High-Pressure Hand Valve Sealing With a Floating Ball Seat
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Solution Overview
Problem
Existing high-pressure check valves fail to provide a completely positive shutoff and are not user-friendly or safe, especially when operating with high pressures, due to leakage issues and potential failure of soft seats, and existing solutions do not effectively address these problems.
Innovation Solution
A floating ball check valve with a Teflon or PEEK seat insert and a stem spring mechanism, where the seat insert is installed using an interference fit, allowing for a completely positive shutoff and featuring interchangeable components and an ergonomic handle for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a soft seat is used to provide good sealing characteristics, then sealing performance is improved, but the soft seat deteriorates due to media exposure and deforms under high pressure resulting in loss of seal
Solution Approach 1:
The patent employs a replaceable soft seat that is designed to be replaced periodically. The soft seat is made of durable elastomeric material that provides excellent sealing but is intended to be replaced after a certain service life when it shows signs of deterioration or deformation, rather than attempting to make it permanently durable
Solution Approach 2:
The valve combines a soft elastomeric seat material with a hard metallic ball and valve body. This composite approach allows the soft seat to provide excellent sealing contact with the metallic ball while the hard metallic components provide structural strength and resistance to media deterioration
2Strength
If a metal ball and machined radius valve seat are used, then structural strength is improved, but a tight seal cannot be achieved as air pressure holds the ball in normally closed position causing continuous leakage
Solution Approach 1:
The patent changes the surface parameters of the valve seat by providing it with a cross-hatch or stipple pattern rather than a smooth machined surface. This increases the surface area and creates multiple contact points for the ball, improving sealing performance while maintaining structural strength
Solution Approach 2:
The valve seat has different surface qualities in different zones: the sealing surface has a cross-hatch or stipple pattern for enhanced sealing, while other portions maintain smooth finishes for structural integrity and assembly purposes
3Stress or pressure
If high pressure operation is implemented, then valve capability is improved, but safety and user-friendliness deteriorate
Solution Approach 1:
The patent replaces complex mechanical high-pressure valve mechanisms with a simple floating ball design that uses fluid pressure itself to achieve sealing. The ball floats freely and is pushed against the cross-hatched seat by the media pressure, eliminating the need for complex springs, actuators, or safety mechanisms
Solution Approach 2:
The valve uses the media pressure itself to achieve the sealing function. The floating ball is pushed against the seat by the high pressure media, so the system serves itself - the higher the pressure, the better the sealing, without requiring additional energy input or complex control mechanisms
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
The solution achieves a completely positive shutoff with no media leakage at high or low pressures, ensuring safety and ease of use, while being economical and OSHA compliant, with the ability to handle various media types.
Implementation Method 1
a stem spring for biasing the stem to the closed position
Implementation Method 2
the seat insert is installed using an interference fit
Implementation Method 3
the ball is free floating and the pressure of the system biases the ball into the sealing engagement with the seat
Data Source
AI summary
A safe, economical, lightweight, ergonomic, and easy to use improved hand valve capable of handling high pressures with either air or liquid media for use in industrial environments. The industrial high pressure hand valve is of the type similar to a floating ball check valve, but with a unique way of achieving the sealing engagement that provides a completely positive shutoff so that absolutely no leakage of the air or liquid media occurs whether operated at high or low pressures. The industrial high pressure hand valve is comprised of a valve body, an ergonomic handle grip, a live swivel, a hose barb, and a nozzle for either air or liquid media. The industrial high pressure hand valve is designed in such a way that other accessory components, such as extended nozzles, can be threadably connected thereto. A handle connected to the valve body controls the flow of the media and when released provides an automatic and completely positive shutoff.