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4

NOTE

The  meter  installation  should  include  a  valve 
downstream  from  the  meter  to  prevent  water  loss 
during meter servicing or removal from the line.

NOTE

The system should be  installed so that the meter can be 
read at a convenient outdoor location. For meters that 
are  located  indoors,  a  remote  reading  system  is 
recommended.  This  eliminates  access  problems  and 
avoids  customer  complaints  concerning  strangers 
entering the home. 

WARNING

Before  starting  any  disassembly  operation,  the  water 
line must be depressurized. Removing a meter that is 
under line pressure can result in serious personal injury  

Ÿ

The meter is a precise measuring device and although robust in design 
and  construction,  should  be  handled,  transported,  and  installed  with 
care. The meter should remain within its protective packaging to the point 
of installation. 

Ÿ

Storage temperatures shall remain within the range of -20°C to +60°C , 
avoiding direct sunlight. 

Ÿ

Special  fittings  and  accessories  are  available  to  provide  easier  meter 
installation and proper alignment. 

Ÿ

All meters should be installed according to local standards or water utility 
regulations.

Ÿ

Close the meter's inlet-side valve. 

Ÿ

Open a faucet and wait until water flow stops to depressurize the system. 
Do not remove the meter until the flow stops. 

Ÿ

Check valves and make necessary repairs to shut-off valve or inlet side 
valve if necessary. 

Ÿ

For proper sealing, use new meter gaskets when changing the meter. 

Ÿ

Do not use thread sealant, pipe dope or meter coupling threads, meters 
are sealed by the gasket only. 

Ÿ

Close  the  meter's  outlet-side  valve.  Protect  the  floor  below  the  meter 
against potential spills or leaks that could occur. Protect the coupling area 
from debris so that the new meter will not be contaminated or damaged. 

3.  INSTALLATION 

Summary of Contents for MJ

Page 1: ...WATER METERS Installation Operating Manual MJ PD WP...

Page 2: ...SPECIFICATIONS 1 1 2 SYMBOLS WARNINGS 3 INDEX Davis Shirtliff Ltd 2020 Contents herein are not warranted 3 INSTALLATION 4 4 OPERATION MAINTENANCE 7 5 TERMS OF WARRANTY 9...

Page 3: ...r DN15 and DN20 sizes and brass for larger sizes Meters are supplied with inlet strainers and union connectors PD Rotary piston type meters that provide high accuracy over a wide flow range The mechan...

Page 4: ...9999 999999 40 0 2 1 15 1 5 3 15 10 40 0 2 1 20 2 5 6 10 3 5 5 12 20 7 50 120 200 70 16 16 16 16 40 40 40 40 0 25 0 24 0 2 0 25 1 1 0 9 1 1 20 2 5 5 25 16 40 0 25 1 50 15 30 7 5 16 50 2 0 02 0 08 65 2...

Page 5: ...lic CAUTION Instructions should be carried out by a qualified professional with parts equipment approved by the local codes and regulations WARNING Meter must not be used as a lever or crowbar to stra...

Page 6: ...otective packaging to the point of installation Storage temperatures shall remain within the range of 20 C to 60 C avoiding direct sunlight Special fittings and accessories are available to provide ea...

Page 7: ...e properly aligned to avoid cross threading damage stripping to the meter ends This is especially important for the engineered composite polymer meter The best method for properly starting meter coupl...

Page 8: ...lowly to pressurize the downstream consumer side of the system Turn off the consumer faucet when normal water flow occurs Ensuring that all consumer faucets are shut observe the low flow detector in t...

Page 9: ...ance as shown in Fig 2 Volumetric meters may also be installed vertically or at an incline Ensure that the installed meter will be easily accessible for reading inspection and service Protect the mete...

Page 10: ...16 bar If there is a pressure regulator verify that the regulator works and is adjusted correctly The service pipe entering and exiting the meter box should be properly bedded to ensure that it is no...

Page 11: ...bility In lieu of any warranty condition or liability implied by law the liability of Dayliff in respect of any defect or failure of equipment supplied is limited to making good by replacement or repa...

Page 12: ...INS450A 02 20 www davisandshirtliff com...

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