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Högfors Oy is the first valve manufacturer in the world to achieve the highly respected P-mark for its metal seated butterfly valve type 31300CS.
The above mentioned Högfors butterfly valve was tested according to D:210 for closing and body tightness, durability and body strength. Having undergone severe mechanical stresses and several hundreds of operation cycles under elevated pressure and various temperatures the valve was pressure tested and still showed perfect closing tightness (class A).
This is unique in the world for a metal seated butterfly valve and again shows the high level of product development and manufacturing within the Högfors Oy organization.
The P-mark is granted by the independent Swedish certification organization SP Sveriges Tekniska Forskningsinstitut.
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