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In industrial hose connections, the reliability of a clamp determines system safety and efficiency. Among various options available, Boss Clamp BU14 and Boss Clamp BU24 have become popular across industries for their strength, stability, and precision sealing.
Manufactured mainly from ductile iron, these clamps offer a robust solution for high-pressure applications involving air, water, oil, or slurry transport. In 2026, China’s OMEJA stands out as one of the leading suppliers of Boss Clamps—providing durable and precisely machined clamps designed for demanding industrial environments.
A Boss Clamp is a two-bolt or multi-bolt clamping device used to secure a hose onto a Boss coupling or fitting. These clamps create a strong, leak-free connection in high-pressure hose assemblies.
The BU series, including BU14 and BU24, is widely used for air, steam, and fluid transfer lines. Their double-bolt configuration ensures balanced clamping pressure and vibration resistance, reducing the risk of leaks or hose slippage.
Material: Ductile iron (for superior strength and ductility)
Bolts: Zinc-plated or stainless steel for corrosion protection
Finish: Anti-rust coating or galvanization
Type: Double-bolt design for secure and uniform sealing
Ductile iron combines strength, toughness, and elasticity, making it a preferred material for high-performance hose fittings.
| Property | Ductile Iron | Mild Steel | Gray Iron |
|---|---|---|---|
| Tensile Strength (MPa) | 400–500 | 300 | 200 |
| Elongation (%) | 10–15 | 8 | 1 |
| Fatigue Resistance | Excellent | Good | Poor |
| Corrosion Resistance | Good | Moderate | Low |
| Vibration Absorption | Excellent | Moderate | Poor |
The ductile structure absorbs mechanical stress and prevents crack propagation, ensuring long service life even in high-torque or high-vibration conditions.
| Model | Hose Outer Diameter (mm) | Bolt Size | Material | Recommended Pressure Range (bar) | Primary Use |
|---|---|---|---|---|---|
| Boss Clamp BU14 | 50–65 | M10 | Ductile Iron | 8–10 | Medium-pressure water and air hoses |
| Boss Clamp BU24 | 65–90 | M12 | Ductile Iron | 10–12 | Medium to high-pressure pipelines |
Both clamps are compatible with standard Boss couplings and designed for safe and reliable performance in industrial and agricultural settings.
The two-bolt design provides even pressure around the hose circumference, ensuring a consistent and secure seal.
The inner surface is finely machined to grip the hose without damaging its reinforcement layer.
Ensures superior tensile strength and impact resistance under heavy mechanical loads.
All clamps are finished with anti-rust coatings or galvanization for long-term outdoor and chemical resistance.
Bolts and nuts can be replaced individually, extending the clamp’s service life.
| Industry | Model | Application | Medium |
|---|---|---|---|
| Mining | BU24 | Hose coupling for slurry transport | Water, sand, slurry |
| Agriculture | BU14 | Irrigation and fertilizer hoses | Water and chemicals |
| Construction | BU24 | Concrete and mortar pumping lines | Cement and mortar |
| Manufacturing | BU14 | Compressed air systems | Air and gas |
| Petrochemical | BU24 | Oil and chemical pipelines | Fuel, oil, solvents |
Both models perform reliably under pressure, vibration, and temperature variations.
The BU14 Hose Clamp is engineered for smaller-diameter hoses requiring secure sealing under medium pressure.
Its compact design allows quick installation and maintenance, making it suitable for field applications.
Key Advantages:
Lightweight yet strong
Ideal for quick hose replacements
Compatible with rubber and PVC hoses
Typical Use:
Water hoses, irrigation systems, and low-pressure industrial air lines.
The BU24 Hose Clamp is designed for slightly larger hoses and higher operating pressures. Its M12 bolts offer stronger tightening torque, enhancing sealing performance.
Key Advantages:
Suitable for high-flow systems
Excellent vibration resistance
Optimized for repeated tightening
Typical Use:
Slurry and sand pipelines, oil lines, and high-pressure water systems.
| Parameter | BU14 Boss Clamp | BU24 Boss Clamp |
|---|---|---|
| Hose Diameter | 50–65 mm | 65–90 mm |
| Bolt Size | M10 | M12 |
| Pressure Range | 8–10 bar | 10–12 bar |
| Vibration Resistance | Moderate | High |
| Application Scope | Light to Medium Duty | Medium to Heavy Duty |
High Clamping Strength: Double-bolt system ensures balanced torque and secure sealing.
Temperature Tolerance: Ductile iron remains stable under thermal stress.
Vibration Resistance: Prevents loosening under fluctuating pressures.
Corrosion Resistance: Protective coating guards against oxidation and rust.
Reusability: Maintains thread and body integrity after multiple uses.
Ensure the hose and fitting are clean and free from oil.
Position the clamp evenly around the hose end.
Tighten both bolts alternately to apply equal pressure.
Avoid overtightening that may deform the hose.
Inspect after several hours of use, retighten if necessary.
Inspect regularly: Look for signs of corrosion or thread wear.
Lubricate bolts: Prevents seizing and maintains torque accuracy.
Replace damaged components: If cracks or deformities are visible.
Store properly: Keep in a dry, ventilated environment to prevent rust.
| Test Parameter | Result (BU14) | Result (BU24) |
|---|---|---|
| Torque Strength | 35 N·m | 45 N·m |
| Burst Pressure | 10 bar | 12 bar |
| Vibration Test | Passed (No leakage after 100 hrs) | Passed (No leakage after 200 hrs) |
| Corrosion Test (Salt Spray 72 hrs) | No visible rust | No visible rust |
Each OMEJA Boss Clamp undergoes a multi-stage quality assurance program:
Dimensional verification by CNC measurement
Torque resistance testing
Pressure and leakage test
Surface coating adhesion inspection
Final visual inspection for casting defects
These steps ensure every clamp meets ISO and international safety standards.
Q1. What material is used in Boss Clamp BU14 and BU24?
Both models are made of ductile iron, providing strength, elasticity, and resistance to impact.
Q2. What type of bolts are used?
Bolts are typically zinc-plated steel or stainless steel for corrosion resistance.
Q3. Can these clamps be reused?
Yes. As long as the bolts and body remain in good condition, both BU14 and BU24 clamps can be reused multiple times.
Q4. Are they suitable for high-vibration applications?
Yes. The BU24 model, in particular, is designed for heavy vibration and fluctuating pressure systems.
Q5. Do these clamps fit standard hose sizes?
Yes. They are compatible with international standard hose outer diameters and fittings.
A mining operation in Inner Mongolia replaced traditional steel hose clamps with OMEJA BU24 Boss Clamps on their slurry pipelines. After six months of continuous operation under 12-bar pressure, the clamps maintained full sealing integrity, reducing maintenance time by 40% and extending hose lifespan by 30%.
This demonstrates the durability and reliability of ductile iron clamps in harsh working environments.
The Boss Clamp BU14 and Boss Clamp BU24 are essential components in modern industrial piping and hose systems. Their ductile iron construction, double-bolt design, and high clamping torque make them reliable for both medium and high-pressure applications.
Whether used in mining, agriculture, construction, or chemical transport, these clamps deliver consistent sealing performance and long operational life.
For professional consultation or technical specifications, contact:
OMEJA
Phone: +86-15243599988
Email: whp@omj-casting.com
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