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Watson McDaniel O-Series Regulators for Steam

The O-Series direct-operated pressure regulators with heavy-duty cast-iron bodies and internal strainer are suitable for a wide range of applications in the low-to-moderate flow range. Applications include small heaters, humidifiers, various hospital equipment, tire molds, as well as many other general uses.

Included Features:

  •  Hardened stainless steel seat and disc for extended service life (55 Rc)
  • Phosphor Bronze diaphragm for Steam Service
  • Viton diaphragm for up to 300ºF for Water, Oil & Air Service
  • Double spring available for extended outlet pressure range
  • Integral stainless-steel strainer on 3/4” HC, 1”, 1-1/4”, 1-1/2” & 2”

Watson-McDaniel O-Series Pressure Regulating Valves

Watson-McDaniel O-Series Pressure Regulating Valves Installation Manual

Showing 1–25 of 42 results

  • Watson McDaniel O-11-N-09-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-11-N-09-B Pressure Regulating Valve (For Steam)

    O-11-N-09-B
    Sale!
    Original price was: $ 470.00.Current price is: $ 398.09.
  • Watson McDaniel O-11-N-10-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-11-N-10-B Pressure Regulating Valve (For Steam)

    O-11-N-10-B
    Sale!
    Original price was: $ 470.00.Current price is: $ 398.09.
  • Watson McDaniel O-11-N-13-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-11-N-13-B Pressure Regulating Valve (For Steam)

    O-11-N-13-B
    Sale!
    Original price was: $ 470.00.Current price is: $ 398.09.
  • Watson McDaniel O-11-N-14-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-11-N-14-B Pressure Regulating Valve (For Steam)

    O-11-N-14-B
    Sale!
    Original price was: $ 470.00.Current price is: $ 398.09.
  • Watson McDaniel O-12-N-09-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-12-N-09-B Pressure Regulating Valve (For Steam)

    O-12-N-09-B
    Sale!
    Original price was: $ 481.00.Current price is: $ 407.77.
  • Watson McDaniel O-12-N-10-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-12-N-10-B Pressure Regulating Valve (For Steam)

    O-12-N-10-B
    Sale!
    Original price was: $ 481.00.Current price is: $ 407.77.
  • Watson McDaniel O-12-N-13-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-12-N-13-B Pressure Regulating Valve (For Steam)

    O-12-N-13-B
    Sale!
    Original price was: $ 481.00.Current price is: $ 407.77.
  • Watson McDaniel O-12-N-14-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-12-N-14-B Pressure Regulating Valve (For Steam)

    O-12-N-14-B
    Sale!
    Original price was: $ 481.00.Current price is: $ 407.77.
  • Watson McDaniel O-13-N-09-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-13-N-09-B Pressure Regulating Valve (For Steam)

    O-13-N-09-B
    Sale!
    Original price was: $ 491.00.Current price is: $ 416.24.
  • Watson McDaniel O-13-N-10-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-13-N-10-B Pressure Regulating Valve (For Steam)

    O-13-N-10-B
    Sale!
    Original price was: $ 491.00.Current price is: $ 416.24.
  • Watson McDaniel O-13-N-13-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-13-N-13-B Pressure Regulating Valve (For Steam)

    O-13-N-13-B
    Sale!
    Original price was: $ 491.00.Current price is: $ 416.24.
  • Watson McDaniel O-13-N-14-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-13-N-14-B Pressure Regulating Valve (For Steam)

    O-13-N-14-B
    Sale!
    Original price was: $ 491.00.Current price is: $ 416.24.
  • Watson McDaniel O-14-N-0007-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0007-B Pressure Regulating Valve (For Steam)

    O-14-N-0007-B
    Sale!
    Original price was: $ 768.00.Current price is: $ 650.98.
  • Watson McDaniel O-14-N-0008-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0008-B Pressure Regulating Valve (For Steam)

    O-14-N-0008-B
    Sale!
    Original price was: $ 768.00.Current price is: $ 650.98.
  • Watson McDaniel O-14-N-0009-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0009-B Pressure Regulating Valve (For Steam)

    O-14-N-0009-B
    Sale!
    Original price was: $ 768.00.Current price is: $ 650.98.
  • Watson McDaniel O-14-N-0010-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0010-B Pressure Regulating Valve (For Steam)

    O-14-N-0010-B
    Sale!
    Original price was: $ 768.00.Current price is: $ 650.98.
  • Watson McDaniel O-14-N-0809-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0809-B Pressure Regulating Valve (For Steam)

    O-14-N-0809-B
    Sale!
    Original price was: $ 1,152.00.Current price is: $ 975.26.
  • Watson McDaniel O-14-N-0910-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-14-N-0910-B Pressure Regulating Valve (For Steam)

    O-14-N-0910-B
    Sale!
    Original price was: $ 1,152.00.Current price is: $ 975.26.
  • Watson McDaniel O-15-N-0007-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0007-B Pressure Regulating Valve (For Steam)

    O-15-N-0007-B
    Sale!
    Original price was: $ 1,088.00.Current price is: $ 922.02.
  • Watson McDaniel O-15-N-0008-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0008-B Pressure Regulating Valve (For Steam)

    O-15-N-0008-B
    Sale!
    Original price was: $ 1,088.00.Current price is: $ 922.02.
  • Watson McDaniel O-15-N-0009-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0009-B Pressure Regulating Valve (For Steam)

    O-15-N-0009-B
    Sale!
    Original price was: $ 1,088.00.Current price is: $ 922.02.
  • Watson McDaniel O-15-N-0010-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0010-B Pressure Regulating Valve (For Steam)

    O-15-N-0010-B
    Sale!
    Original price was: $ 1,088.00.Current price is: $ 922.02.
  • Watson McDaniel O-15-N-0809-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0809-B Pressure Regulating Valve (For Steam)

    O-15-N-0809-B
    Sale!
    Original price was: $ 1,381.00.Current price is: $ 1,168.86.
  • Watson McDaniel O-15-N-0910-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-15-N-0910-B Pressure Regulating Valve (For Steam)

    O-15-N-0910-B
    Sale!
    Original price was: $ 1,381.00.Current price is: $ 1,168.86.
  • Watson McDaniel O-16-N-0008-B Pressure Regulating Valve (For Steam)

    Watson McDaniel O-16-N-0008-B Pressure Regulating Valve (For Steam)

    O-16-N-0008-B
    Sale!
    Original price was: $ 1,268.00.Current price is: $ 1,074.48.