Dual Union Drain Valve With Reversible Check Inserts for Backflow Control
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Solution Overview
Problem
Existing dual union drain valves require multiple components for installation and face challenges in positioning due to space constraints, and they often fail to prevent backflow and water hammers effectively, especially in plumbing systems with various fittings and orientations.
Innovation Solution
A dual union drain valve with a tee-shaped valve body and reversible check valve inserts that can be coupled to any style of fittings in any orientation, featuring internal and external threaded surfaces for easy assembly and disassembly, and check valve inserts that prevent backflow by allowing fluid flow only in one direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple components are used to attach the drain valve to plumbing systems, then the drain valve can be securely installed, but the installation complexity increases and space requirements increase
Solution Approach 1:
The patent combines multiple attachment functions into a single integrated valve body design. The dual union mechanism integrates both attachment points and sealing functions into one component, eliminating the need for separate fittings and reducing the number of parts required for installation while maintaining secure attachment to plumbing systems.
Solution Approach 2:
The valve body is designed with universal adaptability to connect to various plumbing configurations. The dual union design allows the same valve body to attach to different pipe orientations and types using the same component, making the device multi-functional and reducing installation complexity across different application scenarios.
2Adaptability or versatility
If multiple fittings are used to accommodate various orientations, then the drain valve can be installed in any orientation, but the device complexity and space requirements increase
Solution Approach 1:
The dual union valve body design provides universal mounting capability that works in any orientation without requiring orientation-specific fittings. The symmetric dual union configuration allows the valve to be installed horizontally, vertically, or at any angle using the same basic component, eliminating the need for multiple orientation-specific adapters.
Solution Approach 2:
The valve body incorporates three-dimensional flow path design that accommodates various installation orientations through internal geometry rather than external fittings. The internal passageways are configured to handle fluid flow regardless of the valve's external orientation, allowing flexibility in installation dimension without adding complexity.
3Reliability
If check valve inserts are added to prevent backflow, then backflow and water hammers are prevented, but the device complexity increases
Solution Approach 1:
The check valve inserts are integrated directly into the valve body assembly rather than being separate external components. This merging of the backflow prevention mechanism into the main valve structure provides reliable backflow protection while minimizing the increase in overall device complexity and component count.
Solution Approach 2:
The valve body is segmented into modular sections that include removable check valve inserts. This segmentation allows the check valve function to be added or removed independently based on application requirements, providing backflow prevention capability only when needed without permanently increasing the complexity of the basic valve structure.
4Adaptability or versatility
If reversible check valve inserts are used, then flow path flexibility is improved, but the manufacturing complexity increases
Solution Approach 1:
The check valve inserts are designed as separate removable segments that can be independently manufactured and then assembled into the valve body. This segmentation allows each insert to be produced using standard manufacturing processes, and the reversible flow capability is achieved through simple geometric design of the insert rather than complex integrated manufacturing.
Solution Approach 2:
The check valve inserts are designed to be reversible in orientation, allowing the same component to function in either flow direction depending on how it is installed. This inversion principle provides flow path flexibility without requiring different components for different flow directions, simplifying manufacturing while maintaining versatility.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy installation and orientation of the drain valve, effectively prevents backflow and water hammers, and allows for flexible flow paths, improving the functionality and efficiency of plumbing systems by reducing the complexity of component interactions.
Implementation Method 1
a first check valve insert with an inlet and an outlet, positioned in the first fitting... a second check valve insert with an inlet and an outlet, positioned in the second fitting
Data Source
AI summary
A dual union drain valve assembly has one or more reversible check valve inserts in the fitting(s) that are coupled to the drain valve body. The coupling of the fittings to the drain valve body is done using union couplings permitting the easy installation and/or reversal of the check valve insert(s). In addition, the union couplings permit removal of the dual union drain valve assembly from the surrounding plumbing system for service or replacement of the dual union drain valve assembly.