Hydraulic systems often face vibration, pulsation, and oil corrosion problems. Without the right connector, pipelines may leak, and pumps may fail. The K16S oil-resistant expansion joint is designed specifically for hydraulic suction ports, ensuring durability, reliability, and long service life.
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The K16S oil-resistant expansion joint is specially designed for hydraulic suction lines. It resists oil corrosion, absorbs vibration, and ensures safe and stable operation of pumps and pipelines.
What is the K16S Oil-Resistant Expansion Joint?
The K16S expansion joint is made of nitrile-based oil-resistant rubber, reinforced with fabric layers and combined with steel flanges or threaded ends. It can withstand negative pressure, maintain elasticity, and provide excellent sealing in hydraulic systems.
Why Do Hydraulic Suction Ports Need Expansion Joints?
Suction lines in hydraulic systems are prone to vibration, pulsation, and resonance. Without protection, pumps and pipes may suffer from leaks or fatigue. K16S joints help to:
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Absorb vibration and noise from pumps.
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Reduce pulsation and resonance in suction lines.
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Prevent flange surface leakage caused by vibration.
What Are the Advantages of K16S Expansion Joints?
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Superior oil resistance – designed for continuous contact with hydraulic oil.
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Vibration and noise reduction – prevents vibration transfer from pumps to pipelines.
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Flexible compensation – absorbs misalignment and thermal expansion.
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Extended lifespan – service life of 5–10 years under normal conditions.
How Is K16S Different from Standard Rubber Joints?
Ordinary rubber joints tend to swell, crack, or harden when exposed to oil. The K16S is engineered with a special oil-resistant compound that ensures long-term flexibility and stability, making it safer and more reliable for hydraulic suction systems.
What Should Be Considered During Installation?
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Align flanges correctly to avoid twisting or stretching.
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Tighten bolts evenly in a crisscross pattern for better sealing.
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For strong suction conditions, add a vacuum support ring to prevent collapse.
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Conduct regular inspections for wear, oil leakage, or surface aging.
Where Can K16S Expansion Joints Be Applied?
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Hydraulic pump suction ports
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Machine tool hydraulic systems
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Injection molding and die casting machines
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Forging and pressing equipment
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Lubrication oil pipelines
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Power plant and steel plant hydraulic systems
Frequently Asked Questions (FAQ)
1. What is the pressure rating of the K16S joint?
It is mainly designed for suction or low-pressure conditions, not for high-pressure discharge lines.
2. How long does the K16S expansion joint last?
Typically 5–10 years, depending on operating conditions and maintenance.
3. Can K16S replace a metal hose?
Yes, for hydraulic suction lines K16S offers better flexibility, vibration isolation, and easier installation compared with metal hoses.
4. Does K16S require additional gaskets?
Its sealing surface is integrated, usually no extra gasket is needed. For strict sealing, an oil-resistant gasket can be added.
5. Can it be used with other media besides hydraulic oil?
Yes, it can also be used with lubrication oil, diesel, and fuel oil. However, it is not recommended for strong acids or alkalis.
Summary:
The K16S oil-resistant expansion joint is the ideal choice for hydraulic suction pipelines, providing superior oil resistance, vibration absorption, and long-lasting durability.
