Pro-source 2556114467PRO Flow Control Valve 1/4 in

Product Description

The PRO-SOURCE 2556114467PRO is a meter-out, knob-adjusted flow control valve designed for pneumatic tubing systems. It regulates airflow on the exhaust side of an actuator, allowing controlled deceleration of cylinders and other pneumatic devices. The valve body is nickel-plated brass with a Buna Nitrile O-ring and accepts 1/4-inch OD tubing. The 1/4-inch male thread connection follows a universal thread type, making it straightforward to integrate into standard pneumatic circuits. Installation is handled by HVAC technicians, automation mechanics, and industrial maintenance personnel working on compressed-air systems.

This valve is suited for use in pneumatic control circuits where cylinder speed or actuator movement must be throttled on the outflow stroke. Typical applications include air-operated actuators in HVAC damper controls, pneumatic tool circuits, and light industrial automation where precise exhaust flow metering is required. The knob adjustment provides tool-free tuning at the valve body, making field calibration practical during commissioning or troubleshooting.

Key Features

• Meter-out design controls airflow on the exhaust side of the actuator for smooth cylinder deceleration
• Knob-adjusted needle allows tool-free flow rate tuning at the valve
• Nickel-plated brass body resists corrosion in compressed-air environments
• Buna Nitrile O-ring provides reliable sealing across standard pneumatic operating conditions
• 1/4-inch male universal thread fits common pneumatic fittings and manifolds
• Compact, lightweight construction at 0.17 pounds

Compatibility

Designed as an OEM-style replacement or inline addition for pneumatic systems using 1/4-inch OD tubing with 1/4-inch male threaded ports in standard compressed-air circuits.

Installation Notes

This valve is typically installed by qualified pneumatic or HVAC technicians. Depressurize the air supply and bleed residual pressure from the circuit before removal or installation. Verify thread compatibility before assembly to avoid cross-threading the brass body. Adjust the knob incrementally and cycle the actuator to confirm the desired flow rate before returning the system to service.