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 wafer
lugged body pattern to ensure precise location in pipe line.
The body liner which also functions as the soft seat, comes
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.
General design and manufacturing
Valve face to face dimensions
Top flange drilling
Valve inspection and testing
Flange standard conformity
:
:
:
:
:
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
1.
Valve type
:
Centric Disc Rubber Lined
Butterfly valve with a single piece body
2.
Body type
:
Wafer lugged
3.
Seat type
:
Bonded Seat
4
End 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
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.
Specifications & dimensions are subject
to change without prior notice
Handlever for sizes DN 50 to DN 200
