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Model No.: EVRA 32
Danfoss Type EVRA 32 042H1140 Ammonia Solenoid Valve
EVRA 32 solenoid valve is designed mainly for ammonia refrigerants, it is supplied complete or as separate components, i.e. valve body, coil and
flanges can be ordered separately.
Refrigerants:Applicable to HCFC, HFC and R717 (Ammonia).
Temperature of medium:
−40 → +105°C.
Max. 130°C during defrosting.
|Type|| Opening differential pressure |
with standard coil ( ∆p bar)
| Max. working |
|Min.||Max. (= MOPD) liquid 2)|
|10 W a.c.||12 W a.c.||20 W d.c.|
|EVRA 40||0.20||21||25||14||–40 → 105||42||16|
1) The kv value is the water flow in m3/h at a pressure drop across valve of 1 bar, ρ = 1000 kg/m3.
2) MOPD for media in gas form is approx. 1 bar greater.
EVRA 32 and EVRA 40 Design Function:
18. Valve plate / Pilot valve plate
20. Earth terminal
24. Connection for flexible steel
29. Pilot orifice
31. Piston ring
36. DIN plug
40. Terminal box
43. Valve cover
45. Valve cover gasket
48. Flange gasket
49. Valve body
51. Cover / Threaded plug
53. Manual operation spindle
73. Equalization hole
74. Main channel
75. Pilot channel
76. Compression spring
80. Diaphragm/Servo piston
82. Support washer
83. Valve seat
84. Main valve plate
EVRA 25, 32 and 40 are servo operated piston valves. The valves are closed with currentless coil. The servo piston (80) with main valve plate (84) closes against the valve seat (83) by means of the differential pressure between inlet and outlet side of the valve, the force of the compression spring (76) and possibly the piston weight. When current to the coil is switched on, the pilot orifice (29) opens. This relieves the pressure on the piston spring side of the valve. The differential pressure will then open the valve. The minimum differential pressure needed for full opening of the valves is 0.2 bar.
Material specification of 042H1140 EVRA 32 Ammonia Refrigerants Servo Operated Piston Refrigeration Solenoid Valve:
|1||Valve body||EVRA 25/32/40||Cast-iron||GJS-400-18-LT||1563|
|2||Armature tube nut||EVRA 25/32/40||Stainless Steel||X8CrNiS 18-9||10088|
|3||Armature tube||EVRA 25/32/40||Stainless Steel||X2CrNi19-11||10088|
|7||Cover/thread plug||EVRA 25||Free-cutting steel||11SMnPb30||10277-3|
|EVRA 32/40||Stainless Steel||X5CrNi17-10||1088|
|9||Bolts||EVRA 25||Stainless Steel||A2-70||3506|
|11||Bolts||EVRA 25/32/40||Stainless Steel||A2-70||3506|
|12||Valve Seat||EVRA 25||Teflon(PTFE)|
Dimensions of EVRA 32 Ammonia Solenoid Valve:
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1. Solenoid Valve Coil
2. Solenoid Coil Connector
3. Solenoid Valve Armature Assembly
4. 5/2, 5/3, 3/2, 2/2 Way Pneumatic Solenoid Valve
5. Pneumatic Hose Fitting
6. Refrigeration Solenoid Valve
7. Dust Collector Pulse Jet Valve
8. Diaphragm Repair Kit
9. Pulse Controller
10. Air Compressor Auto Drain Valve
11. Solenoid Valve Timer
12. Brass Solenoid Valve
13. Stainless Steel Solenoid Valve
14. Plastic Solenoid Valve
15. LPG CNG Injector Rail
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