Method for making a glass precision valve

Details Method for making a glass precision valve Method for making a glass precision valve

1985-09-30

1987-06-09

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Surface finishing

51283R, 51290, 51326, 13724621, 13724622, 137250, 1372511, 251309, 251314, 251332, 251368, 251900, 264267, 264311, B29C 3910, B29C 3908, B24B 1504, F16K 516

Patent

active

046719156

ABSTRACT:
A glass precision valve for use in liquid measuring instruments, the valve comprising a valve body having a conically sharpened head slidably accommodated in a bulged portion, which includes glass tubes at opposite ends, a valve seat provided by the inside wall of the bulged portion, the surface of the valve seat allowing the conically sharpened head of the valve body to be slidable in a liquid-tight manner, and the valve body including a ring-shaped groove around its axis, the ring-shaped groove being filled with an elastic material.

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