ROBO Float Valve (Remote Float Control Valve) is a specialised device designed to automatically open and close the water flow in storage tanks based on the actual water level, manufactured by ROBO – Vietnam. With a modern design, a sturdy structure made from ductile iron and stainless steel, along with high-pressure-resistant NBR rubber gaskets, the product ensures stable and durable operation under various conditions.
The ROBO float valve not only meets international standards for design and connection but also helps reduce labour requirements, prevent tank overflow or water shortage, and ensure safe and continuous system operation. It is an optimal choice for water supply and drainage systems, as well as industrial applications and fire protection systems (FACP).
Outstanding Features of ROBO Float Valve
If you are still concerned about the product’s quality, let Thép Bảo Tín walk you through the key outstanding features of the ROBO float valve below:
- Automatic water level control: The valve operates based on a mechanical float, allowing precise opening and closing of the water flow according to the actual water level in the tank.
- International-standard design: Manufactured according to BS EN 1074-5 and BS 5163-2 standards, with flange connections compliant with BS4504, DIN2632, DIN2633, and ASME B16.42, ensuring compatibility and easy installation across various systems.
- High-quality materials: The valve body is made of ductile iron ASTM A536, while critical components such as springs, shafts and piping are made from stainless steel 304/316, combined with NBR rubber gaskets to enhance durability and corrosion resistance.
- Smooth operation with low maintenance: A simple yet robust structure minimises vibration and wear, eliminating the need for frequent maintenance.
- Flexible size range: Available in sizes from DN50 to DN300, suitable for a wide range of projects from small to large scale.
- Stable performance: Operates efficiently under pressure ratings of PN10 – PN16 and temperature conditions from -10 to 80°C, meeting the requirements of both residential and industrial systems.
Technical Specifications of ROBO Float Valve
To help you easily assess its operating capability and choose the right product, below is the detailed technical specification table of the ROBO float valve according to the official catalogue:

| Specification | Value / Description |
|---|---|
| Design Standards | BS EN 1074-5, BS 5163-2 |
| Face-to-Face Standards | ISO 5752, BS EN 558-1 |
| Flange Connection Standards | BS4504, DIN2632, DIN2633, ASME B16.42 |
| Working Pressure | PN10 – PN16 |
| Operating Temperature | -10°C ~ 80°C |
| Body Material | Ductile Iron (ASTM A536) |
| Seat / Sealing Material | NBR Rubber |
| Main Spring | Stainless Steel (ASTM A531 CF8) |
| Other Components | Stainless steel 316 tubing; brass needle valve & Y-strainer (ASTM B824); stainless steel 304 bolts |
| Size Range | DN50 – DN300 |
>> The ROBO brand also manufactures a wide range of other valves. Check out the ROBO Valve Catalogue for more options!
Detailed size chart

| Size (DN) | Model | L (mm) | D (mm) | K (mm) | H (mm) |
Số lỗ bulông (n-∅d)
|
| DN50 | HCF-050 | 190 | 165 | 125 | 161 | 4-∅19 |
| DN65 | HCF-065 | 216 | 185 | 145 | 191 | 4-∅19 |
| DN80 | HCF-080 | 254 | 200 | 160 | 217 | 8-∅19 |
| DN100 | HCF-100 | 328 | 220 | 180 | 252 | 8-∅19 |
| DN125 | HCF-125 | 356 | 250 | 210 | 287 | 8-∅23 |
| DN150 | HCF-150 | 406 | 285 | 240 | 324 | 8-∅23 |
| DN200 | HCF-200 | 521 | 340 | 295 | 392 | 12-∅23 |
| DN250 | HCF-250 | 635 | 405 | 350 | 445 | 12-∅28 |
| DN300 | HCF-300 | 749 | 460 | 400 | 508 | 12-∅28 |
Practical Applications of ROBO Float Valve
With precise water level control and stable operation, the ROBO float valve is well-suited for use in a variety of systems, including:
- Domestic water supply systems: Used in household water tanks, residential areas, and apartment buildings.
- Industrial plants: Controls water levels in storage tanks, treatment tanks, cooling systems, or production lines.
- Urban water supply and drainage systems: Applied in underground tanks, pumping stations, and reservoirs.
Economic Benefits of Using ROBO Float Valve
In addition to operational convenience, the ROBO float valve offers significant economic benefits for businesses and users:
- Labour cost savings: With its ability to automatically open and close in response to water level changes, the valve eliminates the need for manual monitoring and adjustment.
- Reduced water loss: Minimises tank overflow and depletion, helping to save water and reduce system operating costs.
- Extended equipment lifespan: Maintaining stable water levels protects pumps, pipelines, and related equipment, reducing repair and replacement costs.
- Long-term investment efficiency: With high durability and low maintenance requirements, the product ensures economic efficiency throughout its service life, optimising initial investment.
- Versatile applications: The ROBO float valve can be used in a variety of systems, such as water supply, industrial, and fire protection systems, helping businesses save on equipment procurement costs.
Installation and Maintenance Instructions
To ensure the stable operation and long service life of the ROBO float valve, installation and maintenance must follow proper technical procedures. Below are the detailed guidelines:
Installation Instructions

Step 1: Prepare the piping: Ensure the pipes are clean and free of debris or sediment before installation.
Step 2: Determine the position: Install the valve on the pipeline leading to the storage tank, and position the float at the desired water level to be controlled.
Step 3: Connect the flange: Align according to the appropriate connection standards (BS, DIN, ASME) and tighten bolts evenly to avoid misalignment that could cause leaks.
Step 4: Install auxiliary valves: Integrate with needle valves, ball valves, and Y-strainers according to the accompanying diagram to ensure precise operation.
Step 5: Operation check: After installation, gradually open the water supply to check for leaks and observe the opening/closing function.
Maintenance Instructions
- Periodic cleaning: Remove and clean the Y-strainer to prevent blockages caused by debris or sediment.
- Float inspection: Ensure the float is not stuck, cracked, broken, or unbalanced.
- Check needle valve & gaskets: Regularly inspect the sealing performance of the NBR rubber gaskets and replace them if signs of ageing appear.
- Light maintenance: Apply anti-rust grease to bolts, wing screws, and stainless steel shafts to extend their service life.
- System test: After each maintenance, run the system to ensure the valve opens and closes smoothly and the water level remains stable.
Following the steps above will help your ROBO float valve operate reliably, minimise malfunctions, and maximise efficiency over the long term.
Bao Tin Steel – Official Distributor of ROBO Valves
Currently, Bao Tin Steel is a reputable distributor of ROBO valves, offering a wide range of products from check valves, gate valves, butterfly valves, to high-quality ROBO float valves.
Our Commitments:
- Genuine products with complete certificates of origin
- Dedicated technical consultation
- Competitive prices – Nationwide delivery
Contact Hotline: 0932 059 176 for prompt support and to receive the best quotation today

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