Watson McDaniel Pressure Regulator 1″ Npt Mod. O

Watson McDaniel Pressure Regulator 1″ Npt Mod. O

$349.00

  • Stainless steel single seated
  • Direct acting diaphragm
  • Quickly and easily serviceable in line without special tools
  • Maximum working initial pressure up to 250 psi (17.2 bar)
  • Valve is simple to adjust
  • Iron body with female NPT connections
  • Engineered and recommended for mainline and high capacity process service heating applications
  • Replaceable springs and diaphragm
  • Standardly furnished with stainless steel valve disc

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. This style of regulator does not require an external sensing line. Set pressure is controlled by turning an adjustment screw with lock nut that increases or decreases spring force above the diaphragm. Several spring ranges are available, depending upon the downstream pressure that needs to be maintained. O-Series contains hardened stainless steel seat and disc for extended service life. Phosphor Bronze Diaphragm specifically designed for Steam service is considered a preferred choice over Stainless Steel diaphragms which are prone to work-hardening and potential cracking. Viton diaphragms are specifically designed for water, air, gases and other liquid service and have a working temperature range up to 300°F.

Product Features

  • Service:  Steam
  • Size: 1″  Threaded
  • Reduced Pressure Range (psig):  40 – 85
  • Maximum working initial pressure up to 250 psi (17.2 bar)
  • Valve is simple to adjust
  • Iron body with female NPT connections
  • Seat & Disc:  Hardened 420 Stainless Steel
  • Replaceable springs and diaphragm
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