Push-Fit Valve Adapter for PEX and Rigid Tubing Connections
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Solution Overview
Problem
Current plumbing systems require multiple types of supply stop valves for different types of connections, including push-fit, expansion, and crimp connections, which increases installation time and cost, and necessitates a supply of various valves for each type of plumbing system.
Innovation Solution
An adapter that allows a push-fit valve to be used with both rigid pipes and PEX or PE-RT tubing, enabling either a push-fit, expansion, or crimp connection without the need for a stiffener sleeve, by utilizing gripper rings and O-rings to secure the adapter within the valve and provide a fluid-tight seal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of supply stop valves are manufactured for different connection types (push-fit, expansion, crimp), then the system can accommodate various plumbing configurations, but the device complexity and inventory requirements increase
Solution Approach 1:
The push-fit valve is designed with a universal input port that can accept both rigid pipes and flexible tubing through the same push-fit connection mechanism. The gripper rings and O-ring sealing system are configured to accommodate different tube materials (PEX, PE-RT, copper) without requiring different valve designs, thereby reducing the number of valve types needed while maintaining compatibility with various connection types.
2Reliability
If a stiffener sleeve is inserted within the tubing for push-fit connection, then proper gripping by gripper rings and good seal by O-ring are achieved, but the installation cost and time increase
Solution Approach 1:
The stiffener sleeve component is completely removed from the installation process. The push-fit valve's gripper rings and O-ring sealing system are specifically designed to provide adequate gripping and sealing performance on flexible tubing without requiring any internal stiffening components, thereby eliminating the additional installation steps and costs associated with stiffener sleeve insertion.
3Reliability
If expanders or crimping tools are used for tubing connections, then secure connections are achieved, but the installation complexity and equipment requirements increase
Solution Approach 1:
The complex mechanical connection systems (expanders, crimping tools) are replaced with a simplified push-fit mechanical insertion system. The valve's internal gripper rings provide secure gripping through friction and mechanical interlocking, while the O-ring provides sealing, eliminating the need for specialized expansion or crimping equipment while maintaining connection security.
Data Source
AI summary
A pluming fitting and adapter for coupling a tubing to the plumbing fitting. The adapter has first and second adapter end portion with connected fluid passageways. The second adapter end portion being insertable into the free-end portion of the tubing. A pluming fitting housing has a chamber sized to receive the first adapter end portion. When the first adapter end portion is positioned within the chamber, an outer end portion of its fluid passageway is in fluid communication with the chamber. A seal and gripper ring within the chamber seal with and releasably grip the first adapter end portion.