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Installation Instructions for Any Flow® Series Yard Hydrant 

Almost NO Reason to Ever Dig up a Hydrant to Fix a Leak 

Under no circumstances should Merrill Manufacturing™ Yard Hydrants drain back into well or drinking water supplies! 

*Merrill Manufacturing™ disclaims all liability of any kind and voids the hydrant warranty for installations of this product where it can 

or could drain back into a drinking water supply.

 

Step 1:  

First be sure water line on which hydrant is to be installed has been thoroughly flushed to wash out foreign particles.  

Merrill Manufacturing™ will not warrant or accept any responsibility if the water line is not flushed out prior to attachment of 

hydrant. 

Step 2: 

Be sure the hydrant is installed with provision for drainage below the frost line. 

 

If hydrant is installed in a pit, the pit must have an open bottom or some form of drainage. 

 

If hydrant is buried in the ground, a few tile can be laid in gravel or coarse material to form a field system for the drain. 

 

If hydrant is buried in the ground and no tile are used, be sure to put a quantity of gravel, crushed rock or some coarse 

material, not sand, around the drain of the hydrant.  This will permit faster and better drainage. 

Step 3: Important -

 If hydrant is buried in the ground, it is a good idea to put a brick or large stone under the hydrant, because 

when the hydrant drains and this subsoil becomes wet, it will allow the hydrant to settle and thus put a strain on the pipe to which 

it is connected.  A brick or stone would carry this weight. 

Step 4: 

To connect the hydrant to the water line, just turn it onto the male thread connection for which it is intended.  Merrill 

Manufacturing™ has hydrant ells and tee fittings available for connection to flexible poly pipe. 

 

CAUTION:

 When the hydrant is tightened, be careful that it is not tightened so tightly that the hydrant head or valve body will 

be screwed further onto the pipe and thus change the adjustment of the hydrant.  If this should happen, refer to the adjustment 

section for the proper adjustment. 

Step 5: Important - 

Before backfilling the trench, turn on the water.  Then turn on the hydrant by raising the handle to let the 

water flow.  If the hydrant is not working properly, refer to the adjustments below.  Merrill Manufacturing™ will not accept any 

responsibility for digging up the hydrant if the installer fails to flush out the water line before attaching hydrant to water 

line andto check the hydrant for proper operation before backfilling the trench. 

WARNING:

 If the ground freezes at or below the bottom of this hydrant, your warranty is void and damage due to improper 

installation or act of nature is not covered by manufacturer. 

CAUTION:

 Use wrench on valve body and fitting only!  Do not use wrench on this stand pipe!  Additional tightening or 

loosening will change adjustment of hydrant and could restrict water flow or may make the hydrant inoperative. 

CAUTION:

 If the hose is attached to the nozzle of the hydrant when hydrant is shut off, back siphoning can occur if end of hose 

is left in container of liquid.  The end of the hose must be left open to the air so hydrant can drain back.  

 

Any Flow®

 Yard Hydrant Adjustment Instructions

 

Summary of Contents for Any Flow Series

Page 1: ...ick or stone would carry this weight Step 4 To connect the hydrant to the water line just turn it onto the male thread connection for which it is intended Merrill Manufacturing has hydrant ells and tee fittings available for connection to flexible poly pipe CAUTION When the hydrant is tightened be careful that it is not tightened so tightly that the hydrant head or valve body will be screwed furth...

Page 2: ...nut upward only one thread then tighten the lower nut upward toward the G 25 pivot connector or raise the G 25 then tighten the top nut To determine if the water is not draining out of the stand pipe turn the hydrant on and let the water flow Then push down the handle to close the hydrant with a cup of water covering the nozzle If the water in the cup siphons back through the hydrant the plunger i...

Page 3: ...oving the handle up and down Sometimes this may have to be repeated again and again depending on how long the leak has gone without being fixed Small adjustments are much better than turning the nut a full turn or more right away as that may not be necessary If the adjustments do not cure the leak a new packing piece must be installed under the packing nut There is no reason to shut off the water ...

Page 4: ...order If it is not do the adjustment as described above Leaking out of the Drain Hole What you need to know is if it is leaking in the off position or the on position These are two completely different adjustments On Position Leak If it is leaking when in the on position the plunger may be too low which means the plunger is not coming up far enough to shut off the drain hole when the hydrant is ru...

Page 5: ...d There is no reason to ever dig up a hydrant to fix a leak It is a 100 to 1 odds that a hydrant needs to be dug up to be fixed Consult with factory if system pressure is over 100 psi before installation of this product ...

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