This is a duckbill valve seal designed for fire-fighting equipment pumps and valves. It is fabricated from EPDM. It presents a "spool-shaped" integrated rubber component. It features a hollow cylindrical structure with flanges at both ends. Some models are equipped with a straight flow guide incision at the top. This forms a duckbill-shaped opening. Its hardness is 80±5°. The duckbill valve offers excellent structural support. It can be embedded into the pressure relief interface of fire-fighting pump valves.As a critical safety component for fluid control systems, it complies with the rigorous standards of Mini Sealed Valve and Sealed Fluid Direction Control Valve. It is fully compatible with the application requirements of Sealed Diaphragm Pump and Sealed Fluid Transfer Pump.
Product Features
1. Functions
1)One-Way Pressure Relief for Fire-Fighting Pump Valves:It serves as a pressure protection component for pump valves. It achieves one-way conduction through its duckbill structure. When the internal pressure of the pump valve exceeds the safety threshold, the duckbill mouth automatically opens under pressure to release high pressure. When the pressure drops, the elasticity of the high-hardness EPDM allows the duckbill mouth to automatically close. It prevents medium backflow. It ensures pressure stability and operational safety of fire-fighting pump valves. This pressure relief performance meets the stringent demands of Check and Non-Return Valves and One-Way Flow Valves for safety systems.
2)Pump Valve Interface Sealing & Leak Prevention:The flanges at both ends fit tightly against the pump valve mounting groove. It fills gaps to block the leakage of media such as fire water and foam liquid. It prevents external impurities from invading the pump valve interior. It protects precision components.
3)Adaptation to High-Pressure and High-Frequency Working Conditions:The high-hardness material can withstand high-pressure impacts and high-frequency actions of fire-fighting pump valves. It maintains structural stability during repeated release-closing cycles. It avoids deformation failure.
2. Performance Characteristics
1)EPDM Material + 80±5° High Hardness for Fire-Fighting Conditions:EPDM boasts excellent weather resistance, ozone resistance and chemical resistance (compatible with media such as fire water and foam liquid). It has excellent flame retardant properties. The 80±5° high hardness setting not only ensures the rigid support force of the duckbill mouth. It prevents poor closing caused by high-pressure deformation. It retains sufficient elasticity to achieve rapid opening/closing and sealing fit. This performance advantage aligns with the technical specifications of Micro Sealed Hydraulic Pump and heavy-duty fluid control components.
2)Spool-Shaped Flange + Straight Flow Guide Incision Enhances Relief Efficiency:The flange structure at both ends enhances the fitting stability with the pump valve. It prevents displacement under high pressure. The straight flow guide incision design at the top can guide the uniform release of media. It improves the response speed and efficiency of pressure relief. This structural design complies with the matching standards of Directional Control Valves and integrated fluid systems.
3)Impact Resistance and Fatigue Resistance Ensure Long-Term Reliability:The high-hardness EPDM material can withstand high-frequency and high-pressure impacts of fire-fighting pump valves. It is not prone to fatigue deformation or elastic attenuation after long-term use. It ensures the long-term reliability and service life of the seal.
3. Application Scenarios
1)Fire-Fighting Water Pump Systems:It is suitable for pressure relief valves of main fire pumps and standby pumps. It is used to protect pump bodies and pipelines from overpressure damage. It is a key component for the safety of Sealed Fluid Transfer Pump systems in fire-fighting applications.
2)Foam Fire Extinguishing Equipment:It is applicable for pump valve sealing in foam proportioning devices. It ensures pressure stability and leak prevention in foam liquid delivery. It meets the durability requirements of Mini Sealed Valve components in chemical fire suppression systems.
3)Fire-Fighting Pipeline Systems:It is used for pressure relief valves in fire monitors and sprinkler systems. It prevents pipeline rupture due to overpressure. It improves fire-fighting system safety. It complies with the quality standards of Sealed Diaphragm Pump auxiliary safety parts.
4. Pain Point Solutions
1)Solving Pump Valve Overpressure Damage Risk:Ordinary pressure relief valve seals have insufficient hardness. They easily lead to untimely release or poor closing due to high-pressure deformation. The high-hardness EPDM duckbill valve can respond precisely to pressure changes. It ensures pump valve safety. It optimizes the performance of Reverse Prevention Valves in high-pressure scenarios.
2)Resolving Fire-Fighting Medium Leakage Problems:Ordinary rubber seals have poor medium resistance. They are prone to swelling failure leading to leakage. The chemical resistance of EPDM is compatible with fire water and foam liquid. It blocks leakage risks. It enhances the reliability of Fluid Check Mechanisms in corrosive media.
3)Addressing Fatigue Failure Under High-Frequency Actions:Fire-fighting pump valves operate at high frequency. Low-hardness seals are prone to fatigue deformation. The fatigue resistance of high-hardness EPDM can extend the service life of seals. It reduces maintenance costs. It improves the durability of Sealed Fluid Direction Control Valve components.
4)Solving One-Way Sealing and Backflow Problems:Ordinary pressure relief valves struggle to balance one-way conduction and backflow prevention. The duckbill structure can achieve strict one-way control. It prevents medium backflow. It improves pump valve efficiency. It fully meets the operational requirements of Reverse Prevention Valves and Fluid Check Mechanisms.
