The Rebco ROTFB-2 is an Equalizing Check Valve (Standing Valve) designed to be set into ROTF Landing Nipple profiles. Its fundamental function is one-way flow control: it prevents downward fluid flow through the nipple while allowing full, unrestricted upward flow, the defining behaviour of a standing valve used in tubing testing and fluid control applications.

The ROTFB-2 is not mechanically locked into the nipple profile. Instead, the No-Go shoulder built into the Packing Mandrel seats against the bottom of the ROTF nipple bore, and the nipple's No-Go shoulder prevents any downward movement of the assembly. This means the tool rests and seals on its No-Go, which cannot be pushed through, but it is not latched or locked in place by keys or slips. To protect the packer elements and ensure a safe retrieval, the ROTFB-2 incorporates a built-in equalizing feature that equalizes wellbore pressure across the check valve before the pulling tool breaks the packing seal and the assembly is retrieved to surface. Attempting to pull the ROTFB-2 without equalizing first would subject the pulling tool and wireline to the full differential pressure across the valve, potentially causing a dangerous condition.

Available in nominal sizes 2⅜" through 4½", covering seal bore sizes from 1.781" to 3.813". Run using the ROTC-1 Running Tool; retrieved using the SB Pulling Tool or JDC Pulling Tool, both selected by nominal size. Available in a variety of materials to suit downhole conditions.

How to Order: Product Code 12. Specify nominal size, seal bore size, and material. Specify ROTF nipple profile compatibility when ordering.