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Pressure Restricting Fire Valve Procedures

  1. Assemble and close valve
  2. Back off 4 set screws
  3. Allow bottom side of the gauge stop sleeve to rest upon the packing nut.
  4. Insert the gauging stem into the gauge stop sleeve until the dash directly above the 0 setting is flush with the bottom side of the gauge stop sleeve.
  5. Temporarily tighten one set screw which will hold the gauging stem in the gauge stop sleeve.
  6. Push upward on the bottom of the gauging stem until it is stopped by the packing nut.
  7. Tighten the two set screws
  8. Back off the set screw.
  9. Determine inlet pressure.
  10. Consult graph below to find the correct open position for the valve to produce a discharge pressure desired with the inlet pressure available.
  11. Keeping valve closed set gauging stem to setting desired and tighten two set screws.

1½" Pressure Reducing Valve
50' of 1½" Rubber Lined Fire Hose Combination Nozzle
Adjustment
Position		 InletPressure
PSI		 NozzlePressure
PSI		 Rate of Flow
GPM
15 98.0 80 103
14 98.0 80 103
13 98.0 80 103
12 102.5 80 103
11 107.0 80 103
10 112.0 80 103
9 119.0 80 103
8 129.0 80 103
7 147.0 80 103
6 183.0 80 103
5 235.0 80 103
4 340.0 80 103

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