TerraFLO Dual Activated Circ-Subs
Achieve greater flexibility and simpler operations in downhole applications with our dual-activated circulation valve.
Designed to withstand the rigors of today's demanding applications, the TerraFLO™ Dual Activated Circ-Sub has been thoroughly tested to ensure reliable actuation when needed. The circ-sub can be used to isolate and allow pumping of fluids to the annulus that might typically damage any equipment run below the circ-sub. When actuated, the overall flow area is increased, allowing for higher flow rates (for a given pressure) to be achieved, improving annular velocity and overall hole-cleaning capabilities.
In addition to drop-ball functionality, the TerraFLO circ-sub can also be activated at a predetermined pressure via a burst-disc if the BHA has become plugged off and loses the ability tocirculate.
![Vertical render of a TerraFLO Dual Activated Circ-Sub](https://www.nov.com/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fnationaloil37c5-novinc-prod-e309%2Fmedia%2Fnov%2Fimages%2Fproducts%2Fwbt%2Fdownhole%2Fdual-activated-circulation-valve%2Fterraflo-dual-activated-circsubs-vertical.jpg&w=3840&q=75)
![Horizontal render of a TerraFLO Dual Activated Circ-Sub](https://www.nov.com/_next/image?url=https%3A%2F%2Fedge.sitecorecloud.io%2Fnationaloil37c5-novinc-prod-e309%2Fmedia%2Fnov%2Fimages%2Fproducts%2Fwbt%2Fdownhole%2Fdual-activated-circulation-valve%2Fterraflo-dual-activated-circsubs-horizontal.jpg&w=3840&q=75)
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