B531 Regulator



ITRON / ACTARIS / SCHLUMBERGER / SPRAGUE B531 GAS REGULATOR.
Applications
Use the B531 for light utility, industrial and commercial application. The twin parallel design should be used where a high degree of safety and overpressure protection are required such as schools, hospitals and community centers. This regulator is an excellent replacement for parallel regulator piping systems.

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


    • Descriptions
  • B531N – The B531N 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.
  • B531R – The B531R is the internal relief version of the B531R Series. This model features twin 1” internal relief valves. Due to its excellent relief characteristics, the B531R can be used on any inlet system up to the regulator’s maximum operating pressure rating.
  • B531IMN – The B531 IMN is equipped with an internal monitor (IM) orifice that operates upon failure of the main valve. The “N” designation signifies no internal relief valve.
  • B531IMR – The B531IMR 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 open in the event that both the main seat and the internal monitor cannot function.
  • B531IMRV – The B531IMRV 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 “V” option which gives a warning indication that the regulator is on monitor control in the event of main valve failure. The vent-hole “V” 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 54 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 protectin with internal monitor plus internal relief options
    • Specification Sheet
    Click Here
    Sizing Chart
    Click Here
    Regulator Request Form
    Click Here

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