FKM Umbrella Valve

Fluorocarbon Rubber (FKM, FPM, Viton) Umbrella Valves and Fluorosilicone (FVMQ, FSR) Check Valves are fluoro elastomer valves that have a mushroom shape. FKM umbrella valves can be used as sealing elements to prevent backflow in one-way valves and check valves, and they offer excellent oil resistance, high-temperature tolerance, and chemical stability, making them widely applicable in automotive fuel systems.

Fluorosilicone Rubber(FVMQ) Data Sheet.pdfFluorosilicone (Liquid Silicone Rubber) Data Sheet.pdfFluorocarbon Rubber(FKMFPM）Data Sheet.pdf

FKM Umbrella Valve Structure

Mushroom Shaped Diameter: bigger than one-way valve holes

Hook Height: same to plastic & metal panel's height

Stem Diameter: same or maller than assembly holes

Outside Diaphragmatic Surface: EDM process or texture surface for dust proof

Inside Diaphragmatic Ring Edge Surface: Polish or high-polishing for sealing function

FKM Umbrella Valve Design Guide

FPM & FKM valve seal usually has undercut design structure, which should be made of material with high tensile elastic manuafctured by three-plate mold for avoiding damage when ejected valve from mold. But FPM & Fluorosilicone (FVMQ) material don't have so excellent high tensile property compared with Silicone Rubber material. When we design the valve, we usually make larger radius around the undercut for helping easier demoulding.

FKM Umbrella Valve Working Principle

Forward Flow: Fluid/Air pressure lifts the disc off the seat, allowing flow.

Reverse Flow: When pressure drops or reverses,the disc returns via gravity or spring force, sealing against the seat

                         to prevent backflow.

FKM Umbrella Valve Manufacturing Process

Key Applications of FKM Umbrella Valves

1. Automotive & Fuel Systems

   - Used in fuel pumps, fuel injectors, and emission control systems to prevent backflow and maintain pressure.

   - Resistant to gasoline, diesel, biofuels, and oil.

2. Industrial & Hydraulic Systems

   - Found in hydraulic pumps, compressors, and fluid power systems to ensure unidirectional flow.

   - Resists aggressive hydraulic fluids, lubricants, and solvents.

3. Medical & Pharmaceutical Equipment

   - Used in pumps, ventilators, and fluid dispensers where chemical resistance is critical.

   - Compatible with sterilization methods (autoclaving, gamma radiation).

Umbrella Valves in Stock

Why Choose Us?

1. Decades of experience about precision silicone rubber molding production.

2. We can offer high precises designs and sizes for silicone rubber valves to support your devices according to your                3D/2D drawings,samples, flowing parameters etc.

3. We have Dust-Free Silicone Rubber Compression Molding Plants and Dust-Free Dismantling Plants. 

4. According to customer demands, most of silicone medical parts should be produced and finished in clean room.Our            dust-free plants can up to 100,000 stage.