Multi outlet dry barrel hydrants

1. Pick a Flow hydrant and a static/residual hydrant.  The residual should be the next one line and downstream to the flow hydrant.

2. Remove one 2 ½ cap from the static/residual hydrant.  Remove two 2 ½ caps from the flow hydrant.  Flush both hydrants until clear.  Shut both hydrants.

3. Attach one cap pressure gauge on the static/residual hydrant, and then open the petcock.  Open the hydrant and bleed air thru pet cock, close pet cock and take static reading.  Leave open.

4. Place on cap gauge on one of the open 2 ½ orifices.  Completely open the flow hydrant, insert and record a pitot reading from the flowing, open 2 ½ orifice.  Remember to bleed air from pitot by pushing button on handle for several seconds.  Also, open and bleed any air on the cap gauge, then take a reading while hydrant is open and water is flowing.

5. Take and record the residual pressure on the hydrant cap gauge on the flow hydrant.

6. Take and record the residual pressure at the (residual) secondary location.

7. Close the hydrant slowly being careful not to cause a “water hammer” and spike the pressure above the normal static pressure on the gauge at the secondary location. Check hydrant for proper drain.

8. Check and record coefficient of flow orifice.

ALWAYS  .9 WHEN USING HOSE MONSTER

1. Verify that all valves closed properly, are not seeping or leaking, and that the hydrant is ready for service.

1. Perform math by following formula on hydrant flow report.  Use wire brush to clear any old loose paint on bonnet, and paint bonnet according to chart below:

1. Next remove and clean all threads of the other caps on the flow hydrant.  Grease the fitting at the top if it has one.

2. Remove cap gauge from flow hydrant leave cap on residual hydrant.

3. Flush next hydrant down from previous residual hydrant (former residual hydrant becomes flow).  Once the water is clear, place cap gauge on residual and flow test hydrant.

4. Place flyers in mailboxes as you go thru neighborhood!

DETAILED ASSIGNMENT

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