STF FDF-MB and FDF-MBJ SAE Threaded Refrigeration Solenoid Valves
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STF FDF-MB and FDF-MBJ SAE Threaded Refrigeration Solenoid Valves
PRODUCT DESCRIPTION
STF FDF-MB and FDF-MBJ solenoid valves are pilot-operated diaphragm valves designed for automatic refrigerant flow control in refrigeration, freezing and air-conditioning systems.
These compact brass valves use threaded SAE connections and are suitable for installation in liquid, suction and hot-gas lines, subject to the selected refrigerant, coil and operating conditions.
Normally closed versions are commonly supplied. Normally open configurations are available for selected models. AC and DC coil options are available and must be confirmed when ordering.
KEY FEATURES
• Pilot-operated diaphragm construction
• SAE threaded refrigerant connections
• Suitable for liquid, suction and hot-gas lines
• Normally closed and selected normally open versions
• Multiple AC and DC coil-voltage options
• Maximum working pressure up to 30 bar
• Medium temperature range from −25°C to +105°C
• Compact brass valve construction
• Designed for refrigeration and air-conditioning systems
GENERAL TECHNICAL DATA
| Parameter | Specification |
|---|---|
| Valve Type | Pilot-operated diaphragm solenoid valve |
| Connection Type | SAE threaded connection |
| Maximum Working Pressure | 30 bar |
| Medium Temperature Range | −25°C to +105°C |
| NC Opening Differential – AC | 0.05–21 bar |
| NC Opening Differential – DC | 0.05–17 bar |
| NO Opening Differential – AC | 0.05–18 bar |
| NO Opening Differential – DC | 0.05–15 bar |
| Available AC Coils | 24 V, 36 V, 110 V, 220 V |
| Available DC Coils | 12 V, 24 V, 110 V, 220 V |
| Valve Body Material | Brass |
| Manufacturer | Shanghai Thermostat Factory Co., Ltd. |
| Brand | Shangheng / STF Controls |
VERIFIED MODEL DATA
| Model | Nominal Port | Kv Value | Approximate Dimensions |
| FDF8MB | 10 mm | 0.8 m³/h | 85 × 45 × 85 mm |
| FDF10MBJ | 12 mm | 1.9 m³/h | 87 × 45 × 85 mm |
| FDF13MBJ | 16 mm | 3.0 m³/h | 107 × 52 × 98 mm |
APPLICATIONS
• Commercial refrigeration systems
• Cold-storage condensing units
• Refrigerated display equipment
• Air-conditioning systems
• Liquid-line control
• Suction-line control
• Hot-gas control where approved
| Model |
FDF8MBJ, FDF10MBJ, FDF13MBJ |
|---|