Dip Flowcon

7/27/2019 Dip Flowcon

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FlAB/ABV

The ’’adjustable’’ automatic

ow control valves



The FlowCon AB and ABV automatic

balancing valves are designed for

balancing heating and air-conditioning

terminal units by providing a constant

flow rate with the added feature of being

adjustable.

The AB / ABV automatic balancingvalves contain an internal composite flow

control cartridge which keeps the flow

rate constant, even with system pressure

conditions changing.

The main difference between these and

other automatic balancing valves is that

each flow control cartridge can be easily

removed and adjusted to one of eight

different flow rates.

There are 14 different adjustable

cartridges, totalling nearly 100 different

flow rates available in sizes 15mm

through 40mm. The adjustable

feature, along with the built-

in ball valve, enables

the contractor or

maintenance

engineer to

easily change

the flow rate

to the terminalunit on the job

site or after

installation.

Features and Benefits

- Automatic balancing, the correct

flow rate for each circuit is achieved

automatically.

- Dynamic balancing, the correct flow

rate is maintained as each valve

compensates for pressure fluctuations in

the system.- Field adjustable, flow rate can be

changed on demand.

- Elimination of branch or »partner«

balancing valves (fewer total valves

used in each project).

- Easily accessible cartridge for flow

rate adjustment or maintenance.

- Accuracy of +/- 10%.

- Built-in isolation ball valve.

- Pressure / temperature measurement

plugs for verifying operating pressure

differential range or checking ∆T across

the coil.

- Double union end connection for ease

of installation and wide selection of end

fittings.

Each cartridge is easily

adjusted.

Dynamic Balancing Valve with internal adjustable ow cartridge

FlowCon

AB and ABV

A total of 14 cartridges available, each

covering a range of flow rates, ensures

the flow rate required is obtainable.



AB 15/20

ABV 15/20/25ABV 25/32/40

Cartridge Type Y G X C D

Pressure Differential(kPa) 15-130 30-400 15-130 22-300 30-410

(psi) 2.2-18.9 4.35-58 2.2-18.9 3.2-43.5 4.35-59.5

Flow Rate(l/sec) 0.0081-0.2733 0.0117-0.4078 0.17-0.85 0.23-1.21 0.27-1.43

(GPM) 0.13-4.33 0.19-6.46 2.7-13.5 3.65-19.2 4.28-22.7

Static Pressure(kPa) 2500 2500 2500 2500 2500

(psi) 360 360 360 360 360

Temperature Rating (°C) -30 to +100(°F) -22 to +212

Pressure Drop DataNOTE: For pump head calculations, add the minimum pressure differential for

the index circuit to the other componenets pressure losses (i.e. valves, coil, etc.)

Automatic Flow Control (kPa) 15 30 15 22 30

Valve (Kv-value) 2.6 12.5

Principle of Operation

The flow control cartridge of FlowCon AB /

ABV contains two interacting components;

one that has an adjustable orifice, and

one that regulates the pressure differential

across the adjustable orifice.

The principle of operation and the principleof construction is shown in figures above.

P1 and P3 are system pressures, P1-

P3 is the total pressure drop across the

valve. P2 is set by the diaphragm acting

in reaction to P1 in the upper diaphragm

chamber. Interacting with the spring, P1-

P2 remains constant, keeping a constant

∆P across the orifice areas. The result is

a constant flow rate through the valve,

independent of pressure fluctuations.

Below its pressure differential range, thevalve acts as a fixed orifice. This allows

a temperature control valve in the same

circuit to operate with valve authority up to

the set flow rate maximum.

Automatic vs. Manual System

Layout Comparison

Manually balanced system

Total number of valves (manual) 40.

In addition to terminal unit valves, manual

balancing requires »partner valves«

located on the branches.

Automatic balanced system

Total number of valves (automatic) 27

Each branch isautomatically balanced

due to the correct

balance of each coil.

Sum total of 0.31 l/s

(branch).

NOTE: The location of

the FlowCon ABV does

not require lengths of

pipe before or after the

valve.

Technical Data

For further information and part number

selection pls. see FlowCon technote.



Fax: +45 5850 5730

Mail: [email protected]

, #04-04

Fax: +65 6841 8843

Mail: [email protected]

July 2003

Denmark Singapore USA

Cartridge Selection Chart

owX-type

(15-130 kPa)

C-type

(22-300 kPa)

D-type

(30-410 kPa)l/s white red white red white red

0.17 10.23 2 10.26 10.27 10.31 2

0.33 30.36 20.38 4 10.39 20.42 30.44 10.47 40.48 5 30.5 2

0.52 30.54 60.58 40.6 5

0.60 20.62 70.63 40.64 30.66 80.67 5

0.68 60.74 50.76 6 30.78 70.83 4 60.84 80.85 70.9 5

0.93 70.99 8 41.07 6 51.17 71.21 81.28 61.39 71.43 8

Accuracy +/- 10%

Accuracy +/- 10%

owY-TYPE G-TYPE

(15-130 kPa)* (20-130 kPa) (30-400 kPa)* (40-400 kPa)l/s grey* red blue black green grey* red blue black green

0.0081 10.0113 20.0117 10.0175 30.0189 2

0.0222 40.0247 30.0311 50.0325 40.0353 60.0383 70.0431 80.0450 30.0472 50.0528 60.0564 30.0575 40.0597 30.0619 40.0639 70.0669 40.0694 80.0781 40.0908 4

0.0922 50.0958 40.0978 10.1050 60.1136 70.1153 50.1183 20.1194 80.1358 30.1367 60.1369 50.1383 40.1456 70.1461 80.1469 10.1547 50.1614 60.1733 70.1764 60.1797 70.1811 50.1814 80.1861 20.1931 80.2097 30.2164 60.2181 70.2200 80.2306 50.2369 50.2372 60.2414 40.2525 70.2658 60.2689 70.2733 80.2772 8

0.3653 50.3692 60.3919 70.4078 8

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