Normally Closed Solenoid Valve,FDF
Normally closed solenoid valve means closed when the solenoid coil is powered, and the solenoid valve is open when the solenoid coil is off. Normally closed solenoid valve apply for international standard voltage include AC 380V, 240v, 220v, 24v or DC 110V, 24V.
Coils: Compact design, low power consumption, reliable operation.
Good performance of open, big for the max. working pressure difference.
Service life ≥100,000 times
1) The Kv value is the water flow in m³/h at a pressure drop across valve of 0.1Mpa, ρ=1000kg/m³.
2) MOPD for media in gas form is apprax 0.1 Mpa greater.
Product Series |
Operation Way |
Operation Type |
Port |
Kv |
Internal Leak |
Operation Pressure Difference |
OD of connection tube |
(mm) |
(m³/h) |
( △ p=2.1MPa) (ml/min) |
Min |
Max |
(inch) |
FDF 2A |
Open when be in energized |
Direct |
φ1.9 |
0.08 |
≤300 |
3.4 |
0 |
1/4 |
FDF 2.5A |
Open when be in energized |
Servo operated |
φ2.5 |
0.2 |
≤300 |
3.4 |
0.01 |
1/4 |
FDF 3A |
Open when be in energized |
Servo operated |
φ3.0 |
0.26 |
≤500 |
3.4 |
0.01 |
1/4 |
FDF 4A |
Open when be in energized |
Servo operated |
φ4.0 |
0.3 |
≤500 |
3.4 |
0.01 |
1/4 |
FDF 6A |
Open when be in energized |
Servo operated |
φ5.8 |
0.56 |
≤500 |
3.4 |
0.01 |
5/16 |