (See #2 below)

For systems requiring dirt removal select the standardnon-removable top head cover design with a blowndown valve located at the bottom o the unit.Add letter designation D to indicate dirt removal.(e.g. 4906ADH).

2. Determine the velocity range o the 4900 Series thatis suitable or these conditions. The velocity range orthe standard unit is 4.9 ps. The velocity range or thehigh velocity unit is 11 ps. Thereore, select the highvelocity model number ending with an H.

3. Determine the size o the 4900 or the specifedmaximum pressure drop. For a maximum pressuredrop o 3 t. the unit size required is a 6 (2.7 t.).This is Model 4906ADH.

Non-Removable Head Cover


11/20

Existing Selection Procedure

11

Selection Examples

Example 2

Problem:

Select an air separator or an existing installation with airentrainment and dirt problems. The system has less thanaverage maintenance or open systems.

Conditions:

Flow rate = 150 gpmPipe size = 4Velocity = 4 psMaximum pressure drop - 3 t.

1. Determine the type o air separator required.For removal o micro air bubbles and dirt this wouldrequire a Taco 4900 Series Air and Dirt Separator witha model number ending with an AD.

For a system with less than average maintenance oropen systems select the removable top head coveror easier cleaning. This is a model number endingwith an R.

2. Determine the velocity range o the 4900 Series thatis suitable or these conditions. The velocity range or

the standard unit is up to 4.9 ps. The velocity rangeor the high velocity unit is 11 ps. I the velocity isunder 4.9 ps select the standard velocity unit. I theapplication velocity is above 4.9 ps and below 11 psa high velocity unit would be required. This wouldrequire the addition o the letter H at the end othe model number.

No additional letter designation is required or lowvelocity selections.

3. Determine the size o the 4900 or the specifedmaximum pressure drop. For a maximum pressuredrop o 3 t. the unit size required is a 4 (1.6 t.).This is Model 4904ADR

Removable Top Head CoverTaco recommends the use of a removable

top head cover option on all open systems.


12/20

Typical Specifications

12

Furnish and install air and dirt removal device o thesize and type shown on the plans. Air and dirt separa-tion devices shall be Taco 4900 series or approved equal.Listing o a manuacturers name does not allow theirconstruction standards to deviate rom the require-

ments o this specifcation.

Air and dirt removal device shall be constructed o steel.It shall be designed, abricated and stamped per ASMESection VIII Division 1 with a maximum working pressureo 125 psi (150 optional) at 270 degrees F. Units upto three 3-inch in size shall be provided with threadedconnections as standard. Units 4-inch and larger shall beprovided with anged system connections as standard.

Each air and dirtremoval device shall be

equipped with a brassconical shaped air vent-ing chamber designedto minimize system uidrom ouling the vent-ing assembly. A brassushing cock shall belocated on the side oeach separator to acili-tate system ast-fll andremoval of the oatingimpurities rom the air

system interace within the separator. A blow downvalve shall be provided by the unit manuacturer on thebottom o each unit to allow blow down and cleaning.On units 2-1/2 and smaller the valve and all o its ft-tings shall be 1. On units three 3 and larger the valveand all openings shall be 2.

The air and dirt removal device shall remove air downto 18 microns and shall remove dirt/debris down to 35microns. The unit shall be 100% efcient at removingdirt down to 90 microns in 100 passes or less. The unitmanuacturer shall provide the owner and design engi-

neer third party independent test data certiying thattheir unit perorms to the above standards. Suppliersnot providing these independent perormance testresults will not be acceptable.The air and dirt separator shall employ the use o high

Dirt Removal Efciency o Separator

ParticleSize10-6m(

microns)

1.64 2.46 3.28 4.10 4.92

0.50 0.75 1.00 1.25 1.50

Typical installation

surace area pall rings to achieve optimal separation oair and dirt with minimal pressure drop. The pall ringsshall be made o stainless steel. Stainless steel will be theonly acceptable material used or suppressing turbulenceand increasing surace area or high efciency air and dirtremoval. Inerior materials o construction such as cop-per or the straining medium will not be acceptable. Theminimum allowable surace area o the straining mediumshall be ____ sq t or the ______model and _______sqt or the _______model.

(OPTIONAL) The unit shall be manuactured with aremovable upper head to acilitate removal, inspection,and cleaning o the pall ring basket.


13/20

Pressure Drops

13

High Velocity 4900 Series

Standard Velocity 4900 Series


14/20

Non-Removable Cover

14

4900 Series Standard Velocity Air Separator (Submittal 401-072)

4900 Series Standard Velocity Air/Dirt Separator (Submittal 401-073)

PipeSize

ModelNumber

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

SurfaceArea*(Sq.Ft)

OptimumFlow (GPM)

Approx.Wt. (LBS.)

2 4902AT 6-5/8 14 11-1/2 5-3/8 4-5/16 --- --- 9.7 51 302 4902A 6-5/8 14 13-3/4 5-3/8 4-5/16 --- --- 9.7 51 34

2-1/2 49025AT 6-5/8 14 11-3/4 5-9/16 4-5/16 --- --- 6.0 73 38

2-1/2 49025A 6-5/8 14 13-3/4 5-3/16 4-5/16 --- --- 6.0 73 473 4903AT 10-3/4 20 17-3/8 7-1/4 6 --- --- 21.1 113 743 4903A 10-3/4 20 18 7-1/4 6 --- --- 21.1 113 834 4904A 10-3/4 20 20-1/2 7-1/4 6 --- --- 21.1 194 1145 4905A 14 26-1/2 24-1/4 8-3/4 7 12 6-11/16 33.4 306 1966 4906A 14 26-1/2 23-3/8 8-3/4 7 12 6-11/16 38.7 441 2048 4908A 18 33-5/8 28-3/8 11-3/8 8-1/2 14 7 81.4 764 28810 4910A 24 45 35-1/8 13-1/2 9-1/4 20 7-1/16 139.9 1204 56312 4912A 24 51-1/2 36-3/8 14-1/2 9-1/4 20 7-1/16 164.9 1709 58214 4914A 30 57-1/4 43-3/8 17-1/4 11-5/16 24 7-15/16 293.5 2066 90816 4916A 30 64 44-1/2 18-1/2 11-5/16 24 7-15/16 330.3 2699 920

THREADED CONNECTIONS

4902AT THROUGH 4903AT

FLANGED CONNECTIONS

4902A THROUGH 4916A

A

B

PACKING

D

C

E

12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

OPTIONAL

BASE RING

(5" THRU 16")

ADD SUFFIX R

LIFTING LUG

(2) 180 APART

(5" THRU 16")

PACKING

A

B

D

C

GF

E

WORKING PRESSURE:125 PSI @ 270F(150 PSI @270F Option Available)

*Coalescence (Pall Ring)Surface Area

Designed and constructedper ASME Section VIII, Div. 1

Larger size units available,consult Factory

PipeSize ModelNumber A Dia.(Inch) B Max.(Inch) C(Inch) D(Inch) E(Inch) F Dia.(Inch) G(Inch)

Surface

Area*(Sq.Ft)

OptimumFlow (GPM) Approx.Wt. (LBS.)

2 4902ADT 6-5/8 17-5/8 11-1/2 7 4-5/16 --- --- 9.3 51 372 4902AD 6-5/8 17-5/8 13-3/4 7 4-5/16 --- --- 9.3 51 42

2-1/2 49025ADT 6-5/8 17-5/8 11-3/4 7 4-5/16 --- --- 5.7 73 462-1/2 49025AD 6-5/8 17-5/8 13-3/4 7 4-5/16 --- --- 5.7 73 57

3 4903ADT 10-3/4 25-1/4 17-3/8 11-3/8 6 --- --- 20.7 113 933 4903AD 10-3/4 25-1/4 18 11-3/8 6 --- --- 20.7 113 1044 4904AD 10-3/4 25-1/4 20-1/2 11-3/8 6 --- --- 20.7 194 1435 4905AD 14 33-5/8 24-1/4 15-3/4 7 --- --- 36.6 306 2486 4906AD 14 33-5/8 23-3/8 15-3/4 7 --- --- 41.0 441 2598 4908AD 18 42-1/2 28-3/8 18-3/16 8-1/2 17-1/2 12-1/2 82.9 764 36610 4910AD 24 56-7/8 35-1/8 25-3/8 9-1/4 20 13-3/16 152.1 1204 71312 4912AD 24 63-3/8 36-3/8 26-3/8 9-1/4 20 13-3/16 175.5 1709 73914 4914AD 30 73 43-3/8 33 11-5/16 24 13-11/16 307.7 2066 116216 4916AD 30 79-13/16 44-1/2 34-1/8 11-5-16 24 13-11/16 341.2 2699 1198





THREADED CONNECTIONS4902ADT THROUGH 4903ADT

FLANGED CONNECTIONS4902AD THROUGH 4916AD

A

B

PACKING

D

C

E

12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

OPTIONAL

BASE RING

(8" THRU 16")

ADD SUFFIX R

LIFTING LUG

(2) 180 APART

(5" THRU 16")

PACKING

A

B

D

C

GF

E

FACTORY

INSTALLED

BLOWDOWN

VALVE

(1" on 4902 & 49025)

(2" on 4903 & LARGER)

FACTORY

INSTALLED

BLOWDOWN

VALVE

(1" on 4902 & 49025)

(2" on 4903 & LARGER)


15/20

Non-Removable Cover

15

4900 Series High Velocity Air Separator (Submittal 401-076)

4900 Series High Velocity Air/Dirt Separator (Submittal 401-075)

PipeSize

ModelNumber

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

SurfaceArea*(Sq.Ft)

OptimumFlow (GPM)

Approx.Wt. (LBS.)

2 4902AH 14 24-13/16 21-3/4 9 6-15/16 --- --- 64.2 110 852-1/2 49025AH 14 24-13/16 21-3/8 9 6-15/16 --- --- 39.2 165 90

3 4903AH 14 28-3/8 21-1/4 9 6-15/16 --- --- 52.2 251 100

4 4904AH 14 28-3/8 24 9 6-15/16 --- --- 52.2 434 1105 4905AH 20 39-3/4 30 12 8-1/8 16 6-3/4 108.1 687 1906 4906AH 20 39-3/4 29-5/8 12 8-1/8 16 6-3/4 108.1 991 2058 4908AH 24 47-5/16 34-5/8 14 9-1/4 20 7 190.1 1716 43010 4910AH 30 59-7/16 41-1/4 18 11-5/16 24 8 303.8 2700 60012 4912AH 30 59-7/16 42-3/4 18 11-5/16 24 8 303.8 3833 65014 4914AH 36 71-5/8 49-5/8 22 12-7/8 30 7-7/8 544.7 4625 94016 4916AH 36 71-5/8 51 22 12-7/8 30 7-7/8 544.7 6041 965

F

C

G

D

OPTIONAL BASE RING(5" THROUGH 16")ADD SUFFIX R

B

A

E

SYSTEMCONNECTION

PACKING 12" BALL VALVE

AIR VENTLIFTING LUG

(2) - 180 APARTWORKING PRESSURE:125 PSI @ 270F(150 PSI @270F Option Available)




Pipe

Size

Model

Number

A Dia.

(Inch)

B Max.

(Inch)

C

(Inch)

D

(Inch)

E

(Inch)

F Dia.

(Inch)

G

(Inch)

SurfaceArea*(Sq.Ft)

Optimum

Flow (GPM)

Approx.

Wt. (LBS.)

2 4902ADH 14 32-11/16 21-3/4 17 7 --- --- 107.3 110 1002-1/2 49025ADH 14 32-11/16 21-3/8 17 7 --- --- 65.6 165 105

3 4903ADH 14 40-1/8 21-1/4 20-13/16 7 --- --- 81.2 251 1204 4904ADH 14 40-1/8 24 20-13/16 7 --- --- 81.2 434 1305 4905ADH 20 57-1/2 30 29-3/4 8-1/2 18 12-15/16 162.8 687 2556 4906ADH 20 57-1/2 29-5/8 29-3/4 9-1/4 18 12-15/16 162.8 991 2708 4908ADH 24 69-1/16 34-5/8 35-3/4 9-1/4 20 13-1/8 287.7 1716 52010 4910ADH 30 85-13/16 41-1/4 44-7/16 11-3/8 24 13-3/4 454.7 2700 73512 4912ADH 30 85-13/16 42-3/4 44-7/16 11-3/8 24 13-3/4 454.7 3833 78514 4914ADH 36 102-15/16 49-5/8 53-1/4 13 30 13-5/8 797.8 4625 110016 4916ADH 36 102-15/16 51 53-1/4 13 30 13-5/8 797.8 6041 1125





F

C

G

D

FACTORY INSTALLED

BLOWDOWN VALVE

(1" on 4902 & 49025)(2" on 4903 & LARGER)

OPTIONAL BASE RING

(5" THROUGH 16")

ADD SUFFIX R

B

A

E

SYSTEM

CONNECTION

PACKING 12" BALL VALVE

AIR VENTLIFTING LUG

(2) - 180 APART


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Removable Cover

4900 Series Removable Cover Air Separator (Submittal 401-072R)

4900 Series Removable Cover Air/Dirt Separator (Submittal 401-073R)

16

PipeSize

ModelNumber (1)

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

H(Inch)

K(Inch)

SurfaceArea (2)

(Sq.Ft)

OptimumFlow(GPM)

Approx.Wt.

(LBS.)

2 4902AR-41 14 27-1/8 21-3/4 9 6 --- --- 10 15 38.5 51 2652-1/2 49025AR-41 14 27-1/8 21-3/8 9 6 --- --- 10 15 38.5 73 270

3 4903AR-42 14 30-11/16 21-1/4 9 6 --- --- 10 18 50.8 113 280

4 4904AR-42 14 30-11-16 24 9 6 --- --- 10 18 50.8 194 2905 4905AR-42 14 34-1/4 24-1/4 9-15/16 6 12 6-11/16 10 22 41.6 306 3806 4906AR-42 14 34/1/4 23-3/8 9-15/16 6 12 6-11/16 10 22 41.6 441 3858 4908AR-42 18 43 28-3/8 12-1/4 7-1/4 14 7 12 28 89.7 764 55010 4910AR-42 24 52-3/16 35-1/8 16-1/8 8-7/8 20 7-1/16 15 32 146.9 1204 100012 4912AR-42 24 57-15/16 36-3/8 16-3/8 8-7/8 20 7-1/16 15 38 176.5 1709 103014 4914AR-42 30 65-1/4 43-3/8 19 10-1/2 24 7-13/16 17 42 307.9 2066 130016 4916AR-42 30 71-1/4 44-1/2 20-1/2 10-1/2 24 7-13/16 17 48 356.5 2699 1350


(1) For 150 PSI model numbers, replace -41 with -61 & -42 with -62(2) Coalescence (Pall Ring) Surface Area



12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

OPTIONAL

BASE RING

(5" THRU 16")

ADD SUFFIX R

LIFTING LUG

(2) 180 APART

A

B

D

C

G

F

E

PACKING

H

K

(TO REMOVE

BASKET)

REMOVABLE COVER ASSEMBLY

REMOVABLE

BASKET ASSEMBLY

PipeSize

ModelNumber (1)

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

H(Inch)

K(Inch)

SurfaceArea (2)

(Sq.Ft)

OptimumFlow

(GPM)

Approx.Wt.

(LBS.)2 4902ADR-41 14 35-1/6 21-3/4 16-15/16 6 --- --- 10 22 65.3 51 280

2-1/2 49025ADR-41 14 35-1/6 21-3/8 16-15/16 6 --- --- 10 22 65.3 73 2853 4903ADR-42 14 42-9/16 21-1/4 20-13/16 6 --- --- 10 26 79.3 113 3004 4904ADR-42 14 42-9/16 24 20-13/16 6 --- --- 10 26 79.3 194 3105 4905ADR-42 14 46 24-1/4 26-1/2 6 --- --- 10 23 57.2 306 4306 4906ADR-42 14 46 23-3/8 26-1/2 6 --- --- 10 23 57.2 441 4408 4908ADR-42 18 50 28-3/8 24-3/16 7-1/4 17-1/2 12-1/2 12 28 89.7 764 63010 4910ADR-42 24 56-7/8 35-1/8 25-3/8 8-7/8 20 13-3/16 15 35 159.8 1204 115512 4912ADR-42 24 63-3/8 36-3/8 26-3/8 8-7/8 20 13-3/16 15 41 193.3 1709 118014 4914ADR-42 30 73 43-3/8 33 10-1/2 24 13-9/16 17 45 332.2 2066 155016 4916ADR-42 30 79-13/16 44-1/2 34-1/8 10-1/2 24 13-9/16 17 52 390.9 2699 1580





12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

OPTIONAL

BASE RING

(8" THRU 16")

ADD SUFFIX R

LIFTING LUG

(2) 180 APART

A

B

D

C

G

F

E

PACKING

H

K

(TO REMOVE

BASKET)


REMOVABLE

BASKET ASSEMBLY

FACTORY INSTALLED

BLOWDOWN VALVE

(1" on 4902 & 49025)

(2" on 4903 & LARGER)


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Removable Cover

17

4900 Series Removable Cover High Velocity Air Separator (Submittal 401-076R)

4900 Series Removable Cover High Velocity Air/Dirt Separator (Submittal 401-075R)

PipeSize

ModelNumber (1)

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

H(Inch)

K(Inch)

SurfaceArea (2)

(Sq.Ft)

OptimumFlow(GPM)

Approx.Wt.

(LBS.)

2 4902AHR-41 14 27-1/8 21-3/4 9 6 --- --- 10 15 38.1 110 2652-1/2 49025AHR-41 14 27-1/8 21-3/8 9 6 --- --- 10 15 38.1 165 270

3 4903AHR-42 14 30-11/16 21-1/4 9 6 --- --- 10 18 50.8 251 280

4 4904AHR-42 14 30-11/16 24 9 6 --- --- 10 18 50.8 434 2905 4905AHR-42 20 44-1/16 30 12 7-3/4 16 6-3/4 13 27 105.8 687 5206 4906AHR-42 20 44-1/16 29-5/8 12 7-3/4 16 6-3/4 13 27 105.8 991 5358 4908AHR-42 24 52-1/2 34-5/8 14 8-7/8 20 7-1/16 15 32 187.0 1716 87010 4910AHR-42 30 64-9/16 41-1/4 18 10-1/2 24 7-13/16 17 41 299.8 2700 100012 4912AHR-42 30 64-9/16 42-3/4 18 10-1/2 24 7-13/16 17 41 299.8 3833 105014 4914AHR-42 36 79-3/16 49-5/8 22 12 30 7-7/8 20 50 537.5 4625 150016 4916AHR-42 36 79-3/16 51 22 12 30 7-7/8 20 50 537.5 6041 1530





12" BALL VALVE

AIR VENT

SYSTEM

CONNECTION

OPTIONAL

BASE RING

(5" THRU 16")

ADD SUFFIX R

LIFTING LUG

(2) 180 APART

A

B

D

C

G

F

PACKING

H

K

(TO REMOVE

BASKET)


REMOVABLE

BASKET ASSEMBLY

E

PipeSize

ModelNumber (1)

A Dia.(Inch)

B Max.(Inch)

C(Inch)

D(Inch)

E(Inch)

F Dia.(Inch)

G(Inch)

H(Inch)

K(Inch)

SurfaceArea (2)

(Sq.Ft)

OptimumFlow

(GPM)

Approx.Wt.

(LBS.)2 4902ADHR-41 14 35-1/16 21-3/4 16-15/16 6 --- --- 10 22 65.3 110 280

2-1/2 49025ADHR-41 14 35-1/16 21-3/8 16-15/16 6 --- --- 10 22 65.3 165 2853 4903ADHR-42 14 42-9/16 21-1/4 20-13/16 6 --- --- 10 26 79.3 251 3004 4904ADHR-42 14 42-9/16 24 20-13/16 6 --- --- 10 26 79.3 434 3105 4905ADHR-42 20 61-13/16 30 29-3/4 7-3/4 18 12-15/16 13 39 159.6 687 5856 4906ADHR-42 20 61-13/16 29-5/8 29-3/4 7-3/4 18 12-15/16 13 39 159.6 991 6008 4908ADHR-42 24 74-1/4 34-5/8 35-3/4 8-7/8 20 13-1/8 15 47 282.9 1716 96010 4910ADHR-42 30 91-1/8 41-1/4 4 4-7/16 10-1/2 24 13-3/4 17 59 448.6 2700 113012 4912ADHR-42 30 91-1/8 42-3/4 4 4-7/16 10-1/2 24 13-3/4 17 59 448.6 3833 118014 4914ADHR-42 36 109-1/2 49-5/8 53-1/4 12 30 13-5/8 20 71 787.3 4625 166016 4916ADHR-42 36 109-1/2 51 53-1/4 12 30 13-5/8 20 71 787.3 6041 1690





F

C

G

D

FACTORY INSTALLEDBLOWDOWN VALVE

(1" on 4902 & 49025)(2" on 4903 & LARGER)

OPTIONAL BASE RING(5" THROUGH 16")ADD SUFFIX R

B

A

E

SYSTEMCONNECTION

PACKING

12" BALL VALVE

AIR VENTLIFTING LUG

(2) - 180 APART

REMOVABLEBASKET ASSEMBLY


H

K(TO REMOVE

BASKET)


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Notes

18


19/20

Notes

19


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Taco Inc., 1160 Cranston Street, Cranston, RI 02920 / (401) 942-8000 / Fax (401) 942-2360

Hydronic professionals everywheretrust Taco for the highest quality sys-

tems, components, technology, and

support. Visit taco-hvac.com for

more information on 4900 Series Air

Separators, additional products, sys-

tems, software & training.

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Air Separator

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