FIELD: metered delivery of fluid medium from supply source to users.
SUBSTANCE: proposed meter includes metering valve sliding in body at working stroke C; this valve has inlet hole for receiving fluid medium from supply source and outlet for discharge of fluid medium to user. Meter is provided with passage for fluid medium for performing washing motion of fluid medium over contact surfaces of valve and body. Passage is formed by helical groove at width L and screw pitch P. Besides that injector is proposed which is fitted with this meter.
EFFECT: avoidance of accumulation of contaminants during flow of fluid medium through meter.
3 cl, 3 dwg
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