SKU: 78481
| Attribute | Details |
|---|---|
| Manufacturer | Danfoss A/S |
| Product Type | Pressure Control Switch |
| Model / Type | RT121 |
| Part Number | 017-521566 |
| Pressure Range | -1…0 Bar / 0–100 KPa / 0–30 InHg / 0–75 cmHg |
| Differential Range | 0.09–0.4 Bar / 9–40 KPa / 4–12 InHg |
| Pressure Connection | G 3/8 A |
| Switch Function | Pressure Control / Automatic Reset |
| Country of Origin | Made in Poland |
| Weight | 1.010 Kg |
The Danfoss RT121 Pressure Control Switch (017-521566) is a robust, reliable pressure control device designed for monitoring and regulating air, gas, and liquid pressures across industrial and marine applications. With a range of -1 to 0 bar (0–100 KPa), it provides precise pressure switching for vacuum and low-pressure systems. The RT series is known for its long service life, mechanical durability, and stable performance, making it ideal for demanding control environments where reliability is critical. This model includes an adjustable differential setting for precise control between cut-in and cut-out pressures.
Engineered with high-quality components and manufactured under strict Danfoss standards, the RT121 features a G 3/8 A connection and is built for compatibility with a wide range of process systems. Its rugged metal enclosure and accurate pressure-sensing mechanism ensure consistent performance in both indoor and outdoor installations. Whether used in refrigeration systems, compressors, or hydraulic control setups, the RT121 provides exceptional protection and accuracy under varying environmental conditions.

Key Features:
1. Wide Pressure Range: Operates from -1 to 0 Bar (0–100 KPa) for vacuum control.
2. Adjustable Differential: Fine-tune pressure difference from 0.09–0.4 Bar for precise control.
3. High Accuracy: Reliable pressure sensing for critical industrial processes.
4. Robust Construction: Built for long life and stable performance in harsh environments.
5. Compact Design: Easy to install in control panels and tight system spaces.
6. Corrosion-Resistant Housing: Suitable for humid and outdoor conditions.
7. Standard G3/8 A Connection: Ensures easy integration into existing pressure systems.
8. Versatile Application: Compatible with air, liquid, and vacuum systems.
9. Reliable Mechanical Reset: Automatic pressure reset for continuous operation.
10. Proven Danfoss Quality: Designed and tested for industrial and marine durability.
Applications:
1. Refrigeration Systems: Used for vacuum and pressure monitoring in cooling circuits.
2. Air Compressors: Controls cut-in/cut-out pressure for system efficiency.
3. Marine Equipment: Maintains safe pressure levels in onboard systems.
4. Hydraulic Systems: Monitors low-pressure zones for safety and performance.
5. Process Control Plants: Regulates pressure in automation and control systems.
6. Pneumatic Equipment: Ensures stability in air-powered industrial tools.
7. Vacuum Systems: Provides accurate control in suction and evacuation applications.
8. Energy Systems: Used in oil, gas, and renewable energy pressure setups.
9. HVAC Installations: Maintains pressure balance in heating and cooling systems.
10. Testing & Calibration Benches: Offers precise measurement control for lab setups.
Explore the reliable Four-Way Valve at Aeliya Marine Tech designed for precise pneumatic control, durable construction, and long-lasting performance in industrial automation and fluid control systems.
Hassle-Free Returns & Refunds at Aeliya Marine Tech
We at Aeliya Marine Tech are committed to your satisfaction. If you encounter any issues with your purchase, we want to ensure a smooth and worry-free resolution. Here's what you need to know about our return and refund policy:
Peace of Mind with a 30-Day Warranty:
We offer a generous 30-day warranty on all products from the date of delivery. If your product isn't functioning properly within this timeframe, you can easily request a replacement or refund.
What Can Be Returned?
- Products that are not working as expected (non-functional)
- Products with condition or malfunction issues
- Products with minor cosmetic damages (excluding damage caused during shipping)
Easy Return Process:
- Gather Proof of Purchase: Locate your receipt or invoice with the PI/PO Number, Invoice Number, and Date of Delivery.
- Contact Us: Reach out to our friendly customer support team at sales@aeliyamarine.com or call us at +91 9725218537.
- Return the Product: Securely package the product in its original packaging (if possible) and ship it to the address below:
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We understand the need for a seamless experience. If you receive a defective or damaged item, we offer a straightforward exchange for the same product. Simply contact us via email at sales@aeliyamarine.com, and we'll guide you through the process.
Warranty Validation:
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