Apollo Valves 129FC Fire System Pressure Control Valve

129FC Fire System Pressure Control Valve Description

The Model 129FC automatically reduces high pressure in building riser pipe to a pressure that can be easily handled by the components it supplies. The normally open, spring loaded pilot, sensing downstream pressure, responds to changes in pressure and causes the main valve to do the same. The net result is a constant modulating action of the pilot and main valve to hold the downstream pressure constant.

Apollo Valves 129FC Fire System Pressure Control Valve
129FC Fire System Pressure Control Valve


  • Maintains constant discharge pressure despite variations in demand or inlet pressure. Eliminates pressure fall off
  • Easily adjusted for discharge pressures ranging from 50-165 psi
  • Fully operated by line pressure; no external power source required
  • Soft seat for drip-tight closure
  • Easily cleaned, repaired and adjusted without removal from the line
  • Underwriters Laboratories listed, Control Number 18S5
  • Diaphragm assembly guided top and bottom is the only moving part of the main valve
  • UL / ULC Listed for pressure control service in sizes 1.5” thru 8”, globe or angle configuration
  • No packing glands or stuffing boxes to service
  • Horizontal or vertical mounting in all sizes
  • ANSI Flanged Class 150 or Class 300
  • Grooved end configuration available on 1.5” thru 6”
  • Screwed end configuration available on 1.5”, 2”, 2.5” and 3”
  • Wide range of materials available
  • Factory tested


Because the 129FC can experience a wide range of flow rates-ranging from zero, when the system is not being used, to the flow required by a single sprinkler, or full system demand-prop-er sizing is important. Use the smallest available valve that is consistent with the following maximum demand chart.

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Globe or Angle – 1.5”, 2”, 2.5”, 3”, 4”, 6”, 8”

Max Working Pressure

1.5” – 3” Screwed End: 300psi
1.5” – 6” Grooved End: 300psi
1.5” – 8” 150#ANSI: 250psi
1.5” – 8” 300# ANSI: 300psi

Temperature Range

Buna-N (Elastomers): 32° F to 180° F

Ref : www.apollovalves.com

Download Data Sheets : Apollo Valves 129FC Fire System Pressure Control Valve

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