Fluorosilicone VS. Silicone for Gasket Seal Valve: Fluorosilicone (FVMQ) is an elastomer which likes silicone (VMQ) offering excellent extreme temperature stability along with greater resistant to fuel, oil, petroleum based fluid, non-polar solvents, acid and alkaline chemicals similar to fluorocarbon rubber (FKM, FPM, Viton). Fluorosilicone gasket, seal, o-ring and check valve are widely used.
What is umbrella valve？Umbrella valve, also known as mushroom valve, umbrella check valve, is a kind of one way valve, check valve, back-flow valve, and non-return valve that are widely used as sealing parts in backflow prevention devices for controlling air or liquid flow in one direction and check
Umbrella Valve Seal, known as Umbrella Check Valve or Mushroom Valve, which is one type of silicone one way check valve ( backflow valve & pressure relief valve). Silicone Umbrella Valve, which have round diaphragm seals & seat for air or water pressure relief and backflow controls like Belleville v