Flow Indicating Valves | McMaster-Carr

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30 Products

Flow-Adjustment Valves

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Gradually open and close to control the flow of air and liquids through a line

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Easy-Install Plastic Threaded Flow-Adjustment Valves

Turn the union fitting to install or remove without disrupting your line

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Balancing Valves

Threaded Balancing Valves

Measure pressure differential across the valve and change the flow rate

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Solder-Socket Balancing Valves

Attach with solder to measure pressure differential and change the flow rate

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Start and stop flow through a line

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