Closed Expansion Tank

Certificate :ISO 9001 Registered (AC-03271)Energy Service Company (ESCO) (97-2-14)Research Center Attached (NO. 931145)

EX/WX/KX/PXSeries

DIAPHRAGM TYPE CLOSED EXPANSION TANK

The closed expansion tank divided water and air chamber by an inner diaphragm completely intercepts the contact of the system water and the atmosphere, so that it is come true the best piping function.

Selection Procedures

Structure and Operational Principal Characteristic and Advantage

1. Prevention of corrosion for airBy the contact of piping system and air is completely intercepted, an air (or oxygen) can not be mixed. This prevents the corrosionand extends a piping life far. 2. Excellent air venting capacityBy the piping system is maintained at an appropriate positive pressure, the air venting capacity is excellent at piping system.3. No limitation in establishment place It can be installed every position, so there is no worry about frozen to burst and the space application is convenient.4. Expansion of operation temperature scopeBy pressurization it can operate easily at high-temperature water such as above 100℃5. Smooth operation capacityBy the matter due to mixing of air decreases, efficient operation is possible. (circulating obstacle, pump efficiency decrease, soundarresting, vibrating, and so on) 6. Semi-permanent life and energy savingThe life of tank and diaphragm is semi-permanent. The mainten-ance and repair is easy. There is no energy loss due to an evapora-tion or over flow. This reduces amount of make-up water.

1 System Water Content : V [ℓ]Minimum Operating Temperature : TI [℃]Maximum Operating Temperature : TF [℃]Minimum Setting Pressure : PI [kgf/cm2]PI = PO + PV

PO : static pressure for installation position of expansion tankPV : additional pressure for preventing vaporization (Table 2)Maximum Pressure of Piping System : PF [kgf/cm2]PF = PI + ΔPMAX

ΔPMAX = PE― ( A + B + PV + D )PE : inner pressure of piping or setting pressure of relief valveA : surplus against relief valve setting pressure ( = PE× 0.1 )B : static pressure at pipingD : static head of circulation pumpAmount of Expanded Water : VE [ℓ]VE = V × [ v(TF) – v(TI) ]v : specific volume (Table 1)Acceptance FactorA.F. = 1 – ( 1.033 + PI ) / ( 1.033 + PF )Minimum Tank Volume (VT) VT = VE / A.F. Select model according to PF and VT

The * sign is minimum pressure for the venting of air-vent.17.72004.31451.612011.21803.61401.21158.71703.01350.91106.71602.51300.61055.01502.01250.3*below 100

AdditionalPressure[kgf/cm2]

Max.Temp.

[℃]

Additional Pressure[kgf/cm2]

Max.Temp.

[℃]

AdditionalPressure[kgf/cm2]

Max.Temp.

[℃]

Table 2 Additional Pressure for Preventing Vaporization

1.159002001.03959951.00985451.127901801.03590901.00782401.104501701.03237851.00598351.101901601.02899801.00435301.090201501.02576751.00294251.079401401.02270701.00177201.069301301.01979651.00087151.060101201.01705601.00027101.051501101.01448551.0000151.043431001.01207501.000004

S.V.[ℓ /kg]

Temp.[℃]

S.V.[ℓ /kg]

Temp.[℃]

S.V.[ℓ /kg]

Temp.[℃]

Table 1 Specific Volume of Water

① The air chamber of expansion tank was sealed with an initial pressure. This time the system water doesn’t flow the inside of expansion tank.

② When a piping system operates and the temperature rises, the expansion water flows the inside of expansion tank. This time the volume of the air chamber diminishes and the pressure of the expansion tank rises until maximum pressure.

③ When the temperature falls, the system water contracts and the expansion water returns to piping system by the pressure of the air chamber. With this the volume of air chamber increases, the pressure decreases, and the state goes back to initial.

EX/WX-Series

1

4014.44014.44014.44014.44014.44014.44014.44014.44014.44014.44014.4

2525252525252525

20

2020202020

2020202020

Weight[kg]

Nozzle[A]

Max.Press.[kgf/cm2]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

3602000769600EX - 600L2902300614500EX - 500L2602000614400EX - 400L2101600614300EX - 300L1804014.41200614200EX - 200L

68027009331400EX-1400L61024009331200EX-1200L54021009331000EX-1000L4302400769800EX - 800L

940240012332000EX-2000L810200012331600EX-1600L

Nozzle Connection : Screwed End (Flange and over 3000ℓ)Diaphragm Mode : Bladder (Disjointing assembly possible) Inspection Unit of Korea Industrial Safety CorporationColor : PRIMER+E54506(0.2PB 5.1/8.7)Maximum Operating Temperature : 95℃

1030260012332500EX-2500L

1035701530740600S 600/10

Weight[kg]

Nozzle[A]

ØF[mm]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

40485785634200S 200/1030351915480140S 140/1023351675480100S 100/10182535157048080S 80/10132029350540950S 50/10

48485915634250S 250/10544851085634300S 300/10785701075740400S 400/10805701295740500S 500/10

10008006005004003002502001401008050

Volume[ℓ]

– This is the specification of 9.0 kgf/cm2 tank

Maximum Working Pressure : 10 kg/㎠G

1205702430740N1000/61035701990740N 800/6855701530740N 600/6805701295740N 500/6655701075740N 400/6524851085634N 300/645485915634N 250/637485785634N 200/630370890512N 140/620370680512N 100/617370570512N 80/61320340495441N 50/6

Weight[kg]

Nozzle[A]

ØF[mm]

Height[mm]

Diameter[mm, Ø]MODEL

Nozzle Connection : Screwed EndDiaphragm Mode : DiaphragmCE CertificationColor : Red (Powder Painting)Maximum Working Temperature : 70℃

Maximum Working Pressure : 6 kgf/cm2

N Series - Reflex

EX Series Inspection Unit of Korea Industrial

Safety Corporation

It is a “Stand mode” installed vertically on the bottom, and the supplement piping must establish in expansion or main piping with separate way.Please, inquire to our company for a product of large volume (above 2500L) or high pressure (above 9.0)

Closed Expansion Tank for Heating and Cooling EX-Series

2

2525

2525252525

20202020

Weight[kg]

Nozzle[A]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

27730480300AFE-3002525740409200AFE-200

Weight[kg]

Nozzle[A]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

32840480500AFE-500

Nozzle Connection : Screwed EndDiaphragm Mode : Bladder (Disjointing assembly possible)CE Certification Color : Red (Powder Painting)Maximum Working Pressure & Temperature : 16 kgf/cm2, 95℃

851485740500DE 500551280634300DE 30050980634200DE 20032840480100DE 1002773048080DE 80252574040960DE 60

DE Series [Bladder : disjointing assembly possible]6.346035433D 335.549028025D 254.537028018D 183.529328012D 122.5203152068D 8

Weight[kg]

Nozzle[A]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

Nozzle Connection : Screwed EndCE Certification Color : Blue (Powder Painting)All surfaces contacting with water are painted with a protective coating for the safety of hygiene Legionella spp. prevention vessel approved at Germany DVGWMaximum Working Pressure & Temperature : 16 kgf/cm2, 95℃

D Series [Diaphragm : replacement impossible]

AFE Series

D & DE Series - Reflex

6514.46514.46514.4

14.44014.44014.44014.44014.44014.44014.44014.44014.44014.44014.44014.4

Weight[kg]

Nozzle[A]

Max.Press.[kgf/cm2]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

– This is the specification of 9.0 kg/㎠G tank2190350015705000WX-5000L1880300015704000WX-4000L1730270015703500WX-3500L157065240015703000WX-3000L1030280012332500WX-2500L940240012332000WX-2000L810200012331600WX-1600L68027009331400WX-1400L61024009331200WX-1200L54021009331000WX-1000L4302400769800WX-800L3602000769600WX-600L2902300614500WX-500L2602000614400WX-400L2101600614300WX-300L1804014.41200614200WX-200L

Diaphragm Mode : Bladder (Disjointing assembly possible) Inspection Unit of Korea Industrial Safety CorporationColor : PRIMER+E54506(0.2PB 5.1/8.7)Maximum Operating Temperature : 95℃

WX Series

Closed Expansion Tank for Water Supply and Hot Water System

Inspection Unit of Korea Industrial

Safety Corporation

ΦD

H

WX-Series

3

Characteristic of Closed Expansion Tank for Hot Water System

Operational Principal of Closed Expansion Tank for Water Supply

• Escaping from the previous method relieving with an elevated water tank or emitting to a safety valve, this tank prevents thehot water loss and saves the energy by absorbing the expansion water of hot water system.

• The method installing a safety valve in order to relieve an expansion pressure causes the possibility of explosion accident by breakdown and brings on the leakage by frequent operation.

• This tank guarantees the safe operation of hot water system, andalso prevents the water hammer.

When water is used, the water compressed in tank is supplied andthe pressure of air chamber falls. This time the pump is not yetoperated.

When the pressure of air chamber diminishes until Cut-in setting point, the pump is operated by pressure switch and the water supply is continued.

In case that the demand of water supply is low, the water of pump is supplied to tank. When the level of water in tank reaches to a Cut-off setting point, the pump is stopped by pressure switch.

• Even if little water goes out or comes in a fixed space, the pressure increases or decrease quickly because of the incompressibility of water.

• In case that there is no closed expansion tank for water supply or the capacity is insufficient on booster pumping system, this causes serious problems such as the frequently operation and stop of pump, the frequently damage of instrument parts (pressure switch, relay, electronic switch, Etc.), the breakdownof pump motor due to overload, and so on. Those serious problems can bring on the operation impossibility of overall system within a short time.

Closed Expansion Tank for Water Supply and Hot Water System

Problem of no expansion tank

WX-Series

4

Tangential Air Separator

Pilot Operated Air Eliminator #720

• Tangential air separator devices will solve your “System Air”problems.

• Tangential air separators are designed with tangential openings to create a low velocity vortex where entrained air is separatedand removed from circulation chilled or hot water in a closed system.

The #720 Air Eliminator of the AMTROL adopts the Pilot Operated Mechanism which solves the leakage problem of a Direct Acting-Type Air Vent, and is a high performance Air Vent which improves air discharge efficiency.

Performance Chart

9981480048717361067132176235014AS

Maximum Working Pressure : 10 kgf/cm2

– The other specification or special material is the order product.

Air Separator Flow Chart

517105004951650914116866030012AS46775004761511769106456025010AS206470042513106158104602008AS11626003791114457.27043561506AS791800336976406.46503051255AS611200248750318.55402541004AS56680187577267.4456203803AS45450154415216.3404108652½AS32310143458165.2350172502AS7210102305114.3206102251AS

BHDLCWeight

[kg]Max.Flow

[lpm]Dimension [mm]Nozzle

[A]Model

• Maximum working pressure : 10 kgf/cm2

• Maximum operating temperature : 120℃• Materials : body – Steel

flange – KS 10K

• Maximum working pressure : 10 kgf/cm2

• Maximum operating temperature : 120℃• Minimum demand pressure : 0.2 kgf/cm2

• Materials : body – Cast IronPilot part - Bronze

Air Separator & Air Eliminator Air Separator

5

The KX-Series as a closed expansion tank consist of small-sized and light weight air compressor, precise pressure sensor, high reliable automatic controller, and so on, and the microprocessor based automatic control maintains the system pressure of heating and/or cooling water circuits within a desirable range at all time. The KX-Series compared with a pressure changed-type expansion tank (EX/WX Series) have merits as follows.

KX-SERIES

Function of Automatic Control Panel

Comprehensive Operation by the Microprocessor based Control SystemDigital Display of Water Level in the Expansion TankDigital Display of the System PressureEasy Setting of the Control Parameters(System Pressure, Tank Water Level, Operating Time)Replenishing Control of Tank Water (Option)Display of Alarm MessagesSaving the Operation Data(System Pressure, Tank Water Level, Events and Alarms)Expansion Control and Maintaining the desirable System PressureLED Display of Device Status (on/off) (Pump, Solenoid Valve)

Operational principal and function

Fig.1 : At an initial state of piping system, the solenoid controlled valve is shut and the compressor is a stand-still. Fig.2 : When the temperature rises, the expansion water is inflow and the pressure of the air chamber side increases. This time the solenoid

controlled valve is opened and it discharges the pressurized air. The pressure fluctuation of piping system is controlled within the +0.3kgf/cm2.

Fig.3 : When the temperature rises at maximum, amount of expansion water inside the tank become maximum, the solenoid controlled valve is closed, and air discharge is stopped.

Fig.4 : When the temperature falls, the expansion water inside the tank returns to the piping system. This time the diminished pressure is supplemented by the operation of the compressor, so the pressure of piping system is always maintained.

COMPRESSOR CONTROLLED CLOSED EXPANSION TANK

① A pressure changed-type expansion tank follows in establishment location, so that the effective capacity and the tank size are changed. But KX-Series, without in establishment location, have a uniform and small-sized.

② The effective capacity factor can be until maximum 85%, so the tank size and establishment area can be minimized.③ A precise pressure sensor and a reliable automatic controller maintain the pressure fluctuation of piping system within +0.3㎏f/cm2,

therefore the pressure of piping system is very stable.④ The operation and management are very easy for the automatic control system.⑤ It is an inspection unit of Korea Industrial Safety Corporation, so it is safe.

KX-Series

6

Specifications

85%

65%

Accep.Factor

2191350315705000KX-5000L1882296615704000KX-4000L1728269815703500KX-3500L1573

65A

242915703000KX-3000L1030286012332500KX-2500L883243012332000KX-2000L757208112331600KX-1600L64627659331400KX-1400L57724599331200KX-1200L50721549331000KX-1000L3812418769800KX-800L3141969769600KX-600L2452360614500KX-500L2142008614400KX-400L

5.49.014.4

182

40A

1657614300KX-300L

Max. Press.[kgf/cm2]

Weight[kg]

Nozzle[A]

Height[mm]

Diameter[mm, Ø]

Volume[ℓ]MODEL

– Maximum Operating Temperature : 95℃– The weight is the tank of 9.0 kgf/cm2 and excepting compressor

37Assembly TypeOil+Filter Type

3Ø/380V/60Hz2.2KA-51633Ø/380V/60Hz3.7KA-7

251Ø/220V/60Hz3Ø/380V/60Hz

1.8KA-3

141Ø/220V/60Hz3Ø/380V/60Hz

1.1KA-2

14

Integral TypeOil Free Type

1Ø/220V/60Hz3Ø/380V/60Hz

0.55KA-1

Weight[kg]

FormSupplyPower[kW]

MODEL

Air Compressor Chart for Air Compressor Selection

Example of Tank Selection Example of Compressor Selection

Static Head (PO) : 45 mMinimum Setting Pressure (PI)PI = PO + PV = 4.5 + 0.3 = 4.8 kgf/cm2

PO : Static Pressure for Installation Position of Expansion TankPV : Additional Pressure for Preventing VaporizationMaximum Pressure of Piping SystemPT = PI + 0.3 = 4.8 + 0.3 = 5.1 kgf/cm2

Expansion Tank : KX-800LSelection for Air Compressor

KA-1

System Water Content (V) : 40,000 ℓMinimum Operating Temperature (TI) : 10 ℃Maximum Operating Temperature (TF) : 60 ℃Amount of Expanded Water (VE)VE = V × (Specific Vol at TF - Specific Vol. at TI)

= 40,000 × (1.01705 - 1.00027) = 671 ℓMinimum Tank Volume (VT) VT = VE / Acceptance Factor (85%)

= 671 / 0.85 = 790 ℓMaximum Pressure of Piping System : 5.1 kgf/cm2

Selection for Expansion Tank KX-800L & 5.4 kgf/cm2

Compressor Controlled Closed Expansion Tank KX-Series

7

PX-tank system is consist of air-tight expansion tank, pressure holding pumps, automatic control panel, throttling valve, solenoid valves, stop valves, piping, and so on. The air-tight expansion tank contains a Diaphragm (Bladder) in a cylindrical steel vessel of atmospheric pressure applied. And the microprocessor based automatic control enables to maintain the system pressure of heating and/or cooling water circuits within a desirable range at all time. If the system pressure be increased due to the water temperature rise in a heating/cooling circuit, the expanded water shall be directed into the expansion tank by opening the solenoid valve of overpressure-relief through the throttling valve until the system pressure is reduced under the preset pressure. Then, the free air bubbles and some dissolved gases can be separated from the expanded water due to the release of its pressure at the inside of the Bladder which is un-pressurized. That is, the dissolved gases in the water come to be appeared as free air bubbles by relief of its pressure and then the free air bubbles shall be removed from the system through the Air Vent on the top of expansion tank. In theory, the level of air contents in the system can be reduced to approximately the same level of the solubility at the atmospheric pressure according to Henry’s Law. On the other hand, if the system pressure be decreased due to the water temperature drop in the piping circuit, the pressure holding pump shall operate to get the expanded water back into the piping circuit until the system pressure is recovered as higher than the preset pressure. PX-tank system has an additional function of automatic replenishment of tank water at the LOW LEVEL and the draining of tank water at the HIGH LEVEL.

PX-SERIES

Function of Automatic Control PanelComprehensive Operation by Microprocessor Control SystemEasy Setting of the Control Parameters(System Pressure, Tank Water Level) Digital Display of Water Level in the Expansion Tank Digital Display of the System PressureDisplay of Alarm Messages

Installation & Diagram

PUMP CONTROLLED CLOSED EXPANSION TANK

Expansion Control and System Pressure MaintainanceAutomatic Replenishing/Drain of Tank Water LED Display of Device Status (on/off) (Pump, Solenoid Valve)Saving the Operation Data(System Pressure, Tank Water Level, Events and Alarms)

The install of Safety Valve is necessary on pipe line for Heat Exchanger (Water Side)

Automatic replenishment; PX-tank system detects the tank water level by the Level transmitter, which is installed at one supporting leg of the expansion tank. If the water level drops below the minimum preset value, the replenishing solenoid valve opens to refill the tank until the tank water level is re-established over the minimum preset level.Automatic draining: By the same way, if the water level goes higher than the maximum preset value, the draining solenoid valve opens to drain the excess water from the tank until the tank water level is lowered under the preset maximum level. As a result, even if the heating/cooling system is operated somehow out of the design range for a while, the system can be operated as safe in some extent.Automatic deaerated gas: The dissolved gases in the high pressure water are deaerated in the closed expansion tank of atmospheric pressure according to the Henry’s Law.

PX-Series

8

Specifications

Form of PX Setting Pressure

Pump Controlled Closed Expansion Tank

Tank Model NumberP X – 1 0 0 0

Volume : 1000 ℓclosed eXpansion tankPump controlled

Pump System Model NumberPA – 1 2 08

Minimum setting pressure : 8 kgf/cm2

Heat capacity : 2 Gcal/hThe number of pump : 1 PumpPump Assembly

The Minimum setting pressure is the sum value of the static pressure at installed tank position and the additional pressure for preventing evaporization

Please inquiry at our company about the system exceeding maximum operating temperature 95℃ or maximum tank volume 7500L.

Closed Expansion Tank

2210200030502950378018527500PX-75001870200030502950321018526000PX-60001650200030502950283018525000PX-50001240170027502650304015704000PX-40001130170027502650277015703500PX-35001020170027502650251015703000PX-3000760140024002300303012252500PX-2500660140024002300259012252000PX-2000570140024002300225012251600PX-160044011002100200029409251400PX-140039011002100200026309251200PX-120034011002100200023309251000PX-1000270950190018002570763800PX-800210950190018002120763600PX-600160720160015002500610500PX-500130720160015002150610400PX-400100720160015001800610300PX-30050700-10001600634200PX-200

Max. of Operating

Temp : 95℃

Acceptance Factor for

Capacity : 80%

32700-10001600480100PX-1002Pump1Pump

RemarksWeight[kg]

W[㎜]

L [㎜]H[㎜]

D[㎜Ø]

Volume[ℓ]MODEL

2651532327,00016.03.0PA-17172451525254,00016.02.2PA-14172401525254,00012.41.5PA-14122351525254,0008.81.1PA-14082251525254,0005.00.75PA-14052351525252,00016.02.2PA-12172301525252,00012.41.5PA-12122251525252,0008.81.1PA-12082151525252,0005.00.75PA-12052101525252,0002.80.9PA-1202

Weight[kg]

MakeupNozz..[A]

OverflowNozz.[A]

PumpNozz.[A]

Capacity[Mcal/h]

Pset[kgf/cm2]

Power[kW]MODEL

Pump System [1 Pump] (electricity: 3Ø 380V 60Hz)

2951532327,00016.03.0PA-27172801525254,00016.02.2PA-24172751525254,00012.41.5PA-24122701525254,0008.81.1PA-24082601525254,0005.00.75PA-24052701525252,00016.02.2PA-22172651525252,00012.41.5PA-22122601525252,0008.81.1PA-22082501525252,0005.00.75PA-22052451525252,0002.80.9PA-2202

Weight[kg]

MakeupNozz.[A]

OverflowNozz.[A]

PumpNozz.[A]

Capacity[Mcal/h]

Pset[kgf/cm2]

Power[kW]MODEL

Pump System [2 Pump] (electricity: 3Ø 380V 60Hz)

The pump, over-flow, and make-up line connection sizes are extended by heat capacity and maximum operating temperature.2 pump system operates 100%x2EA, stand-by one of two pumps.

PX-Series

9

Deaerated Capacity

Example of Tank Selection Example of Pump Selection

Pump Controlled Closed Expansion Tank

Chart for Pump System Selection

17.72004.31451.612011.21803.61401.21158.71703.01350.91106.71602.51300.6105

5.01502.01250.3*below 100

A.P.[kgf/cm2]

Max. T.[℃]

A.P.[kgf/cm2]

Max. T.[℃]

A.P.[kgf/cm2]

Max. T.[℃]

Table 2 Additional Pressure for Preventing Vaporization

1.159002001.03959951.00985451.127901801.03590901.00782401.104501701.03237851.00598351.101901601.02899801.00435301.090201501.02576751.00294251.079401401.02270701.00177201.069301301.01979651.00087151.060101201.01705601.00027101.051501101.01448551.0000151.043431001.01207501.000004

S.V.[ℓ /kg]

Temp.[℃]

S.V.[ℓ /kg]

Temp.[℃]

S.V.[ℓ /kg]

Temp.[℃]

Table 1 Specific Volume of Water

System Water Content (V) : 18,000 ℓMinimum Operating Temperature (TMIN) : 10 ℃Maximum Operating Temperature (TMAX) : 60 ℃Amount of Expanded Water (VE)VE = V × (Specific Vol at TMAX - Specific Vol. at TMIN)

= 18,000 × (1.01705 - 1.00027) = 302 ℓMinimum Tank Volume (VT) VT = VE / Acceptance Factor(80%) = 302 / 0.8 = 378 ℓSelection for Expansion Tank PX-400L

Heat Exchanger Capacity : 1.2 Gcal/hStatic Head : 40 mMinimum Setting Pressure (PI)PI = PO + PV = 4 + 0.3 = 4.3 kgf/cm2

PO : Static Pressure for Installation Position of Expansion TankPV : Additional Pressure for Preventing Vaporization

Selection for Pump System PA-1205

PX-Series

10

■ Specifications are subject to change for without notice.

This catalog Copyright 2003 ⓒ JANGHAN ENGINEERS, Inc. All Rights Reserved

CAT#:TK200512

Installation Method EX/WX/KX/PXSeries

Head office/factory : 90B 5L, 671-4, Gojan-dong, Namdong-Ku, Incheon, KoreaTEL : 82-32-817-8231 FAX : 82-32-8238

Office : #1501 Daerung Techno Town 8-Cha,Gasan-dong,Geumcheon-gu, Seoul, KoreaTEL : 82-2-2163-8731 FAX : 82-2-2163-8737