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Duckbill valves are unique, one-piece, elastomeric components that act as backflow prevention devices or one-way valves. They feature elastomeric lips shaped like a duckbill, which prevent backflow and allow forward flow.
The main advantage of duckbill valves over other types of one-way valves is that they are self-contained, meaning the critical sealing function is an integral part of the one-piece elastomeric component, unlike valves that require a sealing element to engage with a smooth seat surface to form a seal.
Therefore, duckbill valves are easily incorporated into a wide range of devices without the hassle or problems associated with the surface finish quality of mating seats and/or complex assembly processes.
Other important features include:
1) Position independent,
2) Low opening pressure - immediate free flow,
3) Non-tortuous flow path,
4) High flow rate vs. package size,
5) Virtually no internal volume and dead space,
6) Particle compliant,
7) Corrosion resistant,
8) Wear resistant and
9) Very cost effective.
One-way valves are used for controlling the direction of fluid flow. Designs can include umbrella valves, duckbill valves, Belleville valves, and diaphragm valves, among others.
One-way valves can be designed to meet specific head loss and flow rate requirements for various applications.
A wide range of materials and designs are available to handle different fluids and service conditions.
Silicone Duckbill Valve, commonly used in Patient Valves for Manual Resuscitators.
Silicone Duckbill Valve
Materials
Silicone, LSR (Liquid Silicone Rubber)
Material Demands
Medical/Food Standards
Material Certification
FDA, LFGB, ROHS, SGS etc.
Working Temperature
-40oC - 230oC
Durometer/Hardness
30-90 Shore A
Opening Ways
Die Cutting (punching) or Crash Cutting
Color
Available
Production Environment
Clean Room
Packing Requirement
Air in packaging bag to prevent deformation
Our Advantage:
1. Own Precision Mold Tooling Making Technology (Since 1998)
2. Competitive Price: Origin Manufacturer.
  1.) Four Production Plants: Mold Tooling Making Plant; Silicone Rubber Compression Plant; Plastic Injection Plant; Liquid Silicone Rubber Injection Plant (in 100,000 grade Clean Room);
  2.) One 100,000 Grade Clean Room Assembly Plant.
3. Five Experienced Technical Persons: Offer technology/production/design/artwork support etc.
4. Production and Test Strictly According to ISO9001:2008.  Test Equipment: 3D Projectors, Sealing Tester, Elasticity Measurement, Durometer etc.
5. Dust-free Environment:
 LSR Injection Machines, Assembly Line in 100,000 rating Dust-free Plants.
6. Fast Reaction:
Xiamen Better Silicone Co., Ltd is your partner in the development, manufacturing, and worldwide distribution of miniature, self-actuating valves and elastomeric valve components for innovative products. Particularly one-way valves and pressure relief valves such as duckbill valves and umbrella valves, dispensing valves, and access valves.
We supply to Original Equipment Manufacturers (OEMs) in the healthcare, automotive, appliance, water handling, and food and packaging industries.
Products Development
Our technical department develops miniature fluid control components for both our catalog and for your specific custom requirements:
1. Precision Own Mold-Making Technology since 1998.
2. In-depth knowledge of silicone rubber compression production.
3. Mature experience in avoiding shape deformation and damage from production to shipment: Material selection, design improvement, and packing information.
4. In-depth knowledge of fluid control technology.
5. In-depth knowledge of elastomer as an engineering material.
6. Rapid prototyping with full-sized production equipment and materials (Liquid Silicone Injection Machines, Silicone Rubber Compressive Machines).
7. Experienced clean room and precision manufacturing technology.
Manufacturing
Our main manufacturing processes are: Precision Mold-Making, Silicone Rubber Compressive Production, Liquid Silicone Rubber (LSR) Injection Production, Plastic Injection Production, and Assembly.
Most processes (except mold-making) are conducted in a clean room environment.
Model NO.: SMV2
Color: Available
Weight: 2.2g
Status: For Sale
Working Temperature: -40°C to 230°C
Usage: For Medical Devices Valves
Trademark: Better
Transport Package: Poly Bags, Carton Boxes
Specification: CE, ROHS, FDA
Origin: Xiamen, China
HS Code: 3926901000
Pressure Resistance Control Silicone Rubber Air Valve