Industrial / Electrical
Danfoss EV220A Solenoid Valve Instruction Manual
Quick guide for Danfoss EV220A solenoid valves, covering technical specifications, media compatibility, pressure ranges, and spare parts identification.
Table of contents
Quick guide from the manual
This document provides essential technical data for the Danfoss EV220A series solenoid valves (NC/NO). It is intended for technical personnel responsible for selecting, installing, and maintaining these valves. Key information includes media compatibility, temperature limits, and pressure differential (Δp) requirements based on the valve size and coil type.
Media compatibility and temperature
The valve performance depends on the seal material and the media used. Ensure your application falls within these parameters:
- EPDM: Water, -30°C to +100°C.
- NBR: Water, Oil, Air, -10°C to +90°C.
- FKM: Oil, Air, 0°C to +100°C; Water, 0°C to +60°C.
Operating pressure (Δp)
The valve requires a minimum pressure differential to operate correctly. For valve sizes 6-10, the minimum Δp is 0.2 bar. For sizes 12-50, the minimum Δp is 0.3 bar. Maximum pressure ratings vary by coil type (AB, AM, AK) and valve size, ranging from 10 bar to 16 bar.
Spare parts
Spare parts kits are available for the NC version of the EV220A valves. When ordering, identify the correct code number based on the valve size (6-50) and the seal material (EPDM, NBR, or FKM) used in your specific unit.
Manufacturer information
Danfoss A/S
Practical help
Common problems
Valve fails to open or close
Verify that the operating pressure differential (Δp) meets the minimum requirement (0.2 bar for sizes 6-10; 0.3 bar for sizes 12-50).
Seal degradation
Ensure the media temperature and type are compatible with the seal material (EPDM, NBR, or FKM) as specified in the temperature table.
Before use
- Verify the valve type (NC or NO).
- Check the seal material compatibility with the media.
- Confirm the media temperature is within the specified range.
- Ensure the system pressure differential meets the minimum Δp requirement.
- Select the appropriate coil type (AB, AM, or AK) for the application.
Specs in practice
- Seal Material
- The material of the internal seals (EPDM, NBR, FKM) which dictates chemical and temperature resistance.
Images and diagrams
- The diagram shows the relationship between media temperature and pressure differential.
- The exploded view illustrates the assembly sequence for the NC version spare parts kit.
Model compatibility
- EV220A (NC) valves support a wide range of coils (AB, AM, AK).
- EV220A (NO) valves have specific coil compatibility limitations.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.