Sanitary fluid handling controls
First Claim
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1. A membrane sealed sanitary valve comprising:
- a valve body having a top flanged opening and a valve body seat;
a top cap attached to said top flanged opening and having a parts capsule removably attached inside said top cap, said parts capsule comprising;
a valve stem;
at least one stem vertical guide;
at least one bearing surface responsive to said stem vertical guide;
at least one seal designed to seal an internal pressure area of said valve from ambient conditions outside said valve, wherein said valve stem protrudes beyond said top cap and is designed to reciprocate and accommodate an operator;
a valve gate attached to said stem and responsive to movement of said stem and;
a telescoping membrane seal responsive to movement of said gate having a substantially semicircular reversing convolution, wherein said gate is designed to move said membrane seal against said valve body seat to intersect a flow passageway through said valve body without substantial stretching of said membrane seal by telescoping along an axis aligned with said movement of said gate.
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Abstract
Membrane sealed sanitary valves for use in processing and controlling fluid flow. The valve bodies are substantially straight through with no internal obstructions to flow and do not present stagnant flow regions. During use of the membrane sealed sanitary valves, the membrane does not stretch or abrade. The new valve body cavity and seat are formed by an infinite number of radii sealed laterally and decreasing in size from the top of the body cavity to the valve seat. The membrane of the present invention acquires, upon assembly, a 180° convolution which telescopes up and rolls in downward motion.
5 Citations
10 Claims
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1. A membrane sealed sanitary valve comprising:
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a valve body having a top flanged opening and a valve body seat;
a top cap attached to said top flanged opening and having a parts capsule removably attached inside said top cap, said parts capsule comprising;
a valve stem;
at least one stem vertical guide;
at least one bearing surface responsive to said stem vertical guide;
at least one seal designed to seal an internal pressure area of said valve from ambient conditions outside said valve, wherein said valve stem protrudes beyond said top cap and is designed to reciprocate and accommodate an operator;
a valve gate attached to said stem and responsive to movement of said stem and;
a telescoping membrane seal responsive to movement of said gate having a substantially semicircular reversing convolution, wherein said gate is designed to move said membrane seal against said valve body seat to intersect a flow passageway through said valve body without substantial stretching of said membrane seal by telescoping along an axis aligned with said movement of said gate. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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2. A telescoping membrane seal comprising:
a tubular piece of material having a first end and a second end, said first end being closed and said second end being substantially open.
Specification