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Duckbill check valves are of one-piece that keeps flow going in one direction and prevents backflow. They have elastomeric lips in the shape of a duckbill which allows this forward flow. The main advantage of duckbill check valves over other types of one-way valves is that duckbill check valves are self contained. Duckbill check valves allow free flow with positive differential pressure. With negative differential pressure, backflow is checked.
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Duckbill type check valve
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Non-venting
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Extremely low crack pressures
- Direct in-line mounting
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Control flow direction in medical equipment,
instrumentation systems, and in miniature
pneumatic control systems
Specifications:
Fluid: Compressed air, inert gases, nonflammable and nontoxic chemical solutions (must be compatible with materials of construction - consult factory if in doubt).
Maximum Pressure: 30 psig (2.1 bar)
Temperature Range: 35° to 150°F (2° to 66°C)
Maximum Reverse Air Flow at Indicated Pressure Differential
4LD-052 & 4LD-063: 0.05 scim @ 2" H2O (@ 1 bubble every 2 seconds)
All other listed models: 6 scim @ 8.3" H2O |
