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Piston valve with annular passages

  • US 10,633,262 B1
  • Filed: 06/15/2018
  • Issued: 04/28/2020
  • Est. Priority Date: 06/08/2011
  • Status: Active Grant
First Claim
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1. Apparatus comprising:

  • a valve body, wherein the body includesa first external port,a second external port, wherein the first port is fluidly connected to the second port through a first passage within the body,a third external port,a fourth external port, wherein the third port is fluidly connected to the fourth port through a second fluid passage within the body,a third passage within the body, wherein the third passage extends fluidly between the first passage and the second passage,a first rotatable valve element within the body,a first rotatable valve stem operatively connected to the first valve element, wherein the first valve stem is accessible from outside the body,wherein the first valve element is rotatably positionable via rotation of the first valve stem to fluidly connectthe first and second ports only (position A), orthe first port and the third passage only (position B),a second rotatable valve element within the body,a second rotatable valve stein operatively connected to the second valve element, wherein the second valve stem is accessible from outside the body and is adjacent the first valve stem,wherein the second valve element is rotationally positionable via rotation of the second valve stem to fluidly connectthe third and fourth ports only (position C), orthe third port and the third passage only (position D),a first removable manually engageable handle, wherein the first valve stem is releasably engageable with the first removable manually engageable handle, wherein the first valve element is changeable between positions A and B through manual movement of the first handle,a second removable manually engageable handle, wherein the second valve stem is releasably engageable with the second removable manually engageable handle,wherein the second valve element is changeable between positions C and D through manual movement of the second handle,an actuator, wherein with the first and second handles disengaged from the first and second valve stems respectively, the body is engageable with the actuator, wherein the actuator includesa unitary actuator housing,at least one motor within the actuator housing,wherein with the actuator housing operatively engaged with the first and second valve stems, the actuator is selectively operative torotate the first valve stem to selectively position the first valve element in position A or position B,rotate the second valve stem to selectively position the second valve element in position C or position D.

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