CA2521484A1 - Piston guide for piston-type flushometer - Google Patents

Piston guide for piston-type flushometer Download PDF

Info

Publication number
CA2521484A1
CA2521484A1 CA002521484A CA2521484A CA2521484A1 CA 2521484 A1 CA2521484 A1 CA 2521484A1 CA 002521484 A CA002521484 A CA 002521484A CA 2521484 A CA2521484 A CA 2521484A CA 2521484 A1 CA2521484 A1 CA 2521484A1
Authority
CA
Canada
Prior art keywords
piston
cover
ribs
flush valve
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002521484A
Other languages
French (fr)
Other versions
CA2521484C (en
Inventor
Richard A. Nortier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sloan Valve Co
Original Assignee
Sloan Valve Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/968,565 external-priority patent/US7192002B2/en
Application filed by Sloan Valve Co filed Critical Sloan Valve Co
Publication of CA2521484A1 publication Critical patent/CA2521484A1/en
Application granted granted Critical
Publication of CA2521484C publication Critical patent/CA2521484C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/40—Protecting water resources

Landscapes

  • Sanitary Device For Flush Toilet (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

A flush valve includes a body having an inlet an outlet and a seat between the inlet and the outlet. The seat defines an opening therethrough. A cover is attached to the body. A piston is engageable with the seat and movable within the body and cover to an extent permitted by a stop formed in the body or cover. The piston includes a guide portion extending through the seat opening and downstream of the seat. The guide portion has ribs and a skirt.
The axial length of both the ribs and skirt is greater than the available piston travel so the flow passages through the seat opening at all times are defined by the skirt and ribs.

Claims (8)

1. A flush valve including a body having an inlet and an outlet, a valve seat in the body between the inlet and outlet, the valve seat defining an opening, a cover attached to the body, a piston movable within the body and cover, the piston, body and cover defining a pressure chamber, an exterior seal carried by the piston and bearing against an inside wall of the cover during movement of the piston, a refill orifice in the piston connecting the pressure chamber with the inlet, pressure in the pressure chamber maintaining the piston closed upon the main seat assembly, a relief valve in the piston for venting the pressure chamber to the outlet, and an actuator mounted in the body and selectably engageable with the relief valve to vent the pressure chamber causing the piston to move away from the valve seat and open flow from the inlet to the outlet, one of the cover and body having a stop engageable with the piston for limiting upward movement of the piston to a predetermined piston travel, the piston having a guide portion which extends downstream through the valve seat opening, the guide portion having a plurality of outwardly extending axial ribs, the outer surface of which are radially in alignment with the opening in the valve seat, the piston area between the ribs being closed by a skirt, the axial extent of both the ribs and the skirt being greater than said predetermined piston travel.
2. The flush valve of claim 1 wherein the ribs and skirt have the same axial extent.
3. The flush valve of claim 1 wherein the ribs are spaced equally around the guide portion.
4. The flush valve of claim 1 wherein there are five ribs.
5. The flush valve of claim 1 wherein the skirt has an outside diameter that is about 90%
of that of the ribs.
6. The flush valve of claim 1 wherein the stop is formed by a projection on an inside surface of the cover, the projection being engageable with the piston to limit upward movement of the piston.
7. The flush valve of claim 6 wherein the cover includes an inner cover which includes a top, the top including a ring extending from the top toward the outer cover.
8. The flush valve of claim 7 wherein the inside surface of the inner cover further comprises a plurality of reinforcing ribs.
CA2521484A 2004-10-18 2005-09-28 Piston guide for piston-type flushometer Active CA2521484C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/968,565 US7192002B2 (en) 2003-10-23 2004-10-18 Piston guide for piston-type flushometer
US10/968,565 2004-10-18

Publications (2)

Publication Number Publication Date
CA2521484A1 true CA2521484A1 (en) 2006-04-18
CA2521484C CA2521484C (en) 2012-09-11

Family

ID=36242566

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2521484A Active CA2521484C (en) 2004-10-18 2005-09-28 Piston guide for piston-type flushometer

Country Status (3)

Country Link
CN (1) CN1763321B (en)
CA (1) CA2521484C (en)
MX (1) MXPA05011108A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9605419B2 (en) 2012-08-23 2017-03-28 Sloan Valve Company Piston-type flushometer valve
BR112015018016A2 (en) * 2013-02-15 2017-07-11 As Ip Holdco Llc breather cap for use with a valve and discharge assembly and discharge valve assembly.
EP2813627A1 (en) 2013-03-15 2014-12-17 Sloan Valve Company Automatic flush actuation assembly with additional manual actuation assembly

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261545A (en) * 1980-03-31 1981-04-14 Sloan Valve Company Flush valve piston having filtered orifice
US5490659A (en) * 1994-12-19 1996-02-13 Sloan Valve Company Reinforced diaphragm for flush valves
US5881993A (en) * 1997-09-25 1999-03-16 Sloan Valve Company Flushometer piston
US6299127B1 (en) * 2000-06-23 2001-10-09 Sloan Valve Company Solenoid valve piston
US6499716B2 (en) * 2001-02-27 2002-12-31 Sloan Valve Company Flush valve dual seal gasket

Also Published As

Publication number Publication date
CA2521484C (en) 2012-09-11
CN1763321B (en) 2010-07-14
CN1763321A (en) 2006-04-26
MXPA05011108A (en) 2006-04-20

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