Danfoss EV250B with assisted lift can operate from zero and up to 10 bar differential pressure.
This 2/2-way valve program is especially to use in closed circuits with low differential pressure, but demanding moderate flow rates. Valve body in dezincification resistant brass for ensuring a long life even in connection with aggressive steam media.
EV250B is compatible with the broad Danfoss coil program with enclosures from IP00 up to IP67. Medium temperatures up to 140 °C (low pressure steam).
An optimum water hammer damped assisted-lift solenoid valve
In general it is the closing speed of the valve that determines the water hammer phenomenon. In reality the water hammer comes just before the valve closes. By controlling the closing speed at this stage the water hammer can be reduced. On the Danfoss valve it is done by having an optimized shape of the moulded diaphragm, a reinforcement giving an internal damping and a special damping cone giving a viscous damping in the very late closing stage.
High opening degree at zero or low differential pressures
On an assisted lift valve, the armature spring also closes the diaphragm. Owing to the increased thickness on the sealing point of the diaphragm of the EV250B valve, only a very low closing force is needed from the spring. This means you get a high lift at zero differential pressures.
Suitable for the innovative clip-on coil system
EV250B is designed for use with the new customer friendly clip-on coil system ensuring faultless mounting, making assembling and dismantling simple and safe. Furthermore you get a hermetic seal against moisture penetration when this is needed. In other words, not only do you get a tighter sealing, but also a safer and more stable fastening.
Especially applicable for aggressive low-pressure steam
Because the EV250B works even with zero differential pressure, main applications are closed heating systems and emptying of tanks. But it’s also recommendable for low-pressure steam up to 140°C, and especially suitable for low-pressure steam produced from technical water (demineralised deionised water), which is very aggressive to common brass. The EV250B valve body is produced in dezincification resistant brass (DZR brass) and so is suitable for aggressive technical water and steam.
The EV250B is available with different water approvals, e.g. the British WRAS approval. It is also available with hum-free coils, with American NPT threads and UL approval, with IP 67 protection, with EEx coils, and with a pending DNV ship approval.
• Suitable for open and closed systems
• Suitable with the innovative clip-on coil
• Easy installation with new mounting guide
• Improved corrosion resistance through DZR brass housings
• New EPDM diaphragms with excellent opening degree at low pressure
• Drinking water approvals (WRAS, VA)
• UL approvals (pending)
• Six Sigma quality
• Industrial heating system
• Closed systems (fluid controls)
• Low pressure steam (up to 140°C)
• Low pressure systems (central heating, emptying of tanks and tubes by gravity)
• Rough vacuum systems
• Water filtration, water applications (drinking water approval with EPDM seal material)
• Safety systems (water shut off )
Danfoss EV250B Assisted-lift 2/2-way solenoid valves complete with coils
The Danfoss solenoid valve program includes valves suitable for most open and closed systems. The program comes complete with the clip-on coil and IP65 electrical plug and has been carefully designed to simplify product selection. Appendix “02” for 24 V dc, “16”/”82” for 24 V ac and “31” / “84” for 230 V ac
To select the right valve all that is required to be known is:
• Open or closed pipe work system
• Pipe size
• Electrical voltage
Byggforsk-gforsk - Byggforsk Solenoid valve, EV 250B
CARSO-SO - Laboratoire Santé Environnement Hygiène de Lyon Solenoid valve, EV 270B
CARSO-SO - Laboratoire Santé Environnement Hygiène de Lyon Solenoid valve, EV 210B
CSA-Canadian Standards Association Solenoid valve, EVI 1.5U;EVI 2U;EVI 3U;EVI 6;EVI 10
DNV-Det Norske Veritas Solenoid valve, EV220B 6B;EV220B 10B;EV220B 12B;EV220B 15B;EV220B 20B;EV220B 25B;EV220B 32B;EV220B 40B;EV220B 50B
ETA-Europan Technical Approval Solenoid valve, EV 250B
ETA-Europan Technical Approval Solenoid valve, EV250B
GOST-T - Russian Government Standardization Solenoid valve, EV
GOST-T - Russian Government Standardization Coil, CT
PZH-National Institute of Hygiene Solenoid valve, EV 250B
UL-Underwriters Laboratories inc. Solenoid valve, EV
WRAS-S - Water Regulations Advisory Scheme Solenoid valve, EV250B 10BD;EV250B 12BD;EV250B 18BD;EV250B 22BD
Spare parts kits for EV250B