Stopcock valve for high pressure applications
First Claim
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1. A high pressure, plastic stopcock valve comprising:
- a valve body having an exterior surface, the body defining a bore, said bore defining an interior surface within said body;
at least two extensions projecting from said exterior surface, each said extension defining a passage into a port, the port extending through said interior surface fluidly connecting said bore with said passages;
a core having a first end and a second end, disposed within said bore, such that said first end extends out of said bore;
a reduced contact sealing surface defined by a portion of said core in sealing contact with said interior surface in the vicinity of said ports, said sealing surface providing a fluid tight seal between said interior surface and said core while permitting rotation of said core within said bore;
conduit means within said core for fluidly connecting at least two of said extensions; and
a radial flange extending peripherally around said exterior surface of said valve body, substantially coplanar with said ports and parallel to said sealing surface for preventing crazing and cracking in said valve body.
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Abstract
A non-crazing, two piece stopcock valve which comprises a body defining a bore therethrough and a core member disposed within the bore. A reduced contact sealing surface is defined around a portion of the core, the sealing surface providing a seal between the core and the bore. The valve further comprises a flange member which extends around the entire outside circumference of the valve body. Such a valve is capable of handling fluids having pressures of at least 1000 psi, and is resistant to crazing and microcracking during use or storage while allowing smooth rotation of the core within the bore.
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Citations
11 Claims
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1. A high pressure, plastic stopcock valve comprising:
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a valve body having an exterior surface, the body defining a bore, said bore defining an interior surface within said body; at least two extensions projecting from said exterior surface, each said extension defining a passage into a port, the port extending through said interior surface fluidly connecting said bore with said passages; a core having a first end and a second end, disposed within said bore, such that said first end extends out of said bore; a reduced contact sealing surface defined by a portion of said core in sealing contact with said interior surface in the vicinity of said ports, said sealing surface providing a fluid tight seal between said interior surface and said core while permitting rotation of said core within said bore; conduit means within said core for fluidly connecting at least two of said extensions; and a radial flange extending peripherally around said exterior surface of said valve body, substantially coplanar with said ports and parallel to said sealing surface for preventing crazing and cracking in said valve body. - View Dependent Claims (2, 3, 4, 11)
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- 5. The stopcock valve of claim said 4 further comprising a handle attached to said first end of said core.
Specification