Overview

TRI-BLOCK SERIESDOUBLE BLOCK AND BLEED

The Double Block and Bleed design features every technical advantage which the series TRI-CON has plus there is a true double block and bleed feature which delivers zero leakage. By using this design, the former two valve system with a spool piece becomes obsolete. This fact is not only important for in­stallation since you have to install only one valve body in the pipeline, but also only one actuator or gearbox is required.

With ZWICK’s unique design of the linkage between the two shafts, the user is able to actuate both shafts with only one actuator and reach zero leakage with the two available sealing surfaces.

Specifications

Size Range 50mm – 1600mm (2” – 64”)
Flange Accommodation BS4504 PN10/16/25/40/64/100
ANSI B 16.5, Class 150/300/600/900
DIN 2501 PN 6/10/16/25/40/64/100
MSS SP44 Class 150/300/600/900
Temperature Range –196°C to + 550°C (depending on material & pressure)
Pressure Rating DIN PN10/16/25/40/64/100
ANSI 150/300/600/900
Body & Disc Material Carbon Steel Grades WCB/LCB/WC6
Stainless Steel Grades 303/304/316L/316Ti/CF8/CF8C/CF8M
Duplex Stainless Steel
Inconel
Hastelloy C
Stem Material Stainless Steel Grades 303/304/316/316Ti/321/431/904L
Duplex Stainless Steel
Inconel
Hastelloy C
Seat Material Stainless Steel / Graphite
Stainless Steel Solid Lamination
Stainless Steel / PTFE
Hastelloy / Graphite
Duplex / Graphite
Inconel / Graphite
Hastelloy
Duplex
Inconel
Packing Material PTFE
Graphite
Kalrez

Manufacturer

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