Back flow prevention valve

Back flow prevention valve

The device has a housing (12) provided with at least one leakage opening (23) between an inlet opening (18) and an outlet opening (19) and 2 successive non-return valves (54,74), the first of which is displaced relative to the housing for controlling the flow connection between the inner space betwe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KRAUTER RONALD, KLOEPFER MARTIN
Format: Patent
Sprache:chi ; eng
Schlagworte:
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER
ENGINEERING ELEMENTS AND UNITS
FIXED CONSTRUCTIONS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
SEWERAGE
SINKS
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WATER SUPPLY
WEAPONS
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Beschreibung
Zusammenfassung:The device has a housing (12) provided with at least one leakage opening (23) between an inlet opening (18) and an outlet opening (19) and 2 successive non-return valves (54,74), the first of which is displaced relative to the housing for controlling the flow connection between the inner space between the non-return valves and the leakage opening. The second non-return valve is supported so that it can slide relative to the housing without impairing the sliding movement of the first non-return valve.