Vacuum breaker for valve stem packing

Details Vacuum breaker for valve stem packing Vacuum breaker for valve stem packing

1975-10-14

1977-11-01

Largen, James R.

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Element or attachment, not elsewhere specified

D2301

Patent

active

D02462516

REFERENCES:
patent: 2270838 (1942-01-01), Langdon
patent: 3106935 (1963-10-01), Gatzke
patent: 3929150 (1975-12-01), Flinner et al.

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