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Pressure regulating apparatus including conduit

  • US 10,539,123 B2
  • Filed: 10/28/2013
  • Issued: 01/21/2020
  • Est. Priority Date: 11/30/2012
  • Status: Active Grant
First Claim
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1. A manifold suitable for connecting an outlet of a booster pump to an inlet of a backing pump, the manifold comprising:

  • a pressure regulating apparatus comprising;

    an inlet comprising an inlet orifice;

    an outlet comprising an outlet orifice;

    a conduit interposed between, and in fluid communication with, the inlet and the outlet, wherein the cross-sectional area of the conduit is greater than that required to meet conductance requirements of the inlet and the outlet and is configured such that a free volume is provided to accommodate in-rush gases due to pressure differences in the system being pumped prior to the in-rush gases being transferred to the backing pump to thereby reduce pressure build-up between the booster pump and the backing pump during such an in-rush event, and wherein the inlet orifice and the outlet orifice are aligned to at least partially overlap when viewed along a direction, in use, of gas flowing through the pressure regulating apparatus such that there is a direct line of sight through the manifold;

    a conduit portion having an inlet orifice sealingly connectable, in use, to the outlet of the booster pump, and an outlet orifice sealingly connectable, in use, to the inlet of the backing pump; and

    at least one expansion chamber portion in fluid communication with the conduit portion, wherein the combined volume of the conduit portion and the at least one expansion chamber portion is between approximately 2 and 30 times volume of the conduit portion.

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