TECHNIAL STANDARD
1.Nominal Pressure:PN≤1.6MPa
2.Working Medium:Water non-combustible gas
3.Working Temperature:0℃≤T≤60℃
4.Pipe thread to ISO 228
DN | SIZE | A | B | C | D | n | E |
40 | 11/2 | 164 | 63 | 110 | 145 | 4 | 18 |
50 | 2 | 178 | 63 | 125 | 160 | 4 | 18 |
65 | 212 | 210 | 112 | 145 | 180 | 4 | 18 |
80 | 3 | 236 | 117 | 160 | 195 | 4 | 18 |
100 | 4 | 262 | 130 | 180 | 215 | 8 | 18 |
150 | 6 | 270 | 159 | 240 | 280 | 8 | 23 |
200 | 8 | 330 | 211 | 295 | 335 | 8 | 23 |
250 | 10 | 520 | 350 | 350 | 390 | 12 | 23 |
300 | 12 | 600 | 425 | 400 | 440 | 12 | 23 |
brass flange float ball valve: Environmental Standards, Performance Testing, Installation, and Troubleshooting
The brass flange float Ball valve is an essential component in liquid-level management systems, widely used in industrial, commercial, and municipal applications. Designed with a flanged connection and a float-operated ball mechanism, it provides automatic, precise control of liquid levels, preventing overflow and protecting pumps.
This article offers a comprehensive guide covering environmental compliance, performance testing, installation procedures, and troubleshooting, providing engineers, facility managers, and procurement professionals with all the information needed for optimal use of brass flange float ball valves.
A brass flange float ball valve is a mechanical device that automatically regulates liquid levels in tanks, reservoirs, and piping systems. The float ball rises or falls with the liquid level, opening or closing the valve accordingly.
Key Features:
Durable brass body with flange connection for secure installation
Float-operated ball mechanism for automatic liquid level control
Corrosion-resistant and leak-proof construction
Suitable for water, oil, and non-corrosive liquid applications
Requires no external power source for operation
Brass flange float ball valves are designed to meet modern environmental and safety standards, ensuring responsible and efficient operation:
Manufactured from lead-free brass or low-lead alloys to meet drinking water and environmental regulations
Compliant with RoHS and NSF/ANSI 61 standards for potable water systems
The float mechanism operates mechanically without external electricity, reducing energy consumption and carbon footprint
Brass components are fully recyclable, supporting sustainable manufacturing and waste reduction
Non-toxic materials ensure safe use in potable water and food-grade applications
Reduces environmental hazards from leakage or corrosion
| Environmental Feature | Description |
|---|---|
| Lead-Free Material | Compliant with NSF/ANSI 61 for safe drinking water |
| RoHS Compliance | Free from hazardous substances |
| Energy-Free Operation | Float mechanism requires no external power |
| Recyclable Materials | Brass components are environmentally friendly |
| Non-Toxic | Safe for potable water and industrial fluids |

Performance testing ensures that brass flange float ball valves operate reliably under varying conditions.
Valves are subjected to pressure testing to ensure zero leakage under maximum operating pressure
The float is tested for smooth movement and precise valve operation
Ensures proper opening and closing at designated liquid levels
Valves are tested for rated pressure (up to 16 bar) and temperature limits (up to 100°C–120°C)
Confirms durability and resistance to operational stress
Ensures the valve maintains proper flow control without causing turbulence or cavitation
| Test Type | Purpose |
|---|---|
| Leak Test | Verify zero leakage under rated pressure |
| Float Mechanism Test | Ensure smooth operation and accurate liquid-level control |
| Pressure & Temperature Test | Validate durability and resistance to operational stress |
| Flow Rate Verification | Confirm proper flow without turbulence |
Proper installation ensures optimal performance and extended service life.
Verify valve size, flange type, and flow direction
Inspect valve and float for shipping damage or debris
Ensure pipeline is clean and free from particles
Align valve flanges with pipeline flanges
Insert gaskets between flanges to prevent leakage
Secure with appropriate bolts and nuts, tightened evenly in a crisscross pattern
Ensure the float has adequate vertical travel without obstruction
Check that the valve orientation matches the designated flow direction
Fill the tank and observe the automatic operation of the float ball
Check for leaks at flange connections
Adjust float height if necessary for desired liquid-level set points
Tip: Avoid overtightening bolts to prevent flange distortion or valve body damage.
Even high-quality brass flange float ball valves may experience operational issues. Understanding common faults helps maintain system reliability.
| Problem | Possible Cause | Solution |
|---|---|---|
| Valve fails to open or close | Float stuck or obstructed | Inspect and clean float; remove debris |
| Leakage at flange connections | Loose bolts or damaged gasket | Tighten bolts evenly; replace gasket if necessary |
| Inaccurate liquid level control | Float height misadjusted or float damaged | Adjust float or replace if damaged |
| Corrosion or scaling | Poor water quality or harsh fluids | Clean valve internals; consider water treatment |
| Noise during operation | High flow velocity or turbulence | Reduce flow rate or install flow stabilizers |
Inspect valves every 6–12 months for wear or debris
Clean float and internal components as needed
Replace worn gaskets, seals, or float assemblies
Lubricate moving parts sparingly with manufacturer-approved materials
| Feature | Brass Flange Float Ball Valve | Traditional Float Valve |
|---|---|---|
| Material Quality | Durable, corrosion-resistant brass | Often lower-grade metals or plastics |
| Flange Connection | Secure, leak-proof installation | Threaded connections may loosen over time |
| Automatic Operation | Precise and reliable float mechanism | Less precise; may require manual adjustment |
| Environmental Compliance | Lead-free, RoHS, recyclable | Often not compliant with modern standards |
| Maintenance Requirement | Low-maintenance design | More frequent cleaning and adjustment |
Insight: The brass flange float ball valve provides enhanced durability, environmental compliance, and precise liquid level control, making it suitable for demanding applications.
The brass flange float ball valve is an essential component for managing liquid levels efficiently, safely, and reliably in industrial, commercial, and municipal systems. With durable construction, flange connections, and a precise float-operated mechanism, it ensures automatic liquid-level regulation, leak-free performance, and minimal maintenance.
By following installation guidelines, performance testing procedures, and maintenance schedules, users can achieve long-lasting operation, compliance with environmental standards, and optimal system efficiency. The brass flange float ball valve represents a reliable, energy-free, and environmentally responsible solution for modern fluid management systems.
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