B838 Regulator



ITRON / ACTARIS / SCHLUMBERGER / SPRAGUE B838 GAS REGULATOR.
Applications
The B838 series regulators are designed for commercial and industrial applications. The twin unit concept provides excellent control of widely varying inlet pressures and fluctuating flow rates. With the twin internal relief valves and internal monitor available, these regulators have unmatched over pressure protection, while providing significant cost savings from expensive piping and relief valve sets.

Option Designations
  • N - (See description below)
  • R - (See description below)
  • IMN - (See description below)
  • IMR - (See description below)
  • IMRV - (See description below)


    • Descriptions
  • B838N –The B838N is a spring loaded self operated regulator with no internal relief. This regulator can be used on low or intermediate inlet pressures where an internal relief valve is not required
  • B838R – The B838R is the largest internal relief service regulator. This model features twin 2-1/2” internal relief vents that allow the B838R to be used on any inlet system up to the regulator’s maximum operating pressure rating
  • B838IMN – The B838IMN is equipped with an internal monitor (IM) orifice that operates upon failure of the main valve. This orifice features the safety advantage of a second gas-tight lock-up seat if the primary valve seat fails to produce the adjusted outlet pressure. The monitor also controls gas flow between the failed open flow and no flow, thereby providing complete secondary regulation. The “N” designation signifies no internal relief valve
  • B838IMR –The B838IMR is equipped with an internal monitor (IM) orifice as a primary form of overpressure protection that operates upon failure of the main valve seat. The B531IMR is also equipped with secondary twin internal relief valves that open in the event that both the main seat and the internal monitor cannot function
  • B838IMRV – The B838IMRV is equipped with an internal monitor (IM) orifice as a primary form of overpressure protection that operates upon failure of the main valve. It is also equipped with the vent-hole option, which gives a warning indication that the regulator is on monitor control in the event of main valve failure. The vent-hole option consists of a 1/16” hole in the sliding orifice that allows a small amount of gas to bleed downstream, which causes the relief valves to weep gas. In the unlikely event the main valve and the monitor valve fails to function, the B531IMRV is equipped with secondary or back-up twin internal relief valves

    Features
  • Interchangeable brass orifice
  • Combined 226 in2 of diaphragm area
  • Twin Spring-loaded internal relief valve assemblies
  • Field interchangeable adjustment springs
  • No special adjustment tools required
  • Controlled size breather orifice eliminates pulsation and provides normal actuation at low flows
  • Wide range of valve body sizes

    Benefits
  • Eliminates parallel regulator piping installations
  • Light weight
  • Fast response protects equipment from shock damage
  • Field inspection of the internal monitor and internal relief valves without customer shut-off or by-pass
  • Unmatched overpressure protection with internal monitor plus internal relief options
    • Specification Sheet
    Click Here
    Sizing Chart
    Click Here
    Regulator Request Form
    Click Here

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