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The PRO-SOURCE 4827201215PRO is a tamper-resistant air flow control valve designed to regulate airflow in pneumatic and fluid-control systems. Built with a nickel-plated brass body, this valve provides corrosion resistance and durability in demanding service environments. It accepts a 3/8-inch tube outside diameter and features a 3/8-inch male thread connection, making it a straightforward fit for standard tubing configurations. HVAC technicians, plumbers, and industrial service pros install this type of valve where precise flow control and tamper resistance are required in compressed air, pneumatic, or similar low-pressure line applications.
This valve is suited for use in residential and light commercial pneumatic control lines, HVAC control circuits, and fluid-handling systems where airflow regulation is necessary. The tamper-resistant design helps maintain set flow rates in installations where unauthorized adjustment is a concern. Its compact body dimensions of 1.42 inches in length, 0.75 inches in width, and 1.81 inches in height allow installation in tight spaces with limited clearance.
Designed as an OEM-style replacement or upgrade for flow control valves used in pneumatic control and HVAC airflow regulation applications with 3/8-inch tube outside diameter and 3/8-inch male thread connections.
Installation should be performed by a qualified HVAC technician or pipefitter. Depressurize and isolate the line completely before removing any existing valve or fitting. Use thread sealant appropriate for the service fluid and verify the male thread engagement is secure before re-pressurizing the system. Follow applicable codes and manufacturer torque guidance for brass fittings to avoid over-tightening and cracking the body.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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