Categories: ,

Butterfly Valve (Series 2100)

The Series 2100 butterfly valve is available in full cut (200 PSI close off) and undercut (100 PSI close off).  

VSI’s Series 2100 butterfly valves have proven to be the most versatile design standard in the building and process control industries.

Available as a tested package with a wide range of electric and pneumatic actuators and accessories to fit any application.

Standard features include:

  • Ductile iron body
  • SS 304 disc
  • EPDM seat
  • 100/200 PSI close off
  • Sizes 2” to 30”

View All Butterfly Valve Assemblies


Stem design: Available in square shaft for easy mounting of actuators, levers and gear operators.
Top flange: Conforms to ISO 5211 for the mounting of actuators, levers and gear operators.
One piece shaft: Maintains disc position.
Resilient seat surface: Eliminates the need for gaskets on flanges.
Shaft pins: Enables a vibration free connection between the shaft and the disc.
Bi-directional secured seat: Phenolic backed seat is bi-directional and blow out proof.
O ring seal: Provides a seal to interior stem and bushings.
Bushings: Provide correct alignment of shaft through the body and reduces torque.
Stem seal: Positive seal in both directions to prevent leakage.
Disc edge: Smooth finished disc edge provides superior seal, reduces valve torque and provides bubble tight shutoff.
Bi-directional body & seat design: Suitable for bi-directional use at full rated pressure.
Backed seat support: Prevents stem leakage and high valve torque from poor installation.
Dead end service option: Available with special dead end service option that allows installation of valve on discharge/intake pipes with no downstream pipe or flange.


Document TypeDownload
Valve Product BrochureDownload PDF
Valve Installation, Operation, and Maintenance ManualDownload PDF
Scroll to Top