Installation

What’s in the Box 

The F-420 flow Meter is shipped with the following contents: 

• F-420 Flow Meter (flowmeter may ship with plastic tube insert to prevent damage during shipping, remove plastic tube before installation) 
• Quick Start Guide (QSG) 

Preparation 

• Remove the Flow Meter from the box. Remove the protective plastic tube. Ensure the meter, float, and guide rod are intact. Confirm flow meter is proper for your pipe size and flow. 
• Identify the proper location for installation.   Piping must be vertical and properly supported. Location should be in an area that allows easy reading of the meter. Misalignment of piping may damage the flowmeter and cause o-rings to leak. 

Piping and Physical Installation 

1. The flowmeter must be installed in a vertical plane to ensure accuracy. Prepare piping and components per standard piping installation.  
2. Use only PTFE tape on the threaded adapters. Pipe dope and glue will damage the meter body and fittings. Or install the flowmeter after all glued fittings have dried and fumes have been purged from the system. 
3. Mounts and supports must be sturdy enough to support the plumbing and prevent vibration. Vibration and heavy loads will damage the meter. 
4. Avoid imposing a sudden burst of flow to the meter. Solenoid valves will damage the meter. Such a burst will cause the float to impact the top float stop with destructive force. 
5. The Maximum fluid temperature is dependent on the working pressure. High pressure and temperature will damage the meter. (see temperature VS pressure chart)