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Model No.: EVRA 25
Actuator: Pneumatic
Connection Form: Flange
Type: Pilot Operated
Material: Cast Iron
Pressure: High Pressure
Valve Structure: Pilot Piston Structure
Power Supply: AC Solenoid Valve
Usage: Flow Control
Standard: DIN
Application: Industrial Usage
Packaging: Pvc bag , Inner Box, Carton, Pallet
Transportation: Ocean,Air
Port: Ningbo,Shanghai,Guangzhou
Payment Type: T/T,Paypal,Western Union
Incoterm: FOB,CFR,CIF,EXW
Danfoss Type 032F6225 EVRA 25 Ammonia Solenoid Valve
Material specification of EVRA 25 Ammonia Refrigerants Servo Operated Piston Refrigeration Solenoid Valve:
No. Description Solenoid Valves Material Analysis ISO EN 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 4 Flange EVRA 25 Steel S235JRG2 10025 EVRA 32/40 Steel P285QH 10222-4 5 Gasket EVRA 25/32/40 Aluminium Al99.5 10210 6 Gasket EVRA 25 asbestos-free EVRA 32/40 Rubber Cr 7 Cover/thread plug EVRA 25 Free-cutting steel 11SMnPb30 10277-3 EVRA 32/40 Stainless Steel X5CrNi17-10 1088 8 Gasket EVRA 25 Rubber Cr 9 Bolts EVRA 25 Stainless Steel A2-70 3506 10 Cover EVRA 25 Cast-iron GJS-400-18-LT 1563 11 Bolts EVRA 25/32/40 Stainless Steel A2-70 3506 12 Valve Seat EVRA 25 Teflon(PTFE)
EVRA 25 Design Function:
4. Coil
16. Armature
18. Valve plate / Pilot valve plate
20. Earth terminal
24. Connection for flexible steel
hose
28. Gasket
29. Pilot orifice
30. O-ring
31. Piston ring
36. DIN plug
40. Terminal box
43. Valve cover
44. O-ring
45. Valve cover gasket
48. Flange gasket
49. Valve body
51. Cover / Threaded plug
53. Manual operation spindle
59. Strainer
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.
EVRA25 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.
Technical data:
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) | Temperature °C | Max. working pressure | kv-value 1) | |||
Min. | Max. (= MOPD) liquid 2) | ||||||
10 W a.c. | 12 W a.c. | 20 W d.c. | |||||
EVRA 25 | 0.20 | 21 | 25 | 14 | –40 → 105 | 42 | 10 |
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.
Dimensions of EVRA 25 Ammonia Solenoid Valve:
Product Categories : Refrigeration Solenoid Valve > Ammonia Solenoid Valve
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.