Danfoss EVR 20 v2 solenoid valve

The Danfoss EVR 20 (version 2) is a servo operated (diaphragm) solenoid valve for the liquid, suction and hot gas lines of refrigeration and air conditioning systems. With a Kv of 6 m³/h, it handles about 81.5 kW in the liquid line with R404A and 120.3 kW with R22 or R407C, at Danfoss rated conditions. It is available normally closed (NC) or normally open (NO), solder 7/8″, 1 1/8″, 28 mm ; flange. The valve body is sold without coil.

The models

NC = normally closed (closed with coil de-energized), NO = normally open (open with coil de-energized). Valve bodies supplied without coil. Same valves under another code (other packing): 032L1240 = 032L5092.

Rated capacity (kW)

Danfoss values. Liquid and suction: evaporating −10 °C, liquid at 25 °C ahead of the valve, pressure drop 0.15 bar. Hot gas: condensing 40 °C, pressure drop 0.8 bar, hot gas at 65 °C, subcooling 4 K. For other conditions, we run the calculation with Danfoss Coolselector.

Flange sets for the EVR 20 flange version

The flange version is ordered with a flange set, weld or solder:

Specifications

• Operation: servo operated (diaphragm). Minimum opening differential pressure 0.03 bar.
• MOPD (maximum opening differential pressure, liquid line): 38 bar with a 10 W AC coil, 20 bar with a 20 W DC coil; 19 bar for the NO version.
• Pressures: 45.2 bar maximum working pressure (solder versions), 32 bar (flange versions); 49 bar under the PED for solder versions without manual stem.
• Media temperature: −40 to 105 °C, and up to 130 °C during defrost.
• Refrigerants: more than 40 refrigerants approved by Danfoss, including R404A, R507A, R407C, R410A, R134a, R448A, R449A, R452A, R513A and R22. Solder versions without manual stem also accept the flammable refrigerants R290, R600a, R32, R454B, R454C, R455A and R1234yf; flare versions, A2L only. Details in each model.
• Construction: brass body, extended copper ends on solder versions, so the valve does not need to be dismantled for brazing.
• Manual operation (“+ manual” models): a stem opens the NC valve with the coil de-energized, in about 6 turns, for example for evacuation or troubleshooting. Close it again and refit the cap afterwards.
• Test magnet: any EVR NC or NO valve can also be opened or closed by hand, with the coil removed, using the Danfoss 018F0091 magnet.

Coil

The valve body is sold without coil. EVR valves take the Danfoss clip-on coils: the standard coil is the BE230AS (018F6701, 230 V AC, IP67 terminal box), as given in the Danfoss data sheet. The maximum opening differential pressure (MOPD) depends on the coil: the values given here are those of the Danfoss data sheet, with a 10 W AC or 20 W DC coil. For an ATEX zone, see the BV024A coil.

All sizes are listed in our Danfoss EVR v2 solenoid valve range, with a selection table. Neighbouring sizes: EVR 18 and EVR 22. For a reversible circuit, see the EVRC bi-flow solenoid valve.

Afric Froid, your Danfoss supplier

Afric Froid supplies Danfoss solenoid valves, coils and valves, installs them and provides after-sales service in Tunisia, Algeria, Senegal and Ivory Coast. Tell us the refrigerant, the capacity and the line (liquid, suction or hot gas): we will choose the right valve and coil and send you a quote.