VEU, MEU, FEU Unit Valves Specification and Installation Guide

This document provides specifications, selection guidance, and installation instructions for Satchwell VEU (2-port), MEU (3-port), and FEU (4-port) unit valves, which are characterised control valves designed for use with AVU actuators and CZU/IAC controllers to regulate hot or chilled water flow in fan coil units, induction units, and terminal units. It includes detailed technical data such as flow coefficients (Cv/Kv), pressure ratings, temperature limits, materials, connection types, and good design practice for installation, commissioning, and maintenance.