Two-Part Sillcock Segmented Coupling for Damage Protection
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Solution Overview
Problem
Conventional sillcocks installed during construction are vulnerable to damage and unauthorized use, and existing solutions like loose key assemblies or friction-fit nipples do not effectively protect the water supply pipe from freezing or allow for easy removal and reinstallation without disrupting the water supply.
Innovation Solution
A two-part sillcock system comprising an interior assembly with a housing and flow control valve, and an exterior assembly with a faucet body, where the two parts are operably and releasably coupled via coupling assemblies, allowing for secure installation and removal from the exterior without accessing the building's water supply pipe, and featuring a mixing assembly for temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional sillcocks are installed during construction, then water supply functionality is provided early, but they are vulnerable to damage and unauthorized use
Solution Approach 1:
The sillcock is divided into two separate assemblies: an interior assembly containing the valve and water supply connection, and an exterior assembly containing the faucet body and spout. This segmentation allows the interior assembly to remain protected inside the building while the exterior assembly can be easily removed or protected during construction, resolving the contradiction between early installation and protection from damage.
2Ease of operation
If loose key assemblies or friction-fit nipples are used, then unauthorized use is prevented, but they do not protect the water supply pipe from freezing and rupture
Solution Approach 1:
By separating the sillcock into interior and exterior assemblies with a removable coupling mechanism, the design maintains the protective benefits of loose key assemblies (unauthorized users cannot easily access the valve) while ensuring the water supply pipe remains inside the heated building, protected from freezing. The exterior assembly can be removed without disrupting the interior water supply connection.
3Ease of repair
If the entire sillcock assembly is removed and replaced when damaged or fouled, then functionality is restored, but access to the building water supply pipe is required and water supply is disrupted
Solution Approach 1:
The two-assembly design with a removable coupling mechanism allows the exterior assembly to be independently removed and replaced without affecting the interior assembly or the water supply connection. This eliminates the need to disrupt water supply or access the building's internal piping, resolving the contradiction between ease of repair and water supply disruption.
4Ease of manufacture
If conventional single-piece sillcocks are used, then installation is simple, but the exterior portion cannot be selectively removed without affecting the interior valve
Solution Approach 1:
The sillcock is designed as two separate assemblies that couple together through a removable coupling mechanism. The interior assembly remains fixed to maintain valve functionality, while the exterior assembly can be selectively removed or replaced. This segmentation provides both the simplicity of conventional installation and the versatility of selective removal.
Solution Approach 2:
The coupling mechanism transitions from a fixed connection to a removable connection, allowing the exterior assembly to be dynamically separated from the interior assembly when needed. This dynamic capability enables selective removal of the exterior portion without affecting the interior valve, resolving the contradiction between installation simplicity and adaptability.
Data Source
AI summary
A two-part sillcock includes interior and exterior sillcock members selectively coupled to actuate a valve that controls fluid flow to a faucet. The interior sillcock member includes a flanged housing having an inlet, an outlet, and a valve with a stem including a coupling at the outlet end. The coupling is supported within the housing by an adapter adjacent the outlet end. The exterior sillcock member includes a flanged faucet including a handle shaft with a coupling at the inlet end. An adapter adjacent the housing outlet supports the valve stem coupling and guides and receives the faucet handle shaft coupling for engagement of the couplings. When the exterior and interior sillcock flanges are connected, the faucet handle shaft coupling is connected with the valve stem coupling, so that movement of the handle controls operation of the valve. A dual two-part sillcock includes two sillcocks connected by a mixing assembly.