General Purpose Rubber Lined Butterfly Valves with Lugged Body

General Purpose Rubber Lined Butterfly Valves with Lugged Body

Key Features
  • A 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 ensure minimum bearing friction torque.
  • Seat liner extending onto 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 standardized 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.
  • The lugged wafer pattern ensures precise self-centering of the valve between mating flanges.
  • Possibility of lower seat rating to obtain reduced operating torque and extended seat life for low operating pressures.

Yet another real workhorse from the IV stables, the IVTL 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 a centric disc construction and is available in wafer lugged style body pattern to ensure precise location in the pipeline.

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

Applicable 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 lugged as
per ISO 5752 Tab 5
ISO 5211
API 598 / EN 12266 Part 1
Class 150, DIN EN 1092-PN6 / 10 / 16, JIS5K
/ 10K,
BS10 Tab D & E, IS 6392 Table 11 / 17
For sizes > DN
650 ASME B 16.47 Class 150
Series A / B  & BS 3293 Class 150 and API 605

Technical Specifications

1. Valve type : Centric Disc Rubber Lined Butterfly valve with a
single piece
body.
2. Body type : Wafer lugged (IVTL)
3. Seat type : Replaceable for sizes DN50 to
DN600 <  PN10 rating.
Bonded seat for sizes DN40 to DN1200 for applicable ratings.
4. End connection : Wafer lugged
5. Size range : DN 40 NB to DN 1200
6. Pressure rating : *DN 40 NB 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
(Bi-directional)
9. Operation :
Handlever for sizes from DN 40  to 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
Disc : SGI / WCB / CF8 / CF8M
Seat liner : EPDM / Viton / Nitrile / Neoprene
/ Hypalon / Silicon
Drive end & non drive end shafts : SS 410 / SS 316SH / 17.4 PH
 *PN16 and
below ratings are as per EN 593

Material Diagrams

Sizes / Dimensions

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