Valves

With the objective of offering first line products to brazilian energy companies, Marangoni has specialized itself in the manufacture of butterfly valves for transformers.

Marangoni is constantly upgrading its skils to make sure the butterfly valves keep their tightness. It’s a great challenge considering it’s an Iron / Iron Sealing, which is used to guarantee the non-contamination of the transformer’s oil.

Structure Standard Butterfly Valve
Diameter: Standard 3” (76mm)
Fixation Holes: Standard M16
Opcional 17mm with no bolt or 5/8 bolt
Body: Composed of nodular cast iron with gasket channel on both sides.
Disc: SAE 1045 Steel
Axis: SAE 1045 Steel drawn and rectified
Surface Treatment: Bichromated or Bichromated and painted**
Triple Sealing: Composed of 3 O’ Rings in nitrile rubber or silicone fluoride
Cap with sealing: In injected aluminum, incorporating limiter and opening indicator, its fixation is in stainless steel 316

Structure Special Butterfly Valve
Diameter: 2”, 3”, 4”, 5”, 6”, 8”, 10” and 12”
Fixation holes: According to the Project
Body: The material of the body can be produced in: Standard A-36 Steel or Special SAC-50 and 316 Stainless steel
Disc: A-36 Steel. It can be changed to SAC-50 or 316 Stainless Steel
Axis: SAE 1045 Steel drawn and rectified
Surface Treatment: Bichromated or Bichromated and painted **
Triple Sealing*: composed of 3 O’ Rings in nitrile rubber or silicone fluoride*
Cap with sealing*: In injected aluminum, incorporating limiter and opening indicator, its fixation is in stainless steel 316

*Special Projects.
** Except Stainless Steel.

 

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Standard Model

Drawing valve DN 76-3"

Special Models

Drawing (ANSI) valve

Drawing (DIN) valve

Drawing 3" Rectangular valve

Drawing 4" 150x156 valve

Drawing 4" 180x186 valve

Drawing 50,80,100 valve

Drawing Rectangular 5" valve

Drawing DN 60 valve

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