This file is the installation manual for the Pentair Flowmeter LDF 400 series products, which mainly introduces the relevant matters that need to be paid attention to when installing the products.
This document provides installation instructions for Pentair LDF 400 Series flowmeters. It outlines general precautions, such as temperature limits (240°F) and pressure limits (150 PSI), and specifies that only hand tightening should be used on threaded nuts. Proper installation requires a vertical plane with at least one foot of straight pipe on both upstream and downstream ends to ensure accurate readings. Special care is advised for solar applications and protecting the polysulfone body from ultraviolet light. The guide also details assembly steps for soldered and threaded end models.
| Maximum Temperature | 240° F |
|---|---|
| Maximum Pressure | 150 PSI |
| Straight Pipe Requirement | One foot |
Only hand tightening is required; no pliers or other tools should be used.
It should be installed in an exact vertical plane.
No, the polysulfone body is adversely affected by ultraviolet light and must be protected.