At DuckBillValveFactory.com, our ISO13485 certification and 17 years of specialized manufacturing experience underscore our commitment to delivering precision fluid control components that meet the highest standards of quality and regulatory compliance. The JT1170 exemplifies this dedication—a precision-engineered duckbill check valve offered in a comprehensive range of elastomers to suit applications from medical devices to aggressive chemical processing. With its medical-grade silicone option certified to RoHS 2.0 standards and a full suite of alternative materials, the JT1170 provides engineers with a versatile, reliable, and compliant backflow prevention solution.
JT1170 DuckBill Valve Product Specifications: Precision Dimensions for Demanding Systems
The JT1170 is precision-molded to exacting tolerances, with dimensions optimized for secure integration into a wide range of device configurations. Detailed professional CAD technical drawings are available upon request for engineering validation:
- Model Number: JT1170
- Standard Material: Medical-Grade Silicone (SR55-118 formulation)
- Optional Materials: EPDM, NBR, FKM, FVMQ (Custom formulations available)
- Hardness: 55 Shore A (Standard; customizable across material options)
- Standard Color: Red (Silicone); Black (EPDM, NBR, FKM)
- Regulatory Compliance: RoHS 2.0 compliant (Silicone standard)
Critical Dimensions:
- Base Sealing Diameter: 12.51 mm (0.493 inches)
- Outer Diameter: 9.92 mm (0.391 inches)
- Inner Diameter: 7.95 mm (0.313 inches)
- Height: 11.0 mm (0.433 inches)
(Note: Slit configuration and material-specific dimensions may vary; refer to technical drawings)
Core Performance Advantages: The JT1170 Duckbill Design Delivers Reliability
The duckbill check valve design—a one-piece elastomeric component with a slit at the tip—provides inherently reliable backflow prevention across all material options. The JT1170 maximizes these advantages through its optimized geometry and material versatility:
- Position-Independent Operation: The valve functions reliably regardless of mounting orientation, providing exceptional design flexibility in complex assemblies.
- Optimized Cracking Pressure: With a silicone hardness of 55 Shore A, the JT1170 delivers a moderate and consistent cracking pressure—typically between 2 and 5 psi—ensuring reliable flow initiation while maintaining a positive seal against backflow. Alternative materials can be formulated to achieve higher or lower cracking pressures as required .
- Bubble-Tight Sealing: Any reverse pressure causes the elastomeric lips to collapse instantly, creating a positive, leak-proof seal that prevents backflow and maintains system integrity .
- Superior Particle Tolerance: The absence of mechanical springs or moving parts makes the JT1170 highly tolerant of particulates and debris, reducing clogging risks and maintenance requirements—a critical advantage over traditional spring-loaded check valves in applications where sediment is present .
- Maintenance-Free Operation: With no moving components to wear, corrode, or fail, the JT1170 provides years of trouble-free service without the need for regular inspection, lubrication, or replacement.
Material Selection Guide: Choosing the Right Elastomer for Your Application
The JT1170 is available in a comprehensive range of high-performance elastomers, allowing engineers to match the valve material precisely to the media and environmental conditions of their application :
Medical-Grade Silicone (SIL/VMQ) – Standard Option
- Key Properties: Excellent biocompatibility, extreme temperature resistance (-50°C to +200°C), transparency option available, FDA-compliant for food contact, ISO10993 certified for medical use, RoHS 2.0 compliant .
- Primary Applications: Medical devices, infusion pumps, breast pumps, enteral feeding systems, food and beverage dispensing, pharmaceutical processing.
- Best For: Applications requiring biocompatibility, patient contact, high purity standards, or regulatory compliance for medical and food contact.
EPDM (Ethylene Propylene Diene Monomer)
- Key Properties: Exceptional weather and ozone resistance, excellent water and steam compatibility, broad chemical resistance (ketones, hot water, alkalis, phosphate esters). EPDM is also a common choice for wastewater applications .
- Primary Applications: Wastewater treatment, stormwater management, outdoor installations, industrial process water, irrigation systems .
- Best For: Outdoor exposure, aqueous media, wastewater, and applications where weathering resistance is critical.
NBR (Nitrile/Buna-N)
- Key Properties: Excellent resistance to petroleum-based oils, fuels, and greases; good abrasion resistance and tensile strength .
- Primary Applications: Automotive fuel lines, oil handling systems, hydraulic equipment, industrial lubrication circuits.
- Best For: Hydrocarbon-based media and applications requiring oil resistance .
FKM (Fluoroelastomer/Viton™ Equivalent)
- Key Properties: Superior chemical resistance to aggressive fluids (solvents, strong acids, halogenated hydrocarbons), exceptional high-temperature performance (up to +200°C), low gas permeability .
- Primary Applications: Chemical processing, aerospace fuel systems, aggressive solvent handling, high-temperature industrial processes.
- Best For: Harsh chemical environments and extreme temperature conditions where other elastomers would degrade .
FVMQ (Fluorosilicone)
- Key Properties: Combines the temperature resistance of silicone with the fuel and oil resistance of FKM; excellent performance in aerospace and automotive applications.
- Primary Applications: Aerospace fuel systems, automotive emission control, high-performance industrial equipment.
- Best For: Applications requiring both broad chemical resistance and extreme temperature tolerance .
Primary Applications Across Industries
The JT1170’s material versatility makes it an ideal solution across a diverse range of industries and applications:
- Medical and Healthcare: In silicone formulation, the JT1170 provides reliable backflow prevention in infusion pumps, drug delivery systems, respiratory therapy devices, and breast pumps. Its RoHS 2.0 compliance and biocompatibility ensure patient safety and regulatory acceptance .
- Wastewater and Municipal Infrastructure: In EPDM formulation, the JT1170 prevents backflow in wastewater treatment plants and stormwater outfalls. Duckbill valves have been proven in these applications since 1984, providing long-term reliability against sediment and debris .
- Chemical and Industrial Processing: In FKM or FVMQ formulation, the JT1170 handles aggressive chemicals, solvents, and high-temperature fluids in processing plants, chemical dosing systems, and industrial equipment .
- Automotive and Transportation: In NBR or FKM formulation, the JT1170 provides reliable one-way flow control in fuel systems, coolant circuits, and emission control systems .
Addressing Common Engineering Questions
Q: What does RoHS 2.0 compliance mean for the JT1170?
A: RoHS 2.0 (Restriction of Hazardous Substances) compliance ensures that the silicone formulation used in the JT1170 is free from restricted hazardous substances such as lead, mercury, cadmium, and certain phthalates. This is essential for medical, food-contact, and many consumer applications where environmental and health safety are paramount .
Q: How does the 55 Shore A hardness affect the JT1170’s performance?
A: The 55 Shore A durometer provides a balanced cracking pressure—higher than ultra-soft 40 Shore A valves, but lower than firmer 70 Shore A valves. This makes the JT1170 ideal for applications that require a positive seal against moderate backpressure while still opening easily under normal forward flow .
Q: What sterilization methods are compatible with the JT1170?
A: Silicone, EPDM, FKM, and FVMQ can all withstand multiple cycles of steam autoclaving (up to 121°C), ethylene oxide (EtO) gas, and gamma irradiation. However, specific sterilization compatibility may vary by material formulation. Please consult our technical team for validation protocols.
Q: Is the JT1170 suitable for high-pressure applications?
A: Duckbill valves are typically used in low to moderate pressure applications, such as gravity-fed systems, municipal outfalls, and medical devices. For high-pressure applications, please consult our engineering team to discuss specific performance capabilities and potential design modifications .
Q: Can the JT1170 be customized for my specific requirements?
A: Yes. As a specialist in OEM/ODM custom solutions, DuckBill Valve Factory can modify the material formulation, adjust critical dimensions, or alter the duckbill geometry to meet your exact specifications. Rapid prototyping services are available to validate designs before full-scale production.
Conclusion
The JT1170 is a versatile, high-performance duckbill check valve that combines precision engineering with comprehensive material selection and regulatory compliance. Whether you require the biocompatibility of RoHS 2.0-certified silicone for medical devices, the weather resistance of EPDM for wastewater systems, or the chemical tolerance of FKM for industrial processing, the JT1170 delivers reliable, maintenance-free backflow prevention. Backed by DuckBill Valve Factory’s ISO13485-certified quality systems and 17 years of specialized manufacturing expertise, the JT1170 offers the performance, durability, and material flexibility that demanding applications across industries require.
