Bypass valve
First Claim
1. A control valve, comprising:
- (a) a housing defining a valve chamber having a substantially uniform cylindrical wall;
(b) a valving member disposed within said chamber and mounted for rotational movement between predetermined positions;
(c) a pair of spaced apart, inlet/outlet ports opening into said chamber through said cylindrical wall and at least one intermediate port opening into said chamber;
(d) means communicating a second intermediate port with said chamber;
(e) said valving member defining a passage portion, said passage portion being in fluid communication with at least a portion of said cylindrical wall;
(f) seal means around said passage portion and sealing engaging said cylindrical wall whereby a passage is formed having a predetermined extent and which is fluidly isolated from said valve chamber;
(g) said predetermined extent of said passage and said inlet/outlet port spacing being arranged such that in one position the passage extends between and fluidly cross communicates said pair of inlet/outlet ports, in another position it communicates one of said inlet/outlet ports with said first intermediate port and in third and fourth positions said passage portion formed in said valve member overlies one of said inlet/outlet ports to fluidly isolate said inlet/outlet port whereby flow out of said inlet/outlet port into said valve chamber is blocked;
(h) movement control means for limiting movement in said valving member between predetermined positions.
2 Assignments
0 Petitions
Accused Products
Abstract
A bypass/diverter valve for controlling the flow of fluid from a source to a fluid treatment device such as a water softener. The valve includes a valve housing defining a circular chamber having a cylindrical wall into which three spaced ports open into. Two of the ports form inlet/outlet ports communicating with connecting conduits. The third port forms an intermediate port that communicates with the input to the water softener. The valve housing also defines a second intermediate port communicating with the output of the water softener and which communicates with the valve chamber through a passage arrangement. A plug-like valving member is rotatable within the chamber and includes a recess which together with the chamber wall defines a passage for selectively communicating one of said inlet/outlet ports with said first intermediate port while concurrently communicating said other inlet/outlet port with the second intermediate port or alternately for communicating said first inlet/outlet port with said second intermediate port while concurrently communicating the second inlet/outlet port with said first intermediate port. The valving member is also positionable to block flow out of either of said inlet/outlet ports. The plug member includes a recess for communicating fluid from the passage to one of the inlet/outlet ports when the valving member is rotated to a predetermined position. A movement control disc delimits the extremes of movement in the valving member and is positionable in two different positions to change the extremes of movement.
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Citations
20 Claims
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1. A control valve, comprising:
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(a) a housing defining a valve chamber having a substantially uniform cylindrical wall; (b) a valving member disposed within said chamber and mounted for rotational movement between predetermined positions; (c) a pair of spaced apart, inlet/outlet ports opening into said chamber through said cylindrical wall and at least one intermediate port opening into said chamber; (d) means communicating a second intermediate port with said chamber; (e) said valving member defining a passage portion, said passage portion being in fluid communication with at least a portion of said cylindrical wall; (f) seal means around said passage portion and sealing engaging said cylindrical wall whereby a passage is formed having a predetermined extent and which is fluidly isolated from said valve chamber; (g) said predetermined extent of said passage and said inlet/outlet port spacing being arranged such that in one position the passage extends between and fluidly cross communicates said pair of inlet/outlet ports, in another position it communicates one of said inlet/outlet ports with said first intermediate port and in third and fourth positions said passage portion formed in said valve member overlies one of said inlet/outlet ports to fluidly isolate said inlet/outlet port whereby flow out of said inlet/outlet port into said valve chamber is blocked; (h) movement control means for limiting movement in said valving member between predetermined positions. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A by-pass/diverter valve for controlling the communication of a fluid supply to and from a fluid treatment device, comprising:
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(a) a valve housing including a pair of inlet/outlet connection means for connecting said valve to a fluid source and to an outlet for receiving treated fluid; (b) structure defining a control chamber having a cylindrical wall portion and spaced apart, inlet/outlet ports associated with said pair of inlet/outlet connection means, said inlet/outlet ports extending into said control chamber through said cylindrical wall portion; (c) structure defining a fluid treatment device input port and a fluid treatment device output port, said fluid device input port extending through said cylindrical wall portion into said control chamber; (d) rotatable valve means for fluid communicating either one of said inlet/outlet ports with said fluid treatment device input port while concurrently communicating the other of said inlet/outlet ports with said fluid treatment device output port, said valve means defining a passage portion surrounded by a peripheral seal means sealing engageable with said cylindrical wall portion when said valve means is disposed in said control chamber, said passage portion together with a section of said cylindrical wall portion bounded by said seal means defining an isolated passage; (e) said passage having a predetermined extent and said inlet/outlet ports and said fluid treatment device input port having a spacing selected such that in a first rotated position of said valve means, said passage extends between and fluidly communicates said inlet/outlet ports, in a second position said passage extends between and fluidly communicates one of said inlet/outlet ports and said fluid treatment device input port and in third position said passage portion of said valve means overlies one of said inlet/outlet ports and blocks flow out of said one inlet/outlet port. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A control valve, comprising:
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(a) a valve housing defining a circular chamber having a cylindrical wall having a predetermined axial extent; (b) at least three, spaced apart fluid ports opening into said chamber through said cylindrical wall; (c) a valving member including a plug portion sized to fit within said chamber and rotatable therein; (d) said plug portion defining a recess located in a confronting relation to said cylindrical wall when said valve member is installed in said chamber; (e) seal means extending around a periphery of said recess and sealingly engaging said cylindrical wall such that said recess and a section of said cylindrical wall bounded by said seal means forms an isolated flow passage that extends across a portion of said valving chamber said fluid ports having a selected spacing and said flow passage having an extent such that first and second adjacent ports of said three ports are cross-communicated at one predetermined position of said valving member and the second and third ports are cross-communicated at another predetermined position of said valving member; (f) structure defining a fourth port communicating with a region of said valving chamber through a passage means; (g) said plug portion including means for communicating said passage means with selected ports when said valving member is moved to selected positions; and
,(h) adjustable movement control means for delimiting movement in said valving member to a first range that includes said first predetermined position but not said second predetermined position or a second range that includes said second predetermined position but not said first predetermined position. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification