Backflow prevention and method of manufacture
DCFirst Claim
1. A method of manufacturing a backflow prevention assembly comprising the steps of:
- receiving a measured length of an existing backflow prevention assembly between a fluid supply conduit to a fluid exit conduit, wherein the existing backflow prevention assembly includes an inlet shut-off valve, a backflow prevention valve, and an outlet shut-off valve;
receiving a footprint length of the existing backflow prevention valve,obtaining a replacement backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end, the replacement backflow prevention valve having a length different than the existing backflow prevention valve;
obtaining an inlet shut-off valve and an outlet shut-off valve;
securing the backflow prevention valve between the outlet shut-off valve and inlet shut-off valve, wherein the backflow prevention valve extends between the inlet shut-off valve and outlet shut-off valve, such that a length between the outlet shut-off valve and the inlet shut-off valve is equal to the footprint length of the existing backflow prevention valve;
,obtaining certification of the replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and the outlet shut-off valve by a certifying authority; and
providing an entire certified replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and outlet shut-off valve to a replacement site, wherein the existing backflow prevention assembly is installed.
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Accused Products
Abstract
A backflow prevention assembly is disclosed including a backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve. The entire assembly, including the backflow prevention valve, the spool spacer, the inlet shut-off valve, and the outlet shut-off valve, is a certified assembly, certified by a certifying authority prior to installation. Methods of manufacturing a backflow prevention assembly and replacing a backflow prevention assembly are also disclosed.
29 Citations
16 Claims
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1. A method of manufacturing a backflow prevention assembly comprising the steps of:
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receiving a measured length of an existing backflow prevention assembly between a fluid supply conduit to a fluid exit conduit, wherein the existing backflow prevention assembly includes an inlet shut-off valve, a backflow prevention valve, and an outlet shut-off valve; receiving a footprint length of the existing backflow prevention valve, obtaining a replacement backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end, the replacement backflow prevention valve having a length different than the existing backflow prevention valve; obtaining an inlet shut-off valve and an outlet shut-off valve; securing the backflow prevention valve between the outlet shut-off valve and inlet shut-off valve, wherein the backflow prevention valve extends between the inlet shut-off valve and outlet shut-off valve, such that a length between the outlet shut-off valve and the inlet shut-off valve is equal to the footprint length of the existing backflow prevention valve;
,obtaining certification of the replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and the outlet shut-off valve by a certifying authority; and providing an entire certified replacement backflow prevention assembly, including the replacement backflow prevention valve, the inlet shut-off valve, and outlet shut-off valve to a replacement site, wherein the existing backflow prevention assembly is installed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of replacing a backflow prevention valve assembly comprising the steps of:
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removing a used backflow prevention assembly including backflow prevention valve, an inlet shut-off valve, and an outlet shut-off valve from a fluid line; providing an entirely pre-manufactured second backflow prevention assembly, the entire second backflow prevention assembly being certified by a certifying authority and comprising; a second backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end; a spool spacer having a first end and a second end; a second inlet shut-off valve; and a second outlet shut-off valve, wherein the spool spacer is secured to and extends between the second backflow prevention valve and one of the second outlet shut-off valve and second inlet shut-off valve, the spool spacer and the second backflow prevention valve having a length that is equal to a valve footprint of the used backflow prevention valve, and the entire second backflow prevention assembly having a length equal to a length of the entire used backflow prevention assembly;
including the backflow prevention valve, the inlet shut-off valve, and the outlet shut-off valve; andsecuring the second backflow prevention valve assembly to the fluid line. - View Dependent Claims (13, 14, 15)
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16. A replacement backflow prevention assembly comprising:
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a replacement backflow prevention valve having a valve housing including a valve inlet end and a valve outlet end, wherein the replacement backflow prevention valve comprises a length that is different than a length of an existing backflow prevention valve footprint; a spool spacer of predetermined length having a first end and a second end; an inlet shut-off valve; and an outlet shut-off valve, wherein the spool spacer extends between the backflow prevention valve and one of the inlet shut-off valve and the outlet shut-off valve, the spool spacer and replacement backflow prevention valve having a length equal to the footprint of an existing backflow prevention valve, and, wherein the entire replacement backflow prevention assembly is certified.
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Specification