T-Butterfly Valve


(DN: 300 – 3000mm, PN: 6 – 40bar)

Butterfly valve with inflatable sealing is a kind of On/Off valve in fluid transfer systems that solve common problems in operating of butterfly valves such as:

  • Need for high operating torque
  • Sealing element distortion
  • Bypass line requirement for larger sizes

The sealing element of T-Butterfly valve consists of a circular T-cross section which is mounted in a slot of the valve body and by pressurizing on closing against the disk the valve will be sealed against the flow passage. The sealing element will be protected against floating objects in flow passage.

  •  Centric construction type
  •  Adjustable and replaceable sealing element
  •  Higher life span in comparison with usual butterfly valves
  •  Sealing capability in both side of disk
  •  Lower operating torque
  •  No need for bypass line
  •  No friction between disk and seat during opening and closing of valve
  •  No sealing interruption even while sealing element destruction is happened
  •  Lower weight and dimension
  •  Tight sealing around shaft, resulting no contact of fluid and min. sedimentation
  •  Capability of installation at any direction
  •  Closing in clockwise direction
  •  Capable of installing electric, pneumatic and hydraulic actuators
  •  Final test according DIN EN12266 or ISO 5208
  •  Face to face based on DIN EN 558-1, Series 13,14
  •  Flange drilling according DIN EN 1092 (DIN 2501) or ISO 7005
  •  Multi turn actuator attachment according to ISO 5210
  •  Part turn actuator attachment according to ISO 5211
  •  Gearbox is tight sealed
  •  All bolts and nuts in contact with fluid are made of stainless steel
  •  Coating paint: epoxy powder paint with electrostatic process
  •  According to customer’s order the valve will be constructed in fabricated steel or cast iron



Electrical, Manual

Fields of application

Water distribution

Shell Material


Size (mm)

DN300, DN350, DN400, DN450, DN500, DN600, DN700, DN800, DN900, DN1000, DN1200, DN1400, DN1600, DN1800, DN2000, DN2100, DN2200, DN2300, DN2400, DN2500, DN2600, DN2700, DN2800, DN2900, DN3000

Pressure (bar)

PN6, PN10, PN16, PN25, PN40, PN63