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LXF-80-150

COMBINATION WATER METER
This type of water meter can be used for a remote reading transmission system as equipped with a built-in sensor.

APPLICATION

# For measurement of high flows of cold potable water passing through the pipeline.

FEATURES

#Wide measuring range: From Qmin of the small caliber water meter to Qmax of the large caliber water meter

# As a dry meter, deposits in the register are avoided. This ensures a clear reading in long term service.

#The main register may rotate more than 360 degreesfor easily reading in any position.

# Low head loss.

# Lower starting flow.

# Novel structure, simple maintenance.   

#Can be equipped with reed switch option.

#Particularly suited in commercial, institutional places of assembly and facilities with fluctuating usage and flow rates.

.WORKING PRINCIPLE

#A changeover spring valve diverts flow to the appropriate meter, opening or closing according to pressure variations by changes in flow rate.

#At low flow rate, the changeover valve closes and only the small meter in operation 2 water flows through the bypass meter, and the usage is recorded on its register.

#When the flow rate increases, pressure is exerted on the large meter, until the flow rate reaches approximately one half the capacity of the bypass meter.

At this point, the drop in pressure causes the valve to open 1, and water flows through both the main meter and bypass meter, and the overall consumption is read by combining the main and bypass registers.

#When flow is decreasing, the process in reversed. The valve is closed and water flows through the small meter.

CONSTRUCTION

#The meter model LXF-50-200 combines a large caliber water meter (model LXLC-B) on the main line, a small water mete (model LXSC-E) on the bypass line, and a flow changeover valve.

Annotation: LXLC-B removable element woltman water meter.

                 LXSC-E multi-jet dry type vane wheel water meter.

WORKING CONDITION

#Water temperature: +40≧

#Water pressure:+1.6Mpa

MAXIMUM PERMISSIBLE ERROR
#In the lower zone from Qmin inclusive up to but excluding Qt is\5%b)

In the upper zone from Qt inclusive up to and including Qs is \2%

INDICATION

#Cubic meter(m3) and U.S. gallon (USG) for selecting

INSTALLATION

#The meter must be installed with the direction of the flow as indicated by the arrow cast in the meter body.

#A horizontal position with the register face upwards is recommended.

#The meter must have 10 diameters straight pipe ahead of the meter and 5 diameters straight pipe after to insure proper flow through the meter.

#The valves must be installed in the front and the back of the water meter.

ATTACHMENT

#With every water meter, there will be two flange gaskets.

#If you need the connecting flanges(two pieces), please specially request that.

No.

Name

Qty

No.

Name

Qty

No.

Name

Qty

1

Body(mainwatermeter

1

9

Adapting flange

1

17

Bolt

2

2

LXLC-B except for the body

1

10

Coupling gasket 2

1

18

Bypass meter (LXSC-E)

1

3

Flat washer

8

11

Bolt

2

19

Nut

3

4

Bolt

8

12

Flat washer

2

20

Coupling 2

1

5

Flange o-ring

1

13

Street elbow 2

1

21

Coupling o-ring

1

6

Changeover vale

1

14

Coupling gasket

3

22

Street1elbow111with1non-return valve

1

7

Spring washer

8

15

Connecting plate

1

23

Coupling 1

1

8

Nut

8

16

Spring washer

2

24

Coupling gasket 1

1

MAIN TECHNICAL DATA COMFORMS TO Q/ZN 184-2003(company standard)

Type

Size(mm)

qs
Max Flow

qp
Nominal Flow

qt
Transitional Flow

qmin
Min. Flow

Min.
 Reading

Max.
Reading

m3/h

m3

LXF-80

80mmx20mm

80

40

0.20

0.05

0.0001

999999+99999

LXF-100

100mmx20mm

120

60

0.20

0.05

0.0001

999999+99999

LXF-150

150mmx40mm

300

150

0.80

0.20

0.001

999999+99999

DIMENSIONS AND WEIGHTS

Type

Size
DN

Length
L

Width
W

Height
H

Height
G

Connecting flange

Weight
kg

mm

D
Outer dia.

D1
Bolt cirle dia.

Connecting Bolt
nxM

LXF-80

80mmx20mm

370

310

276

400

200

160

8XM16

27.5

LXF-100

100mmx20mm

370

320

286

400

220

180

8XM16

33

LXF-150

150mmx40mm

500

445

345

500

285

240

8XM20

64

Type

lncr easingopen flow rate(m3/h)

Decr easingClose flow rate(m3/h)

LXF-80

1.8

0.8

LXF-100

2.1

1.2

LXF-150

6.0

4.2



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AddrNo.16 at Hailian Load,Lianyungang,Jiangsu Fax0518-86097905 Tel0518-86097577 86097624