Xiamen Better Silicone Rubber Co., Ltd

Hot: Umbrella Valve, Duckbill Valve, Flapper Valve, Silicone Valve & Rubber One Way Valve

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Xiamen Better Silicone Rubber Co,.Ltd
Contact person:
Candice Wu
Email: sales@better-silicone.com


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FKM Fluorosilicone Valve

Fluorocarbon Rubber (FKM, FPM, Viton), Fluorosilicone (FVMQ, FSR) are now usually chosen to make umbrella check valve. FKM/FVMQ umbrella valve is fluoro elastomer valve that has a mushroom shape. With excellent performance, fluorosilicone umbrella seal valve can be used as sealing element to prevent backflow for one-way valves, check valves, in vent valves or pressure relief valves​ and in metering valves.
  • Umbrella Valve

  • BT

  • 3926909090


Fluorosilicone Valve

Why Fluorocarbon Rubber (FKM, FPM, Viton), Fluorosilicone (FVMQ, FSR) are chosen to make check valve?Compared with common silicone rubber material, FKM & FVMQ has excellent oil resistant, organic solvents resistance and petroleum based fluid resistance. FKM & FVMQ umbrella valve is fluoro elastomer valve that has a mushroom shape. Fluorosilicone umbrella seal valve can be used as sealing element to prevent backflow for one-way valves, check valves, in vent valves or pressure relief valves and in metering valves. 

Fluorosilicone Rubber(FVMQ) Property Sheet.pdf

Fluorosilicone (Liquid Silicone Rubber) Data Sheet.pdf

Fluorocarbon Rubber(FKM & FPM) Property Sheet.pdf

FKM FPM FVMQ Umbrella Check Valve

FKM & FVMQ Check 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.

fluorosilicone vs silicone Umbrella Check Valve design guide

Features of FKM & FVMQ Valve

Fluorocarbon Rubber(FPM & Viton) Umbrella Check Valve

Fluorosilicone Rubber(FSR) Mushroom Seal Valve

High temperature resistant

Oil resistant, Flame resistance

Chemical products resistance

Low temperature propertirs

High-low tempreture resistance

Oil & Solvent resistant

Petrol resistance

Ageing resistance

In addition, fluorocarbon rubber is the only elastomer that can be used in the fuel medium at -68-230℃.


Outside Diameter

Hook Height

Stem Diameter

Outside Surface: EDM process or texture surface for dust proof

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

FKM FVMQ Umbrella Check Valve Design Guide

FKM & FVMQ Umbrella One Way Valve Manufacturing Process

FKM & FVMQ Check Valve Application:

FPM & FVMQ valve with excellent performace are widely used in automotive, chemical and aerospace  industries.

Applications in automotive fuel including fuel alcohol and other fuel mixtures or in engine oil or automatic transmission oil often use fluorosilicone (FVMQ) and fluoroelastomer (FKM) rubber umbrella check valve. 

Even prolonged immersion in harsh engine oils, transmission and power steering fluids, and all grades of gasoline and jet fuels, there is little effect on properties for FVMQ umbrella valve. 

FKM Umbrella Mushroom Check Valve for Backflow PreventionFVMQ Silicone Rubber Umbrella Valve

Off-the-shelf Umbrella Seal Valve:

Type Material
Umbrella Check Valve Fluorosilicone/FVMQ
Optional Color:  Color can be customed, gray, black generally
Optional Hardness: 45 shore A to 70 shore A generally
Optional Material: Silicone/VMQ, Viton/FKM/FPM, Fluorosilicone/FVMQ, NBR, EPDM etc.
Opening Pressure & Back Pressure:Provide different different samples for your testing

drawing-14.5mm.pdf                           drawing-20mm.pdf                        drawing-24mm.pdf

drawing-31mm.pdf                             drawing-32.5mm.pdf                    drawing-34mm.pdf

Fluorosilicone Valve

Umbrella Valve Seal

FVMQ Umbrella Valve

Xiamen Better Silicone Rubber Co., Ltd not only specialized in providing off-the-shelf umbrella check valve but also supporting custom made various silicone rubber mushroom seal valve to meet your every application.

Anti Bacterial umbrella valve

silicone rubber umbrella valve


Contacts with us

  86-18159020626
Do you have 3D drawing or sample? so that we can estimate the price for you.You can contact me at my e-mail address:
 Room No. 513-515, 5F, Culture Creative Park,
No.10 Huli Avenue, Huli District, Xiamen, China.(office)
 2F, No. 165, Tong'an Park, Industry cluster zone, Tong'an District, Xiamen, China (factory)
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