Product - WR Series

​​​​​​​​Sanitation Line: Butterfly Valve

Our high performance butterfly valve WR series has been designed for the growing sanitation market. Developed to international standards, it has an automatic sealing system, providing high reliability under high and low pressure, longer service life and low operating torque.

Key features​

  • Eccentric or double eccentric disc  

  • Shaft sealing

  • Manual or automatic actuation

  • Automatic sealin​


  • ​Body
    Flange style body for installation between flanges according to ASME, AWWA, DIN and NBR Standards. Face to face dimensions according AWWA C-504

  • ​Disc
    Disc designed to minimise pressure drop in fully open position, as well as to allow greater flow rate in smaller degrees of opening

  • ​Shaft sealing
    Sealing is made by gaskets with packing gland mounted in an inverted position, allowing easy adjustment and uniform compression of the gaskets without interfering with actuator mounting directly on the top flange. Standard gaskets facilitate their interchangeability

  • Actuation
    The valve body and top flange are designed to allow manual, pneumatic or electric actuation while ensuring it still meets ISO 5211

  • ​Automatic sealing
    It ensures tightness under low and high pressure, attached to disc by means of stainless steel retaining ring

  • ​Seat
    It is mechanically fitted to the body with
    a polished sealing surface, guaranteeing low operating torque and longer
    service life

  • ​Finite elements
    Designed and developed using the latest software and finite element analysis to ensure design integrity and the reliability of the valve​

Product Specification

Construction standard
AWWA C-504

Long and short body

Face to face
AWWAC-504 - FLG standard

75 ro 2500mm

Elastomer / Polyurethane

ASTM A-536 i for grade 65.45.12
ASTM A-351 stainless steel for grade CF8M
ASTM A-536 cast iron for grade 65.45.12
NBR (Buna N) ASTM D-2000
ASTM A-276 stainless steel for grade 410
ASTM A-276 stainless steel for grade 304

Typical dimensions​

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Product - WR Series