Xiamen Better Silicone Rubber Co., Ltd
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Medical Umbrella Valve
Medical Umbrella Valve, also known as Umbrella Check Valve and One Way Valve, is made of flexible materials like silicone, liquid silicone, nitrile (NBR), HNBR neoprene, EPDM, FKM, FVMQ (fluorosilicone) etc. Medical Umbrella Valve is designed for healthcare applications, utilizing a flexible elastomeric diaphragm (typically silicone) to regulate unidirectional flow of gases or liquids while preventing backflow contamination.
Medical Umbrella Valve Structure & Working Principle
(1) Basic Structure
Umbrella Diaphragm: Made of flexible material, thicker at the center and thinner at the edges, resembling an umbrella.
Valve Seat: Usually a rigid structure (plastic or metal) with a flow hole.
Retainer (Optional): Used to secure the umbrella diaphragm and prevent excessive deformation.
Forward Flow (Open): When fluid pressure acts beneath the valve disc, the umbrella diaphragm lifts, allowing fluid to pass through the valve seat.
Reverse Flow (Closed): When pressure drops or reverses, the elastic valve disc returns to its original position, sealing against the valve seat to prevent backflow.
Medical Umbrella Valve Common Materials
A. Respiratory Therapy
Ventilators: Prevents CO₂ rebreathing in expiratory circuits
CPAP/BiPAP: Maintains positive airway pressure during exhalation
Nebulizers: Controls aerosolized medication delivery
B. Fluid Management
Infusion Pumps: Ensures precise IV flow direction (ISO 28620)
Dialysis Machines: Prevents blood backflow in extracorporeal circuits
Laparoscopic Insufflators: Regulates CO₂ flow during surgery
C. Diagnostic Equipment
Blood Analyzers: Prevents cross-contamination between samples
Anesthesia Machines: Manages gas mixing circuits
Parameter | Description |
|---|---|
| Disc Diameter | Determines flow rate and sealing area |
| Cracking Pressure | Typically 0.1~5 psi (depends on material thickness) |
| Temperature Range | Silicone: up to 200°C; standard rubber: ~120°C |
| Fluid Compatibility | Must match fluid type (oil, acid, water, etc.) |
| Cycle Life | Generally exceeds 1 million cycles |
Diameter 20MM Umbrella Valve.pdfDiameter 24MM Umbrella Valve.pdfDiameter 31MM Umbrella Valve.pdfDiameter 32.5MM Umbrella Valve.pdfDiameter 34MM Umbrella Valve.pdf
Our Company Advantages for Medical Umbrella Valves Production
Xiamen Better Silicone Company is specialized in making rubber compression mold & liquid silicone rubber injection mold and producing different types of air & liquid controller umbrella valves.
1. Precision Own Mold-Making Technology since 1998,one stop service for silicone rubber compression molded components, plastic injection molded and liquid silicone rubber molding components.
2. In-depth knowledge of elastomeric materials molded
3. In-depth knowledge of fluid control technology.
4. Mature Experience of avoiding out of shape and damage from Production to Shipment: Materials Choice, Design Improvement and Packing Information.
5. Rapid prototyping with full sizes production equipment and production materials.
6. Experienced clean rom and precision manufacturing technology.
