Zwick triple offset valves for national tank farm
31 July 2020
One of the Valve & Automation clients required Triple Offset Valves (TOV) for their national tank farms to tie into the Transnet Multi-Product Pipeline. Their numerous other chemical plants throughout the world as well as their local refinery already use hundreds of Zwick Tri-Con valves, so they had a proven track record to draw on when making their final decision on what TOV to select for their tank farm tie ins.
Currently, their local production plants use Zwick Tri-Con Triple Offset Valves up to 54”, so valves in 12” and 20” on the final product (hydrocarbons) would give them a lifetime far longer than those on harsh production applications experienced in their chemical plants.
Rotork Electro-Hydraulic actuator was fitted to the 12” and 20” Zwick B1 Tri-Con valves with gate valve face to face dimensions. This application for Zwick Tri-Con called for class V shutoff whereas Zwick can provide up to Zero leakage and as the product is the final product, the valve will not be subjected to harsh conditions like high pressure and high-temperature chemical plant.