Special Purpose Rubber Lined Butterfly Valve with Lugged Body

Special Purpose Rubber Lined Butterfly Valve with Lugged Body

Key Features
  • Full PN10 pressure rating for entire range of DN50 to DB350.
  • Bi-directional valve with sealing capability to hold rated shut off pressure in either direction.
  • Unique triple sealing system for shaft sealing, eliminates any fugitive emission or secondary leakage.
  • Self  lubricated shaft bearings (PTFE coated stainless steel) for both drive end and non-drive end shaft ensures minimum bearing friction torque.
  • Square coupling disk drive arrangements eliminates need for taper pins and exposure of metal parts to media.
  • Spherically profiled seat and disc shoulder contact area ensures perfect sealing around the shaft bore and zero leakage.
  • External locking arrangement for top shaft to make it blow out proof.
  • Seat liner extending on to the flange faces of the body eliminates the need for separate flange gaskets.
  • Controlled compression of the gasket face to offer optimum sealing & prevent gasket face crushing due to over tightening.

The IVTLE 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, rubber encapsulated disc construction and is available in a wafer-lugged body pattern to ensure precise location in the pipeline.

The body liner, which also functions as the soft seat, comes in an integrally moulded (bonded) version and offers 100% bi-directional sealing against rated pressures of PN10.

The lugged version with threaded holes can be used as end-of-line valves or terminal end valves.

Applicable standards

General design and manufacturing
Valve face to face dimensions

Top flange drilling
Valve inspection and testing
Flange standard conformity

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EN 593
EN 593 / Short Wafer lugged as per IS0 5752 Tab-5 / API 609
category A
ISO 5211
EN 12266 Part 1
DIN EN 1092 – PN 6 / PN 10 / PN 16, Class 150, JIS5K /
10K, BS 10 Tab D & E, IS 6392 Table 11 / 17

Technical Specifications

1.

Valve type:Centric Disc Rubber Lined Butterfly valve with a single piece body
2.Body type:Wafer lugged
3.Seat type:Bonded Seat
4End Connection:Wafer lugged
4.Size range:DN 50 to DN 350
5.Pressure rating:PN 10 (max)
6.Operating temperature range:-250 C to 2000 C (depending on MOC)
7.Seat leakage performance:Tight shut off (Bi-directional)
8.Operation: Handlever for sizes DN 50 to DN 200
Worm gear boxes for sizes from DN 50 to DN 350
Pneumatic / Electric actuator operation-optional
9.Standard Material of Construction (MOC)
Valve Body:SGI / WCB
Disc:SGI / WCB  (Rubber Encapsulated)
Seat liner:EPDM / Viton / Nitrile / Neoprene / Hypalon
Drive end & non drive end shafts:SS410 / SS316SH / 17.4 PH

Material Diagrams

Sizes / Dimensions