King 7511212B-03 Inline Flowmeter 8.0 Scfm 1/2 Inch Fnpt

Product Description

The KING 7511212B-03 is a block-style inline flowmeter designed for measuring volumetric flow rates in compressed air and water lines. Rated to 8.0 SCFM and a maximum working pressure of 125 psi, this unit features a 1/2-inch FNPT port connection and a vertical mounting orientation. The acrylic housing provides a clear visual read of flow rate without tools or gauges. It installs directly in-line within the supply line and is sized for light commercial and industrial fluid or air distribution systems. HVAC technicians, plumbers, and facilities maintenance professionals typically specify this meter for monitoring and balancing flow in service lines.

The 7511212B-03 is suited for inline installation in air and water distribution systems requiring a compact, block-style meter. Its 1/2-inch FNPT port fits standard threaded pipe fittings common in both plumbing and compressed air infrastructure. The vertical mount orientation must be observed during installation for accurate float operation. No electrical connection is required, making it straightforward to integrate into existing piping without panel access or wiring work.

Key Features

• 8.0 SCFM flow capacity for air and water service
• 125 psi maximum working pressure
• 1/2-inch FNPT port for standard threaded pipe connections
• Acrylic housing and body for clear, direct-read float visibility
• PVC fittings for compatibility with common plumbing and air line materials
• Plus or minus 5 percent accuracy rating
• Vertical mounting orientation required for proper operation

Compatibility

Designed for use with air and water systems. Compatible with 1/2-inch FNPT threaded pipe connections in inline flow measurement applications.

Installation Notes

Installation should be performed by a licensed plumber or qualified HVAC or mechanical technician. Shut off the supply line and depressurize the system fully before threading the meter into the pipe. The meter must be mounted vertically for the float to read accurately — do not install in a horizontal or inverted position. Apply appropriate thread sealant to the FNPT connections per IPC guidelines and confirm no leaks before returning the system to service.