The Rebco ROTB and ROTH Equalizing Subs are designed for use with subsurface controls such as Lock Mandrels, covering nominal sizes of 2", 2-1/2", and 3". Both subs are structurally identical, with the single distinction that the ROTH has a larger minimum ID, making it suitable for applications requiring a larger equalization flow area. The ROTB carries an effective orifice plate area of .003", while the ROTH uses .006"; a third variant with a .011" orifice plate area is also available in the same nominal sizes and shares the same overall dimensions as the ROTB and ROTH. All sizes are constructed from Stainless Steel and require a running or pulling equalizing prong for operation.

The equalization is achieved by the prong engaging the internal orifice plate valve and opening a small, controlled flow path across the lock mandrel and flow control device, allowing pressure to gradually bleed off before retrieval is attempted. Both Box and Pin thread connections are offered on the same sub-assembly, with thread sizes of 1 3/16"-14 for the 2" size, 1 9/16"-12 for the 2-1/2" size, and 2"-12 for the 3" size, consistent across the ROTB, ROTH, and the .011" variant. All versions have a uniform length of 4.25" across all nominal sizes.

How to Order: Product Code 20. Specify nominal size (2", 2-1/2", or 3"), orifice size (.003" ROTB, .006" ROTH, or .011" variant), material, and service conditions. Note that an equalizing prong is required for operation and must be specified separately.