F16K 15/021
Check valves with guided rigid valve members {the valve member being a movable body around which the medium flows when the valve is open }
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Edits on 16 Mar, 2022
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Edits on 5 Mar, 2022
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F16K 15/021
Check valves with guided rigid valve members {the valve member being a movable body around which the medium flows when the valve is open }
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