The model HSI 15,000 choke assembly is the perfect choice for fracturing and flowback applications. It is rated at 15,000 PSI design working pressure and outfitted with the ever so popular 1502 union to allow for easy installation and removal. The HSI choke features full interchangeability of parts with the same choke manufactured by others and utilizes the common OTC type N seat and FC-140 flow bean. This is a big advantage in that these replacement parts are common supply store items and easy to locate. Make the HSI 1502 assembly your choice when you require a simple yet reliable choke assembly. New Star Flow Control also carries a full line of replacement parts and choke beans for both the positive and adjustable models.