Compact Backflow Valve Assembly With Transverse Cartridge Buckets
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Solution Overview
Problem
Existing backflow prevention assemblies are elongated and require numerous components, making assembly complex, servicing time-consuming, and certification testing cumbersome.
Innovation Solution
A compact valve assembly design featuring transversely oriented cartridge buckets with integrated frames and covers that reduce component count, facilitate assembly, and enhance testing efficiency, utilizing angled valve seats and tapered sidewalls for improved flow control and space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If traditional BFP assemblies use multiple separate components (buckets, frames, covers, valves) arranged linearly, then the assembly provides complete backflow prevention functionality, but the lay-length becomes excessively long and component count increases
Solution Approach 1:
The patent combines multiple separate components (buckets, frames, covers, and valves) into a single integrated valve assembly body. The first and second buckets are merged with their respective frames and covers to form unified structures, eliminating the need for multiple discrete parts and reducing the overall lay-length while maintaining all necessary backflow prevention functions.
Solution Approach 2:
The patent implements a nested structure where the valve member is contained within the bucket, which is in turn integrated with the frame and cover assembly. This nesting arrangement allows multiple functional elements to be housed within compact boundaries, reducing the external dimensions and component count while preserving internal functionality.
2Measurement precision
If traditional BFP assemblies use taps or test cocks spread out along the assembly body, then pressure measurements can be taken at different zones, but the assembly becomes unduly elongated
Solution Approach 1:
The patent transitions from a linear arrangement of test cocks along the assembly body to a three-dimensional integrated structure where test cocks are positioned at strategic locations on the compact valve assembly. This spatial reconfiguration allows pressure measurements at different zones without extending the lay-length, as the measurement points are distributed in three-dimensional space rather than along a linear path.
3Ease of operation
If traditional BFP assemblies use numerous separate components, then complete functionality is achieved, but assembly and servicing become time-consuming
Solution Approach 1:
The integration of buckets, frames, covers, and valves into a unified assembly reduces the number of separate components that need to be handled during assembly and servicing. This merging of components streamlines the assembly process and reduces servicing time while maintaining all necessary backflow prevention functions.
Solution Approach 2:
The patent segments the valve assembly into modular functional units (first valve assembly with first bucket, second valve assembly with second bucket) that can be independently serviced or replaced. This segmentation allows for faster maintenance operations compared to servicing a monolithic assembly, as individual modules can be accessed and replaced without disassembling the entire structure.
4Adaptability or versatility
If traditional BFP assemblies use elongated configurations with spread-out components, then all functional zones are accessible, but space utilization becomes inefficient
Solution Approach 1:
The patent reconfigures the functional zones from a linear, space-consuming arrangement to a compact three-dimensional layout. The test cocks and functional zones are positioned in three-dimensional space around the compact valve body, allowing all zones to remain accessible while dramatically reducing the footprint and space requirements of the overall assembly.
Data Source
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AI summary
A backflow prevention assembly has a body having a first bucket with a sidewall extending between a closed end and an open end along a first bucket axis, a first conduit extending from an inlet of the sidewall of the first bucket, and a second bucket having a sidewall extending between a closed end and an open end along a second bucket axis. A second conduit extends between an outlet of the sidewall of the first bucket and an inlet of the sidewall of the second bucket, and a third conduit extends from an outlet of the sidewall of the second bucket. The conduits extend along a conduit axis that is perpendicular to the bucket axes. The valve assembly includes covers secured over the open ends of the buckets and a valve member located in each bucket that is biased to prevent reverse flow through the inlets of the buckets.