General Purpose Rubber Lined Butterfly Valve With Lugged Body
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 pipe line.
The body liner which also functions as the soft seat comes either in a replaceable version or an integrally moulded (bonded) version and offers 100% bi-directional sealing against vacuum to rated pressures of PN 10 / PN 16 and fully rated to ANSI 150lb.
The tapped lug version can be used as end of line valves
Conformity to codes and standards:
Complies with the requirements of European Pressure Equipment Directive PED 97/ 23 / EC
Complies with the requirements of ATEX 94 / 9 / EC
Complies with the requirements of ATEX 94 / 9 / EC
| General design & manufacturing: | API 609 category A / BS 5155 / MSS SP-67 |
| Valve face to face dimensions | Short wafer or wafer lugged as per ISO 5752 Tab 5 & API 609 category A |
| Top flange drilling | ISO 5211 part II |
| Valve inspection & testing | API 598 |
| Flange standard conformity | ANSI 150, DIN PN6 / PN10 / PN16, JIS 5K / 10K, BS10 Tab D & E
For sizes 650 ANSI B16.47 Class 150 Series A / BS 3293 Class 150 and Series B / API 605 |
Technical specifications
| Valve type | Centric disc design butterfly valve with a single piece rubber lined body |
| Body type | Wafer lugged |
| Seat type | Replaceable for sizes 50 NB to 600 NB PN 10 rating
Bonded seat for sizes 40 to 1200 NB for all ratings |
| End connection | Wafer lugged |
| Size range | 40 NB to 1200 NB |
| Pressure rating | 40 NB to 600 NB PN 16 / PN 20 / Class 150lb 650 NB to 1200 NB - PN 10 (max) Others on request |
| Operating temperature range | -25C to 200C (Depending on MOC) |
| Seat leakage | Tight shut off |
| Operation | Handlever for sizes from 40 NB to 250 NB
Worm gear boxes for sizes from 40 NB to 1200 NB Pneumatic / Electric actuator - optional |
| Available material of construction (MOC) | |
| Body/Disc | CI / SGI / WCB / LCB / CF8 / CF8M / AB2 / Duplex / Super Duplex (1A-6A) Austenitic Stainless Steel (6MO) / Hastelloy Disc also available in Titanium |
| Seat | EPDM / Viton / Nitrile / Neoprene / Hypalon / Silicon |
| Shaft/td> | AISI 410 / SS 316 SH |
| Available material of construction (MOC) | |
| Body/Disc | WCB / LCB/ CF8 / CF8M |
| Shaft | AISI 410 / SS 316 SH |
| Other materials available on request |
Dimensions
KEY FEATURES
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 vaccum 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.
The lugged wafer pattern ensures precise self centering of valve between mating flanges.
Possibility of lower seat rating to obtain reduced operating torque and extended seat life for low operating pressures.