Product Description:
The Ball Seat Circulating Sub is designed to be the lowest most seating sub in a multi-stage frac system in either open or cased hole applications. The BSC can be used in either horizontal or vertical wells and after a ball is circulated onto the seat and once an adjustable pre-determined pressure is applied, the internal sleeve shifts downwards which closes the internal circulating ports. Once the sleeve has been shifted, a positive locking mechanism ensures it is securely maintained in place.

Standard ball seat and ball sizes are 0.75" (19.05mm) / 1.00" (25.40mm) and 1.00" (25.40mm) / 1.25" (31.75mm) but can be customized if required.