Merrill's Product Catalog: Frost Proof Yard Hydrants
Water System Pressure Gallons Per Minute (GPM)
  0 5 10 15 20 25 30 35 40 45 50
20 PSI 18 GPM @ 20 PSI
30 PSI 23 GPM @ 30 PSI
40 PSI 27 GPM @ 40 PSI
60 PSI 32 GPM @ 60 PSI
80 PSI 37 GPM @ 80 PSI
100 PSI 42 GPM @ 100 PSI
  Note: Most common 1/2 hp submersible pumps output is 10 GPM.
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Water System Pressure Gallons Per Minute (GPM)
  0 5 10 15 20 25 30 35 40 45 50
10 PSI 12 GPM @ 10 PSI
20 PSI 18 GPM @ 20 PSI
30 PSI 24 GPM @ 30 PSI
40 PSI 30 GPM @ 40 PSI
60 PSI 38 GPM @ 60 PSI
80 PSI 45 GPM @ 80 PSI
100 PSI 51 GPM @ 100 PSI
  Note: Most common 1/2 hp submersible pumps output is 10 GPM.
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Merrill Quality Benefits Merrill®
Anyflow &
C-1000
Woodford
Y-34 & W-34
Baker Simmons Campbell

Teflon Packing
for longest life

Stainless Steel
Operating Rod

will not cut out
packing and leak

YES
YES
Draw Straps made of high carbon steel
for minimized wear
YES
Pivot Connector
held with two nuts

not rusting
set screw
YES
Dual Bypass
High Flow Rate
Valve Body

27 GPM @ 40 PSI

Self-lubricating plunger material
will not stick
like rubber

YES
YES
Number of Quality Benefits 6 1 0 1 1
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