Claims
- 1. Metering valve, comprising a substantially vertically-disposed, tubular housing, said housing having an upper and a lower end, said lower end of said housing having a valve seat formed thereon and an outlet opening formed in said valve seat, a substantially tubular ram being axially liftable in said housing, said ram having an upper end and a lower end, said lower end of said ram having a sealing cone formed thereon engaging said valve seat when said ram is lowered, and said ram having drainage ports formed therein in vicinity of said sealing zone, said draining ports being operable to leak fluid below said ram when said ram is lifted, and interchangeable cap means attachable to the upper end of said tubular housing and having a convex impact surface thereon, said impact surface extending into the upper end of said tubular ram when said ram is lifted, said convex impact surface having predetermined dimensions for metering the volume of fluid that can be contained within said tubular ram, and said cap having an opening formed therein for admitting fluid into said ram.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3033873 |
Sep 1980 |
DEX |
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Parent Case Info
This is a division of application Ser. No. 299,640, filed Sept. 4, 1981.
US Referenced Citations (4)
Divisions (1)
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Number |
Date |
Country |
Parent |
299640 |
Sep 1981 |
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