At DuckBillValveFactory.com, our ISO13485 certification and 17 years of specialized manufacturing experience allow us to engineer duckbill check valves that meet the exacting demands of medical, food, and industrial fluid control systems. The JT1155 represents a thoughtfully optimized design: a red, medical-grade silicone valve with balanced dimensions and a carefully selected hardness range that delivers reliable sealing, moderate cracking pressure, and exceptional durability. This model is ideally suited for applications requiring visual identification, biocompatibility, and consistent one-way flow control in space-constrained assemblies.
Product Specifications: Precision Dimensions for Versatile Integration
The JT1155 is engineered to provide a secure, leak-proof fit across a broad range of device configurations. Its dimensions, detailed in the accompanying technical drawings, offer an optimal balance between flow capacity and compact footprint:
- Model Number: JT1155
- Material: Medical-Grade Silicone (Proprietary Formulation)
- Hardness: 50–60 Shore A
- Color: Red (High visibility for quality assurance and easy identification)
- Critical Dimensions:
- Base Sealing Diameter: 5.0 mm
- Outer Diameter: 4.3 mm
- Height: 10.0 mm
- (Note: Inner diameter and slit configuration are application-specific; refer to technical drawings)
Core Performance Advantages
The JT1155 leverages the inherent benefits of the duckbill valve design—a simple, one-piece elastomeric component that acts as a backflow prevention device. Its key performance attributes include:
- Position-Independent Operation: The valve functions reliably regardless of mounting orientation, providing design flexibility in complex assemblies.
- Low Cracking Pressure: With a hardness range of 50–60 Shore A and high-elastic silicone construction, the JT1155 opens under minimal forward pressure—typically within the 0.5–5 psi range—ensuring immediate free flow without system strain.
- Bubble-Tight Seal: Any reverse pressure causes the elastomeric lips to collapse instantly, creating a positive, leak-proof seal that prevents backflow and maintains system integrity.
- Particle Compliance: The absence of mechanical springs or moving parts makes the JT1155 highly tolerant of particulates, reducing clogging risks in real-world applications.
- Minimal Dead Volume: The design produces virtually no internal dead space, preserving fluid purity and reducing waste—a critical consideration in medical and pharmaceutical applications.
- Durability: Excellent resistance to fatigue, compression set, and repeated cycling ensures long service life even under frequent use.
Material Excellence: Medical-Grade Silicone
The JT1155 is manufactured from high-quality, medical-grade silicone rubber, processed via precision injection or compression molding to achieve tight tolerances and consistent quality. This material selection offers several distinct advantages:
- Exceptional Biocompatibility: The silicone formulation meets ISO10993 standards for cytotoxicity, sensitization, and irritation, making it safe for direct contact with blood, parenteral fluids, and other biological media.
- FDA Compliance: The material is FDA-compliant for repeated food contact, enabling safe use in food and beverage dispensing applications.
- Wide Temperature Tolerance: The JT1155 maintains its flexibility and sealing properties across a broad temperature range, typically from -50°C to +200°C, ensuring reliable performance in thermally variable environments.
- Sterilization Compatibility: The valve can withstand multiple cycles of steam autoclaving (up to 121°C), ethylene oxide (EtO) gas, and gamma irradiation without degradation of its red color or sealing properties.
- Chemical Inertness: Silicone is resistant to many chemicals and does not leach plasticizers or additives, ensuring the purity of fluids passing through the valve.
Primary Applications
The combination of red coloration, medical-grade silicone, and balanced hardness makes the JT1155 an excellent choice for a diverse range of applications:
- Medical Infusion and Drug Delivery Systems: In gravity-fed IV sets, elastomeric pumps, and ambulatory infusion devices, the JT1155 provides reliable backflow prevention. Its red color allows clinicians and patients to easily locate the valve within the fluid path, while the medical-grade material ensures compatibility with common intravenous solutions and medications.
- Breast Pump Components: Red silicone duckbill valves are widely used in breast pump systems as a visual indicator of proper assembly and function. The JT1155’s 50–60 Shore A hardness delivers a consistent vacuum seal for efficient milk expression, while its biocompatibility ensures safety for infant feeding.
- Food and Beverage Dispensing: The JT1155 is FDA-compliant for repeated food contact. Its red color provides excellent contrast against clear or white housings, making it easy to inspect for cleanliness and proper seating. It is ideal for coffee machines, juice dispensers, and automated beverage systems.
- Diagnostic and Laboratory Equipment: In clinical chemistry analyzers and point-of-care devices, the JT1155 serves as a reliable one-way valve for reagents and samples. Its red color aids in visual identification during assembly and maintenance, reducing the risk of incorrect valve placement.
- Wastewater Treatment Systems: The durable construction effectively prevents backflow in compact wastewater systems, ensuring environmental compliance and operational efficiency.
Addressing Common Engineering Questions
Q: How does the JT1155 compare to softer silicone duckbill valves?
A: The JT1155’s 50–60 Shore A hardness provides a moderate and consistent cracking pressure, making it more resistant to accidental backflow under low reverse pressure than ultra-soft valves (e.g., 40 Shore A). This makes it ideal for applications where a positive shut-off is more critical than minimal flow resistance.
Q: What sterilization methods are compatible with the JT1155?
A: The JT1155 can withstand repeated cycles of steam autoclaving (up to 121°C), ethylene oxide (EtO) gas, and gamma irradiation up to 50 kGy. It maintains its red color, flexibility, and sealing properties through all common medical sterilization processes.
Q: Is the JT1155 suitable for use with aggressive chemicals or oils?
A: Silicone is generally not recommended for prolonged contact with hydrocarbon-based fluids (oils, fuels) or concentrated mineral acids. For such aggressive media, DuckBill Valve Factory offers FKM-based models with superior chemical resistance.
Q: Can the JT1155 be customized for specific cracking pressure requirements?
A: Yes. As a specialist in OEM/ODM custom solutions, DuckBill Valve Factory can adjust the silicone formulation to modify the durometer (hardness) by 5–10 Shore A in either direction, thereby fine-tuning the cracking pressure to your exact specifications. The bill lip thickness and geometry can also be altered to achieve specific flow characteristics.
Q: Why is the valve red?
A: The red color serves multiple purposes: it provides high visual contrast against white or clear medical housings for easy assembly inspection; it allows for quick identification of the valve type in multi-valve manifolds; and it acts as a quality indicator, confirming that the correct material formulation has been used.
Q: Is the JT1155 available for high-volume production?
A: Yes. DuckBill Valve Factory offers both prototyping and large-scale production capabilities, with ISO13485-certified quality control processes ensuring dimensional accuracy and performance consistency across every batch.
Conclusion
The JT1155 is a thoughtfully engineered duckbill check valve that combines the proven benefits of medical-grade silicone with enhanced durability, color visibility, and consistent sealing performance. For designers and engineers developing medical devices, food processing equipment, diagnostic instruments, or compact fluid control systems, the JT1155 offers a reliable, biocompatible, and visually identifiable solution backed by ISO13485-certified quality systems and decades of manufacturing expertise. Whether used in infusion pumps, breast pumps, beverage dispensers, or analytical instrumentation, this valve delivers the balanced performance that demanding applications require.
