EV260B 6B (032U8056) Danfoss Proportional Solenoid Valve

Product Overview

The EV260B 6B (032U8056) is a high-precision, 2/2-way proportional solenoid valve engineered for stepless flow regulation in complex industrial automation systems. Unlike standard on/off valves, the Danfoss 032U8056 (032U8056) allows for infinitely variable control of the flow rate by modulating the position of the valve plug in response to the electrical signal. This capability is essential for applications requiring stable temperature control, precise mixing of fluids, or pressure regulation in "open" systems. Built with a robust brass body and advanced PTFE sealing, this Normally Closed (NC) valve provides a reliable, fail-safe solution for B2B industrial processes involving aggressive media or high-performance requirements.

Technical Configuration

The technical architecture of the 032U8056 is based on a pilot-operated proportional principle, utilizing a 13.5 mm actuator system. The valve features a 6 mm orifice designed to handle media within Fluid Group 1. Its "NC" (Normally Closed) function ensures the valve shuts tight upon power loss, preventing unauthorized fluid bypass. The use of PTFE (Teflon) for the seal material provides superior chemical resistance and thermal durability compared to standard elastomers. To ensure optimal performance, this valve requires a minimum differential pressure of 0.5 bar to actuate the diaphragm, supporting a maximum operating differential of 10 bar (145 psi).

Technical Specifications

Technical FAQs

How does proportional operation improve process control?

Standard valves only offer 0% or 100% flow. The 032U8056 can be set to any point between 0% and 100% based on the input current, allowing for smooth adjustments that eliminate water hammer and enable precise PID control loops.

What is the significance of the PTFE seal in this model?

PTFE (Polytetrafluoroethylene) is highly resistant to chemical corrosion and high temperatures. It is the preferred material for applications involving steam, aggressive chemicals, or fluids where standard rubber seals would degrade.

Is a specific controller required for this valve?

Yes, to achieve proportional control, the valve must be paired with an electronic control unit (such as the Danfoss ECI) that provides a Pulse Width Modulated (PWM) signal to the coil.

Engineering & Installation Guide

• Pressure Differential Requirements: This is a pilot-operated valve. It must have a minimum differential pressure of 0.5 bar (7.25 psi) to open. If the system pressure is equal on both sides or too low, the valve will not regulate flow accurately.

• Media Purity: Because proportional valves rely on precision-machined pilot orifices, they are sensitive to debris. Installation of an upstream filter or strainer (mesh size < 200 microns) is mandatory to prevent clogging of the pilot channel and potential failure of the proportional mechanism.

• Mounting and Vibration: Install the valve with the flow following the embossed arrow on the body. For maximum service life of the actuator system, mount the valve with the coil in the vertical position. If the installation environment is prone to high vibration, ensure the piping is securely braced to prevent mechanical wear on the 13.5 mm actuator.