Reciprocating valve having stem cleaning means

Details Reciprocating valve having stem cleaning means Reciprocating valve having stem cleaning means

1976-01-27

1977-12-06

Schwadron, Martin P.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

152565, 251214, 277 24, F16K 4100

Patent

active

040611574

ABSTRACT:
A reciprocating valve is formed with a valve stem extending through a packing box which includes an outwardly facing conical surface disposed about the valve stem. The conical surface terminates in a knife-like edge which functions to remove accumulations of foreign material from exposed portions of the valve stem. As the stem moves into the packing box, a non-metallic liner is disposed between the packing box and the valve stem for positioning the knife-like edge in close proximity to and concentric with the valve stem.

REFERENCES:
patent: RE23894 (1954-11-01), Burkhard et al.
patent: 2368137 (1945-01-01), Harmon
patent: 2689145 (1954-09-01), Magos et al.
patent: 2757896 (1956-08-01), Sangster
patent: 2983562 (1961-05-01), Runton et al.
patent: 3084945 (1963-04-01), Alexander
patent: 3352316 (1967-11-01), Zahn
patent: 3761055 (1973-09-01), Ebuchi et al.

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