How to Choose Sanitary Semi-Seal 3pc Ball Valve & Hygienic Encapsulated Seal 3PC Ball Valve

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For J&O Sanitary 3pc Ball valve, there are 2 seal types, one is Semi-Seal, another is Encapsulated Seal

How to Choose Sanitary Semi-Seal 3pc Ball Valve & Hygienic Encapsulated Seal 3PC Ball Valve

It is semi-seal, it shows clearly that the seal only pack half part of the ball.

How to Choose Sanitary Semi-Seal 3pc Ball Valve & Hygienic Encapsulated Seal 3PC Ball Valve

It is Encapsulated Seal, Cavity filled PTFE Seat.
With such design, it is high pure and no residue, it is widely used for high cleaning envirenment, like Pharmacy, Bio-Chemical, Wine..