Iron Valves

Iron Valves are available in a wide range of sizes and flow rates to cover most applications. The unique design allows a straight flow pattern with low friction loss. A direct sealing diaphragm, the valves only moving part, operates by pipeline or external pressure. Sizes range from 1″ to 24″ with a variety of control functions and connection options.

Features & Benefits

  • Unique design allows a straight flow pattern with the lowest friction loss in the industry.
  • Superb hydraulic performance with low operating pressure.
  • Direct sealing diaphragm for positive opening and closing.
  • Simple inline installation with minimal parts provides low maintenance requirements.
  • Iron valves have protective polyester coating for resistance to corrosive elements and UV protection.


  • Excellent for high pressure applications.

Iron Valves Operation

3-Way Control Valves

The 3-Way control valve only ports water (or air) into the control chamber to close the valve or releases it from the control chamber to open the valve. This non-continuous porting technique allows for full opening of the main valve when operating conditions require the valve to be fully open.

Manual Valve Operation With A 3-Way Selector

  • CLOSED (C): Upstream pressure or pressure from an external source is applied to the control chamber. Initiated by the spring, the diaphragm is pressed down to close the valve drip-tight.
  • OPEN (O): Relieving the water or air pressure to the atmosphere from the control chamber causes the valve to open.
  • AUTOMATIC (A): The automatic port of the 3-Way selector is connected to a solenoid, hydraulic relay or pilot which controls the valve. The common port of the 3-Way selector connects the control chamber to either A, O or C, depending on the direction the selector is pointed.

Iron Valves Technical


  • Optional Functions: Manual, Electric, Pressure Reducing and Pressure Sustaining
  • Connections:
    Threaded ANSI NPT Female
    Grooved ANSI/AWWA C-606
    Flanged ANSI CL-125


  • Body and Bonnet:
    Cast Iron (ASTM A 125 CLB)
  • Spring: Stainless Steel (AISI 302)
  • Nuts, Bolts, Washers:
    Stainless Steel (BS 5216)
  • Diaphragm: Natural Rubber



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