>	My Product List

Product Categories

>	Refrigeration and A/C

>	VLT® Drives

Heating

>	Silicon Power Modules

>	Industrial Automation

>	High-Pressure Pumps

>	Solar Energy

>	Print Page

EV220B (65-100 series), Servo-operated 2/2-way solenoid valves

>	Code number selector

>	Photos (2)

FAQ (17)

>	Approvals & certificates (6)

>	Literature (10)

Contact

>	Valve Selector

17 Item(s)

FAQ

Are the code numbers of the EV220B solenoid valves the same as the previous EVSI valves?
- Answer: The code numbers of the current EV220B are the same as our the previous type designation EVSI. Please note that some versions with NPT connection still use the EVSI designation.
Can I use the EV220B with chlorine?
- Answer: No, chlorine is very corrosive. For this application, we recommend using a plastic valve.
What is the difference between the EV220A and EV220B solenoid valves?
- Answer: The EV220A valve is a valve with a compact actuator and coil system, suiting many applications with known specifications. The EV220B valve offers more flexibility and an even better performance.
I need an EV220B 1/2" for an open water system. Which one should I choose?
- Answer: You can choose any 1/2" valve with EPDM seal material from the EV220B range - the choice will depend on the capacity needed.
I have mounted an EV220B valve in the warm water circuit of a heating system. The valve does not open. Is it defect?
- Answer: Under the circumstances that there is no dirt or limestone in the system, it is likely that the differential pressure is too low to operate the valve. In a closed system we recommend using a valve which doesn't require a differential pressure. If you use an assisted lift operated valve type EV250B, capable of operating from 0 bar differential pressure, your valve will work correctly.
I have ordered an EV220B valve NO, but if I blow through the valve, it is closed. Have I got a NC valve?
- Answer: Like an NC diaphragm valve, an NO valve requires a minimum differential pressure of about 0.3 bar to open. Therefore you cannot open the valve just by blowing, and so it can be difficult to decide if a valve is NC or NO just by blowing.
Why is an EV220B solenoid valve more expensive than an EV220A valve?
- Answer: The reason is that the EV220B has a higher performance - can operate with higher temperature and works under higher differential pressure.
What is the procedure for setting an MBC pressure switch?
- Answer: 1. Secure regulated pressure source with pressure gauge and state indicator for electric connector of MBC. 2. Connect the unit to pressure source and electrically to indicator. 3. Change pressure slowly and observe indicator. 4. Note down upper and lower snap point pressure. 5. If necessary, turn range screw to change setting and repeat 3. and 4. 6. Mount in the final application. 7. Verify settings with pressure gauge and indicator in the application. 8. If necessary do small adjustments. 9. Good practice - Note settings and date on the small card attached to switch. Inspect setting once in a while. Note inspection results on the same card. Keep track of abnormal events: Other elements breakdowns, servicing etc.
Is it possible to order a normally open (NO) version of the solenoid valve EV220B 65-100 Cl?
- Answer: Yes, you need to order an NC valve body and NO unit separately: NO units, ordering numbers: Seal material: EPDM: 032U0296 Seal material: FKM: 032U0295 Seal material: NBR: 032U0299
I assemble air suspension system for cars, does Danfoss have any solenoid valve for this kind of application?
- Answer: Yes, we already sell our solenoid valves types EV210 and EV220 models for similar air applications. You just need to inform us of the solenoid valve technical specifications.
What is the difference between the EV220B and EV250B valves?
- Answer: Valves type EV220B (servo-operated) are mainly used for open systems, where the differential pressure is higher than a certain value. An EV250B (assisted lift operated) can be used for both open and closed systems, but is mainly used in closed systems where the pressure conditions are low or uncertain. If you are not sure what the exact differential pressure will be, choose the EV250B.
Which solenoid valve should I choose for Glycol as a medium?
- Answer: You could choose a valve with EPDM seal material, e.g. our EV220B series.
Which solenoid valve should I choose for showers?
- Answer: For showers, you should use EPDM as seal material. Showers is an open system, so both servo-operated types EV220A and EV220B can be used.
Can I get Danfoss solenoid valves suitable for seawater?
- Answer: Yes, however the amount of salt in seawater, oxygen concentration and temperature of the water all determine how the medium influences the different solenoid valve materials. The best option is an EV220B in stainless steel, or the EV222B, featuring an isolating diaphragm.
Can I an EV220B valve for vacuum?
- Answer: No, you have to choose a valve type that will work from 0 bar differential pressure (direct-operated or assisted lift).
In a open water system, I have an EV210 valve which does not open - what can be wrong?
- Answer: Most likely the system pressure is too high. The EV210B operates from 0 to a limited differential pressure, especially on bigger valve sizes. If this is the case, we recommend a more powerful coil or a valve type EV220B or EV250B.
Are your valves certified for use with water?
- Answer: All our EV210A, EV210B, EV220A, EV220B, EV250B are certified by WRAS. Some of the EV220B valve also have the French approval ATTESTATION DE CONFORMITE SANITAIRE, ACS and the Polish approval PANSTWOWY ZAKLAD HIGIENY, PZH. All these valves have seal material in EPDM.