RDM-UM-00059-EN-05
INSTALLATION INSTRUCTIONS
To prepare for meter installation, follow these steps:
1. Close the meter's inlet-side valve.
2. Open a faucet and wait until water flow stops, to depressurize the system. Do not remove the meter until the
flow stops.
3. Check valves and make necessary repairs to the curb (shut-off) valve or inlet side valve if necessary.
4. 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 damaged or contaminated.
5. To replace an existing meter, continue with Step 6. To install a new meter, skip to Step 8.
6. Loosen meter couplings or flange bolts and remove the meter and the old gaskets in the coupling nuts.
MPORTANT
I
Replace the entire connection set when you replace the meter (or earlier, if necessary).
7. Clean the coupling nuts or flange ends, removing any pipe dope or dirt from the threads or flange ends.
8. Check the existing setting for proper alignment and spacing. Correct any misalignment and spacing in the setting.
9. Place the new connection gaskets inside the connection coupling nuts.
10. Install the meter in the pipeline in a horizontal position so that the flow arrow on the meter housing points in the
same direction as water flow.
5/8 in. to 2 in. Threaded Ends
11. Start the coupling nuts at the threaded meter ends. Verify that the nuts are properly aligned to avoid cross-threading
or damage to the meter ends. This is especially important for the engineered polymer meter.
An effective method for starting a coupling nut is:
a. Position the nut squarely against the meter's spud end.
b. Turn the nut counterclockwise (in reverse) while holding the nut against the meter spud end. When the first
threads on both the nut and the spud end coincide, you will hear a slight click and feel the nut move into the
starting position.
c. Tighten the nut by hand until it is snug.
d. With an open-end wrench, apply a partial turn. Do not over tighten. For plastic swivel connections, a
one-quarter turn is usually sufficient.
1-1/2 in. to 2 in. Elliptical Flange Ends
12. With meter and gaskets in place, tighten the flange connection bolts. Verify the nuts are properly aligned to avoid
damage to the flanged ends.
PROTECT AGAINST LEAKAGE
Before turning on the service water, use care to protect against potential leakage.
1. Shut off the valves on both the inlet and outlet sides of the meter.
2. Open the curb (shutoff) valve slowly to pressurize the service line to the meter.
3. Slowly open the meter's inlet-side valve to fill the meter.
4. Check for leaks around the meter and its connections.
5. Slowly open the meter's outlet-side valve to pressurize the consumer side of the system.
6. Open a faucet to allow entrapped air to escape.
7. Once water is flowing normally, turn off the faucet.
Installation Manual
Page 3
January 2018
