Tel: +44 (0) 2890 020190
High Performance Butterfly Valve

The ultimate in high performance butterfly valves. The double offset design eliminates seat wear due to the action of the disc during closing. Stops incorporated in the valve body ensure precise closing.

The valve is available as wafer or tapped lug in three different designs, soft seat, fire safe and metal to metal.

The IVEX valve has excellent throttling characteristics with good low flow control capability. This feature makes the IVEX valve ideal for modulating duties.

An adjustable gland ensures zero leakage.

The fire safe version IVEX-F has been tested and certified as per the requirements of API 607 standard by Lloyds Register of Shipping.

Conformity to codes and standards:

General design & manufacturing API 609 Category B
Pressure temperature rating: ANSI B 16.34
Valve face to face dimensions API 609 Category B / ANSI B16.10
Valve inspection and testing API 598 / ANSI / FCI 70-2
Flange standard conformity ANSI 150/300 and PN16/25/40
Fire safe testing: API 607

Technical Specifications

Feature Value
Construction type: Double offset disc design high performance butterfly valve
Valve type & models IVEX-F Fire safe seat version
IVEX-T Soft seated PTFE seat version
IVEX-M Metal to metal seated version
Body type & end connection Wafer or wafer lugged
Size range 80 NB to 600 NB
Seat leakage Better than class VI for IVEX-F, IVEX-T Class IV for IVEX-M
Operating temperature range: -50C to 220C for IVEX-T (Depending on MOC)
-50C to 220C for IVEX-F (Depending on MOC)
-50C to 600C for IVEX-M (Depending on MOC)
Operation Handlever for sizes 80 NB to 150 NB
Worm gear box for sizes 80 NB to 600 NB
Pneumatic / Electric actuator operation - optional
Available material of construction (MOC)
Body/Disc WCB / LCB / CF8 / CF8M / AB2 / Duplex / Super Duplex (1A-6A) / Alloy 20 / Hastelloy / Austenitic Stainless Steel (6MO)
Seat PTFE / Glass filled PTFE
Shaft AISI 410 / SS 316 SH / 17-4 ph / UNS32760/ Monel


Tel: +44 (0) 2890 020190
Unit 4, 38-40 Duncrue Crescent
Belfast, BT3 9BW
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