Reducing check valve

The utility model discloses a variable-diameter check valve, and particularly relates to the technical field of variable-diameter check valves, the variable-diameter check valve comprises a check valve main body, a filter screen is arranged in the rear end of the check valve main body, and a connect...

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Bibliographische Detailangaben
Hauptverfasser:	YAN MIAOBIN, YU LIHUI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACTUATING-FLOATS BLASTING CLEANING CLEANING IN GENERAL COCKS CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING MILLING GRAIN PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATORY TREATMENT OF GRAIN FOR MILLING PREVENTION OF FOULING IN GENERAL SEPARATION TAPS THERMAL INSULATION IN GENERAL TRANSPORTING VALVES WEAPONS
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