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Las válvulas de mariposa son válvulas de un cuarto de vuelta con características de flujo de tipo porcentual iguales. Proporcionan un control de flujo moderado y, por lo tanto, se pueden utilizar tanto para el servicio de activación / desactivación como para el de modulación. Buena tolerancia a los sólidos en suspensión, pero no se recomienda su uso con lodos o residuos. La válvula de mariposa es adecuada para una amplia variedad de aplicaciones de flujo de fluidos.

Type-55 butterfly valves are quarter turn plastic valves with equal percentage type flow characteristics. They provide moderate flow control and therefore can be used for both on/off and modulating service. The Type-55 butterfly valve features an epoxy powder coated ductile cast iron body with PTFE disc and Liner. The Type-55 is designed for use in applications where conventional rubber liners and thermoplastic discs would fail. Can be pneumatically or electrically actuated.

Ideal Applications Include: 

Isolation valves, control valves, chemical processing, mining


  • • Highly corrosion resistant PTFE disc and seat
  • • Epoxy powder coated ductile iron body for corrosive atmosphere or environments
  • • Strong but thin disc with high Cv value
  • • Stainless steel stem has full engagement over the entire length of the disc and is a nonwetted part, totally isolated from the media
  • • Only PTFE disc and PTFE seat are wetted parts
  • • Bubble-tight shut-off
  • • Rated for full vacuum service
  • • Locking device
  • • 18 position throttle plate for lever handle style



2" – 10"


Epoxy powder coated ductile cast iron


PTFE backed with Neoprene®

Trademark of E.l. du Pont de Nemours and Company


Same as seating material


Wafer Style


Lever: 2" - 5"
Gear: 2" - 10"




Stainless steel 304


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