LYHY Quick-Connect Pipe Fitting MGL4060

Product Overview

The quick-connect pipe fitting is a core component in pneumatic systems, specifically designed for rapidly connecting PU/PE/PA pneumatic hoses to valve bodies, cylinders, and air supply lines. It utilizes a mechanical snap-lock mechanism to enable tool-free, quick hose connection and disconnection, ensuring convenient and efficient operation. The product features a nickel-plated brass body as its main material, equipped internally with stainless steel retaining rings and NBR nitrile rubber sealing rings. For certain special applications requiring high temperature and oil resistance, an FKM fluororubber sealing version is available. With a dual-seal structure, it effectively ensures the airtightness and stability of the air circuit. The product has a rated working pressure of 0–1.0 MPa, and all finished products undergo 100% airtightness pressure testing, with a burst pressure ≥ 4 times the working pressure. Its standard insertion/extraction life exceeds 5,000 cycles, and it operates within a temperature range of –20°C to 80°C, making it suitable for the vast majority of pneumatic circuit requirements. It is widely used in pneumatic systems across various fields, including automation equipment, textile machinery, packaging equipment, and construction machinery.

Core Structure and Technical Principles

The core structure of the quick-connect pipe fitting consists of three key components: a nickel-plated brass body, a stainless steel retaining ring, and an O-ring seal. When a pneumatic hose is inserted into the fitting, the stainless steel retaining ring automatically clamps onto the outer wall of the hose, achieving rapid locking. Simultaneously, the internal O-ring tightly seals between the hose and the inner wall of the fitting, forming a dual-seal structure that effectively prevents air leakage. To remove the hose, simply press the unlocking mechanism at the end of the fitting, allowing effortless extraction without any tools—making the process simple and fast. This structural design not only ensures secure connections but also enhances ease of assembly and disassembly. Moreover, the dual-seal structure significantly reduces the risk of leaks or hose disconnection caused by equipment vibration, meeting the demands of automated equipment operating continuously over long periods.

Performance Parameters

1. Rated Working Pressure: 0–1.0 MPa
2. Burst Pressure: ≥ 4 times the working pressure
3. Standard Insertion/Extraction Life: ≥ 5,000 cycles
4. Operating Temperature Range: –20°C to 80°C (FKM fluororubber sealed versions can withstand –20°C to +120°C)
5. Compatible Hoses: PU, PE, PA pneumatic hoses
6. Body Material: Nickel-plated Brass
7. Seal Materials: NBR nitrile rubber, FKM fluororubber
8. Thread Specifications: G/R/NPT/M and other major international standards
9. Product Types: Straight, elbow, tee, reducer, partition fittings, and more

Key Advantages

1. Dual-Seal Leak Prevention: Featuring a stainless steel retaining ring combined with an O-ring seal, this design minimizes the risk of leaks or hose disconnection even under vibrating conditions, greatly enhancing air circuit stability.
2. Rigorous Factory-Airtightness Testing: Each fitting undergoes 100% airtightness pressure testing, ensuring strict control over potential leaks from the outset and maintaining consistent product quality.
3. High Safety Margin and Long Service Life: With a burst pressure ≥ 4 times the working pressure and a standard insertion/extraction life exceeding 5,000 cycles, it reduces the frequency of replacements and lowers maintenance costs.
4. Corrosion-Resistant and Durable Materials: The nickel-plated brass body offers excellent oxidation and rust resistance, while optional NBR/FKM sealing materials accommodate diverse temperature and oil mist conditions.
5. Tool-Free, Efficient Installation: Designed for easy hose insertion and removal with a simple press, installation time per joint is reduced from the traditional 60–90 seconds to just 8–15 seconds, boosting overall pipeline assembly efficiency by over 70% and saving labor hours while shortening equipment delivery cycles.
6. Comprehensive Compatibility: Available in straight, elbow, tee, reducer, and partition types, supporting multiple international thread standards such as G/NPT/M, meeting the needs of most pneumatic circuits in automation, packaging, textile, and other industries, while also adapting to equipment from Europe, Southeast Asia, and beyond, minimizing selection mismatches.
7. Vibration-Resistant Design for Continuous Operation: The robust locking mechanism accommodates the vibrations inherent in long-term continuous operation of automated equipment, ensuring stable air circuit performance and reducing downtime risks.
8. Convenient Debugging and Maintenance: The press-to-release design simplifies hose disassembly during production line debugging and equipment maintenance, effectively minimizing losses due to downtime.

Core Value of the Product

1. Enhances Assembly Efficiency and Reduces Labor Costs: The tool-free quick-connect design significantly shortens pipeline assembly time and cuts labor input, helping manufacturers shorten equipment delivery cycles and boost production efficiency.
2. Lowers Energy Consumption and Maintenance Costs: Superior sealing performance reduces system air leaks, lowering energy consumption, while the long service life decreases the frequency of spare part replacements, easing maintenance workload and overall operating costs.
3. Improves Equipment Operational Stability: The dual-seal and vibration-resistant design ensures stable air circuit performance even under continuous operation and vibration, minimizing equipment downtime caused by air circuit failures.
4. Adaptable to Multiple Scenarios and International Markets: With multiple specifications and materials available, it suits various environmental conditions and complies with international thread standards, facilitating equipment exports and overseas market expansion.
5. Ensures Compliance and Quality: Through 100% airtightness testing and stringent material controls, it provides material and testing documentation to meet compliance requirements for food processing, new energy projects, and more.

Target Customer Groups

Non-standard automation equipment manufacturers, packaging machinery producers, textile machinery makers, printing equipment companies, woodworking machinery suppliers, food processing equipment firms, lithium battery/photovoltaic equipment manufacturers, construction machinery component suppliers, pneumatic hardware distributors, production line renovation and old equipment upgrade service providers, pneumatic circuit renovation contractors, and overseas buyers of pneumatic components.

Application Scenarios

Quick-connect pipe fittings are widely used in non-standard automation equipment, packaging machinery, textile and woodworking devices, new energy tooling, assembly lines, and equipment renovation and maintenance projects. They can be connected to various pneumatic components such as cylinders, solenoid valves, pneumatic grippers, and blow-off dust removal circuits, enabling rapid hose connection and disconnection—especially suited for equipment operating continuously under vibration. In projects involving food processing, new energy, and other sectors with strict material and quality requirements, corresponding material and testing documentation can be provided to meet compliance needs. Additionally, in outdoor equipment or workshops with heavy oil contamination, selecting appropriate sealing and body materials ensures stable air circuit performance.

Solutions to Industry Pain Points

1. Addressing Low Assembly Efficiency and High Labor Costs of Traditional Pipe Fittings: The tool-free quick-connect design dramatically reduces single-point installation time, boosts overall assembly efficiency, and saves labor hours.
2. Improving Common Fittings’ Tendency to Leak and Poor Air Circuit Stability: The dual-seal structure combined with the stainless steel retaining ring effectively reduces system air leaks and lowers energy consumption, while the vibration-resistant design adapts to continuous operation, ensuring stable air circuit performance.
3. Solving Frequent Spare Part Replacements and High Maintenance Costs: With a long service life of ≥ 5,000 insertions/extractions, it reduces the frequency of fitting replacements, lightening maintenance workload and overall operating costs.
4. Avoiding Thread Specification Mismatches and Poor Compatibility: Supporting multiple international thread standards such as G/NPT/M, it adapts to equipment from Europe, Southeast Asia, and beyond, minimizing selection errors.
5. Meeting Diverse Material Adaptation Needs: Offering nickel-plated brass, stainless steel, and other body materials, along with NBR and FKM sealing options, it accommodates complex conditions like humidity, salt spray corrosion, high temperatures, and oil mist.

Frequently Asked Questions (FAQ)

Q1: Can quick-connect pipe fittings be used in hydraulic circuits?
A: No, this product is designed exclusively for pneumatic systems and is not suitable for hydraulic circuits or highly corrosive media.
Q2: What’s the difference between the FKM fluororubber sealed version and the NBR nitrile rubber sealed version?
A: The NBR nitrile rubber sealed version operates within a temperature range of –20°C to +60°C, suitable for regular conditions; the FKM fluororubber sealed version covers a wider range of –20°C to +120°C, offering superior heat and oil resistance, ideal for specialized high-temperature and oil-resistant applications.
Q3: Does the product come with material and testing documentation?
A: Yes, material and testing documentation are provided to meet compliance requirements for food processing, new energy projects, and more.
Q4: How long is the insertion/extraction life of the quick-connect pipe fitting?
A: The standard insertion/extraction life exceeds 5,000 cycles, sufficient for long-term use and reducing the need for frequent replacements.
Q5: Which thread specifications does the product support?
A: The product supports multiple international thread standards such as G/R/NPT/M, accommodating the vast majority of pneumatic circuits and equipment from different countries.