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Satchwell SFW and SFA Flow Switches Installation Guide

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This document provides specifications and installation instructions for Satchwell SFW water flow switches and SFA air flow switches, which are SPDT (Single Pole Double Throw) devices designed to monitor flow in pipes and ducts. It includes switching value tables for various pipe diameters, paddle trimming guidelines for air flows above 5 m/s, and critical warnings about electrical isolation and proper mounting to avoid turbulence.

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