Tel: +44 (0) 2890 020190
Triple offset disc design high performance butterfly valve

The future of butterfly valves is here. The triple offset design features a conical profile of the seating elements which eliminates friction during operation resulting in significantly reduced risk of deformation as well as reduced torque figures.

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, ISO5752, DIN 3203, MSS-SP-68, JIS F7480, JIS B2032, KSV7490 - Custom dimensions also available
Valve inspection and testing API 598 / API6D
Flange standard conformity ANSI 150/300/600/900/1500 and PN 10/16/25/40 - JIS and BS standards also available
Fire safe testing: API 607, 6FA, BS6755

Technical Specifications

Feature Value
Construction & Type Triple offset disc design high performance butterfly valve
Valve type & models TML lugged pattern version
TMW wafer pattern version
TMF double flanged pattern version
Body type & end connection Wafer / Lugged / Double flanged
Size range 50 NB to 2000 NB
Seat leakage Tight Shut Off (TSO)
Operating temperature range -253C to 815C for dolid metal seats (Depending on MOC)
-40C to 650C for laminated metal seats (Depending on MOC)
Operation Worm gear box
Pneumatic /Electric/Hydraulic actuator operation - optional
Available material of construction (MOC)
Body/Disc WCB / LCC / CF8 / CF8M / AB2 / Duplex / Super Duplex (1A-6A) / Alloy 20 / Hastelloy / Austenitic Stainless Steel (6MO) - Others available upon request
Seat Solid or Graphite laminated Stainless steel / Inconel / Dupex / Super duplex
Shaft AISI 410 / 17-4 ph / UNS32760/ Monel
Other materials available on request


Tel: +44 (0) 2890 020190
Unit 4, 38-40 Duncrue Crescent
Belfast, BT3 9BW
© Copyright Frenstar 2013. All Rights Reserved.