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ZL-4M (ZL47F) Series of Self-operated Flux Control Valve
Patent Number: 01267874.0


Product Introduction
ZL-4M (ZL47F) series of self-operated flux control valve is a kind of valve that can fix the flux automatically and balance the hydraulic regime. It can be set with different flux according to customers demand and can maintain constant flux by itself. It can be used in some areas that need fixed flux in the water system of centralized heat-supply and centralized air-conditioning to make the whole pipeline regulated at one process and the regulating process simplified into a process of flux distribution. Further it is avoided that the flux re-distribution might need during heat source switching process and thus prevented the hydraulic maladjustment of the pipeline.
   
Function & Characteristics

●With flux control precision ±5%
●The flux can be set as per the needs of controlled pipeline and settings can be   locked. 
●Excess pressure head can be eliminated automatically from the pipeline
●No interference occur when flux is regulated between branch pipes and sub-branch pipes
●Direct display of flux and number of turns to be opened 
●Nominal pressure: 1.6MPa2.5MPa;
●Medium temperature: 0-150°C
●Working pressure difference: 20-600KPa;
●Valve body material: Grey cast iron, cast carbon steel, forged copper alloy
●Inner parts material: Copper alloy, stainless steel 

Instruction for type selection
Reduced type should be avoided unless when the flux is extremely low.  

DN

L

H1

H

Flux m3/h

20

110

53

128

0.1-1.5

25

125

53

128

0.2-2

32

180

174

332

0.5-4

40

200

158

321

1-6

50

230

169

362

2-10

65

290

212

415

3-15

80

310

240

450

5-25

100

350

260

530

10-35

125

400

320

560

15-50

150

480

350

700

20-80

200

495

380

750

40-160

250

622

500

1250

75-300

300

698

500

1140

100-450

350

787

500

1050

200-650

400

978

630

935

250-900

450

978

695

1030

280-1100

500

1016

575

1025

320-1400

600

1295

872

1310

380-1750

700

1448

952

1407

450-1900

 

 
 
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