Liquid Ammonia Solenoid Valves
Liquid Ammonia solenoid valves (low-temperature resistant series) are AC/DC-powered automatic valves, mainly applicable for control systems of pipelines carrying liquid ammonia, liquid nitrogen, liquid oxygen, ultra-low temperature refrigerants, and other media. As low-temperature resistant solenoid valves, they are widely used in fields such as refrigeration equipment, aerospace, marine heavy industry, petrochemicals, power generation, chemical industry, light industry, machinery, scientific research, drying equipment, and automatic pipeline medium control.
Previously applicable to ammonia systems, HCFC/HFC refrigerants, clean water, and low-viscosity engine oil, the series now expands its scope to cover cryogenic and corrosive fluids, combining high reliability and wide adaptability.
Key Features of Liquid Ammonia Solenoid Valves
Versatile compatibility: Suitable for liquids, gases, and oils, expanding the application range.
Specialized plastic-sealed coil: Enhances valve reliability with waterproof and moisture-proof performance.
CNC-machined components: Ensures high precision and operational reliability.
Original imported sealing materials: Service life is ten times that of similar products.
Flexible on-site installation: Fast response speed; valve body adopts hot forging process with an aesthetic appearance.
Unique design: Elegant appearance, piston-type structure for stable performance; low-temperature resistant materials ensure excellent sealing.
High-quality stainless steel body: Adopts diaphragm seal structure, enabling low pressure difference startup (0.03MPa).
Cold-bonded sealed moisture-proof excitation coil: Prevents medium erosion.
Imported PTFE-reinforced composite diaphragm: Ensures corrosion resistance and sealing stability.
Technical Parameters of Liquid Ammonia Solenoid Valves
| Parameter Category | Specifications |
|---|---|
| Nominal Diameter | DN1~DN1000 |
| Valve Body Material | Stainless steel 304/316, 316L |
| Operating Temperature Ranges | -200℃~100℃, -40℃~+80℃ |
| Protection Performance | Corrosion-resistant, waterproof, explosion-proof (Exd IICT5) |
| Wiring Method | Terminal block type, lead wire type, plug type |
| Control Mode | Normally Open (NO), Normally Closed (NC), Self-holding type |
| Power Supply Voltage | DC12~DC24V, AC110V~AC220V, etc. (supports custom voltages) |
| Applicable Medium | Liquid nitrogen, liquid ammonia, liquid oxygen, alcohol, refrigerant liquids/gases, and other corrosive fluids; ammonia systems, HCFC/HFC refrigerants, clean water, engine oil with viscosity ≤4°E or <50CSt (technical requirements required for viscosity >50CSt) |
| Connection Method | Internal thread, flanged (external thread and special interfaces are customizable or available with adapters) |
| Maximum Operating Pressure | 6.4MPa (64bar) |
| Leakage | Zero |
| Note | Customized models available based on technical requirements; suitable for ultra-low temperature and high-corrosion working conditions. |
Installation Instructions
1. During installation, ensure the arrow marked on the valve body is consistent with the flow direction of the medium. Do not install the valve in areas with direct dripping or splashing water. The liquid ammonia solenoid valve shall be installed vertically upward.
2. The solenoid valve can work normally when the power supply voltage fluctuates within the range of -10% to +15% of the rated voltage.
3. After installation, there shall be no reverse pressure difference in the pipeline. Conduct several power-on tests to make the valve adapt to the working temperature before formal operation.
4. Thoroughly clean the pipeline before installing the solenoid valve. Ensure the conveyed medium is free of impurities, and install a filter in front of the valve.
5. To ensure continuous system operation during valve failure or cleaning, a bypass device shall be equipped.
Application Fields
1. Petrochemical Industry: Frequent switching control of corrosive liquids and gases is required in petrochemical production. The Yiluoke stainless steel liquid ammonia solenoid valve provides efficient and reliable fluid control for such working conditions.
2. Pharmaceutical Industry: The pharmaceutical industry imposes extremely high requirements on equipment hygiene and safety. Featuring excellent corrosion resistance and hygienic performance, the Yiluoke stainless steel liquid ammonia solenoid valve is widely applied in this industry.
3. Food Processing Industry: The food processing industry has strict standards for equipment safety and sanitation. The Yiluoke stainless steel liquid ammonia solenoid valve fully meets relevant requirements and delivers stable and reliable fluid control for food processing procedures.
4. Other Industrial Fields: In addition to the above industries, the Yiluoke stainless steel liquid ammonia solenoid valve is also extensively used in shipbuilding, electric power, metallurgy and other industrial sectors.
