A real workhorse from the IV stables, IVGK model Butterfly valve incorporates the optimum design features to provide long trouble free service in the field. This general purpose soft seated Butterfly valve has a fully rubber lined single piece body with centric disc construction and is available in wafer type body pattern.

The body liner which also functions as the soft seat, comes in either a replaceable version or an integrally molded (bonded) version and offers 100 % bi-directional sealing against vacuum to rated pressure of PN10 or PN16.

The wafer style body has universal design to fit between pipe flanges of almost all popular flange standards.

General design and manufacturing
Valve face to face dimensions

Top flange drilling
Valve inspection and testing
Flange standard



API 609 category A / EN 593
API 609 category A / EN 593 Short wafer as per ISO 5752 Tab 5
ISO 5211
API 598 / EN 12261 Part 1
Class 150, DIN EN 1092 - PN 6 / 10 / 16,
JIS5K / 10K / 16K
BS 10 Tab D & E, IS 6392 Table 11 / 17
For sizes >  DN650 ANME B16.47 Class 150
Series A / B & BS 3293 Class 150 and  API 605


Valve type :

Centric Disc Rubber Lined Butterfly valve with a single piece body.

2. Body type : Short wafer (IVGK)
3. Seat type : Replaceable for sizes DN 50 to DN 600 < PN10 rating.
Bonded seat for sizes DN 40 to DN 1200 for applicable ratings.
4. End connection : Wafer sandwiched
5. Size range : DN 40  to DN 1200
6. Pressure rating : *DN 40  to DN 600 - ASME Class 150 (max)
DN 650 to DN 1200 - PN10 (max)
7. Operating temperature range : -250 C to 2000 C (depending on MOC)
8. Seat leakage : Tight shut off  (Bidirectional)
9. Operation : Handlever up to size DN 250
Worm gear boxes for sizes from DN 40 to DN 1200
Pneumatic / Electric actuator operation-optional
10. Standard Material of Construction (MOC)
  Valve Body : CI / SGI / WCB / CF8 / CF8M
  Valve Disc : SGI / WCB / CF8 / CF8M
  Seat : EPDM / Viton / Nitrile / Neoprene / Hypalon / Silicon
  Drive end & non drive end shafts : SS 410 / SS 316 SH / 17.4 PH
 * PN16 and below ratings are as per EN593

  • Unique triple sealing system for shaft sealing, eliminates any fugitive emission or secondary leakage.
  • Self  lubricated PTFE lined bearings for both drive end and non-drive end shaft ensures minimum bearing friction torque.
  • Seat liner extending on to the flange contact faces, eliminates the need for separate flange gaskets during installation.
  • Controlled compression of the gasket face to offer optimum sealing & prevent gasket face crushing failure.
  • Bi-directional valve with tight shut off sealing capability to hold vacuum to rated pressure in either direction.
  • Excellent adaptability for actuated operation through standardised top flange mounting dimensions for actuator fitment.
  • Suitability for ON /OFF as well as throttling duties.
  • Choice of seat and disc materials to suit media conditions and service requirements.
  • Adaptability to fit between companion flanges of all popular flange standards for the wafer style body.
  • Possibility of lower seat rating to obtain reduced operating torque and extended seat life for low operating pressures.
  • Valves of DN 250 and higher are provided with bottom thrust bearings.
  • Valves of DN 600 and higher are provided with additional top shaft sealing and guide brush.

Specifications & dimensions are subject to change without prior notice