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    Engineer in electric power plant inspecting manual valve in condenser room piping — Stock Photo
    Engineer in electric power plant inspecting manual valve in condenser room piping
    Row of colored metal faucets with valves and pipes transferring hot and cold water on plant — Stock Photo
    Row of colored metal faucets with valves and pipes transferring hot and cold water on plant
    Back view of crop unrecognizable male engineer ascending ladder against metal vessel in beer factory — Stock Photo
    Back view of crop unrecognizable male engineer ascending ladder against metal vessel in beer factory
    Close-up of valve of oil gallon in industrial workshop — Stock Photo
    Close-up of valve of oil gallon in industrial workshop
    Aortic valve, computer illustration. — Stock Photo
    Aortic valve, computer illustration.
    Crop unrecognizable male worker in mask washing valve of metal tank at work in brewing company — Stock Photo
    Crop unrecognizable male worker in mask washing valve of metal tank at work in brewing company
    Vintner checking stainless steel vat in winery cellar — Stock Photo
    Vintner checking stainless steel vat in winery cellar
    Schematic representation of human vein structure — Stock Photo
    Schematic representation of human vein structure
    Copper distillery or fermentation chamber — Stock Photo
    Copper distillery or fermentation chamber
    Side view of crop male worker in mask washing valve of metal tank at work in brewing company during pandemic — Stock Photo
    Side view of crop male worker in mask washing valve of metal tank at work in brewing company during pandemic
    Gloved hands of unrecognizable male master in turning industrial machine valve during work on factory — Stock Photo
    Gloved hands of unrecognizable male master in turning industrial machine valve during work on factory
    Worker closing the cylinder tap in scrapyard — Stock Photo
    Worker closing the cylinder tap in scrapyard
    Close-up view of male farmer repairing valve pipe in farm on a sunny day — Stock Photo
    Close-up view of male farmer repairing valve pipe in farm on a sunny day
    Man holding beer bottle while making beer at home brewery — Stock Photo
    Man holding beer bottle while making beer at home brewery
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Human heart anatomy showing pulmonary valve, illustration. — Stock Photo
    Human heart anatomy showing pulmonary valve, illustration.
    Female power engineer checking injectors with compressed gas at power station — Stock Photo
    Female power engineer checking injectors with compressed gas at power station
    Human heart with colored pulmonary valve, computer illustration. — Stock Photo
    Human heart with colored pulmonary valve, computer illustration.
    Human heart anatomy showing pulmonary valve, digital illustration. — Stock Photo
    Human heart anatomy showing pulmonary valve, digital illustration.
    Close-up of valve oil barrels and gallon in workshop — Stock Photo
    Close-up of valve oil barrels and gallon in workshop
    Female power engineer checking pressure transducers at power plant — Stock Photo
    Female power engineer checking pressure transducers at power plant
    Front view of senior Caucasian farmer fixing large irrigation water pipe valve in the field at farm — Stock Photo
    Front view of senior Caucasian farmer fixing large irrigation water pipe valve in the field at farm
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Millennial man and father in law working on old classic car together — Stock Photo
    Millennial man and father in law working on old classic car together
    Medical illustration of human heart interior — Stock Photo
    Medical illustration of human heart interior
    Man lifting wort to make beer at home brewery — Stock Photo
    Man lifting wort to make beer at home brewery
    Painted valves and pipes — Stock Photo
    Painted valves and pipes
    Side view of senior Caucasian male farmer repairing valve pipe on the field in farm on a sunny day — Stock Photo
    Side view of senior Caucasian male farmer repairing valve pipe on the field in farm on a sunny day
    Man lifting wort to make beer at home brewery — Stock Photo
    Man lifting wort to make beer at home brewery
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Valve on beer worts to make beer at home brewery — Stock Photo
    Valve on beer worts to make beer at home brewery
    Human heart with colored mitral valve, computer illustration. — Stock Photo
    Human heart with colored mitral valve, computer illustration.
    Indoors view of Pipeline in a water treatment plant — Stock Photo
    Indoors view of Pipeline in a water treatment plant
    Human heart anatomy showing valves, cross section illustration. — Stock Photo
    Human heart anatomy showing valves, cross section illustration.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Man stirring beer in work while making beer at home brewery — Stock Photo
    Man stirring beer in work while making beer at home brewery
    Gas Compression Station on background — Stock Photo
    Gas Compression Station on background
    Glass of barley, flask and beer bottle on beer worts to make beer at home brewery — Stock Photo
    Glass of barley, flask and beer bottle on beer worts to make beer at home brewery
    Close-up of man fixing pipe to beer wort to make beer at home brewery — Stock Photo
    Close-up of man fixing pipe to beer wort to make beer at home brewery
    Endobronchial valves fitted to treat tuberculosis — Stock Photo
    Endobronchial valves fitted to treat tuberculosis
    Female power engineer adjusting water valves at power plant — Stock Photo
    Female power engineer adjusting water valves at power plant
    Partial view of oil storage tank. — Stock Photo
    Partial view of oil storage tank.
    Female power engineer adjusting water valves at power plant — Stock Photo
    Female power engineer adjusting water valves at power plant
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom — Stock Photo
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab — Stock Photo
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab
    Female power engineer adjusting pressure valve at power station — Stock Photo
    Female power engineer adjusting pressure valve at power station
    Close-up of worker operating the gas cylinder in scrapyard — Stock Photo
    Close-up of worker operating the gas cylinder in scrapyard
    Medical illustration of artificial heart valve. — Stock Photo
    Medical illustration of artificial heart valve.
    Prosthetic heart valves — Stock Photo
    Prosthetic heart valves
    Construction workers preparing to lift gate valve for water main — Stock Photo
    Construction workers preparing to lift gate valve for water main
    Engineer in electric power plant adjusting manual valve in condenser room piping — Stock Photo
    Engineer in electric power plant adjusting manual valve in condenser room piping
    Man pouring sack of barley into wort to make beer at home brewery — Stock Photo
    Man pouring sack of barley into wort to make beer at home brewery
    Light bulbs and valve bulbs, X-ray. — Stock Photo
    Light bulbs and valve bulbs, X-ray.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Mannequin placed next to industrial pipework — Stock Photo
    Mannequin placed next to industrial pipework
    Female power engineer adjusting pressure valve at power station — Stock Photo
    Female power engineer adjusting pressure valve at power station
    Closeup view of Abalone mussel with herb on salt — Stock Photo
    Closeup view of Abalone mussel with herb on salt
    Close-up of gas cylinders in garage — Stock Photo
    Close-up of gas cylinders in garage
    Copper beer distillery chamber — Stock Photo
    Copper beer distillery chamber
    Human heart anatomy showing tricuspid valve, cross section illustration. — Stock Photo
    Human heart anatomy showing tricuspid valve, cross section illustration.