Umbrella Check Valves for Efficient Fluid Control
Product Number: V013020700
Umbrella valves are single-component, in-line, one-way check valves that function effectively when paired with a flat seat. These valves are normally closed and are ideal for applications requiring a precisely defined low opening pressure. They offer excellent resistance to backflow leakage. By combining the valve with an appropriately designed seat, the balance between forward flow and reverse pressure resistance can be optimized.
Materials of Construction
- Part Number: V013020700
- Product Group: Umbrella
- Material Number: VL1714M1
- Material Type: EDPM
- Material Color: Black
- Material Advantage: WRC Certified
- Media Resistance - Water: Excellent
- Media Resistance - Fuel: Poor
- Media Resistance - Oil: Poor
- Tg (DSC): -45°C
- Tmax (Continuous): 130°C
Design Characteristics
Function
This is a large, thin-sectioned, pull-in umbrella from a low cost material for general use, especially with air and water.
- Cracking Pressure: Push
Working Principle
Umbrella valves consists of a dome shaped elastic valve body which provides a sealing function in the backflow direction when mounted in a seat. Opening pressure is determined by the amount preload applied to the valve body and by the skirt design. Forward flow is a function of pressure differential over the flow path cross sections and the skirt design.
Mounting Instructions
Umbrella valves can be mounted in any position. Mounting is easy and this design is pull in but push-in and other mounting designs are also available. If desired the excess stem length can be cut off after assembly. For proper functioning the umbrella OD should have clearance with the housing assembly so as not to restrict flow.
Photo/Rendering
Technical Drawing
Performance Characteristics
Opening Pressure
Diagram
Definition
Opening Pressure is the differential pressure required for the valve to allow forward flow that meets the specified flow threshold. As the flow threshold increases, the Opening Pressure will also increase. Conversely, reducing the flow threshold will result in a lower Opening Pressure. Water test data is available upon request.
Reverse Leakage
Diagram
Definition
Leakage, or reverse flow, is measured by gradually increasing the backpressure across the valve, starting from zero. Please note that the leakage graph uses a different scale compared to the flow graphs. Water test data is available upon request.
Forward Flow
Diagram
Definition
Flow and differential pressure are measured simultaneously as the inlet pressure increases from zero. Once the maximum flow is reached, the pressure is gradually reduced back to zero, with flow and differential pressure measured throughout the process. The chart displays the minimum and maximum flow values recorded during tests of multiple samples at each pressure level. Water test data is available upon request.
Vernay Quality Policy
Vernay is committed to the highest level of quality and service to our customers. We focus on innovation and continuous improvement in all areas of our business and accomplish these goals through our quality management system. Maintain our existing quality certifications (ISO/IATF-16949, ISO 9001, and ISO 13485).