Neeco Industries’ flagship API-6A Gate Valve is our Neeco Frac Series 935 Gate Valve. 935 Series Large-bore valves are best suited for the harsh conditions inherent during hydraulic fracturing.935 Series Valves consist of the NF-500, which is a 5 1/8” full-bore valve. Available in 10,000 to 15,000 PSI pressure ratings and feature a one-piece seat design with simplified parts for easy assembly and operation.It has a proven track record in the field with some of the most well known service companies operating in the various shale plays of the United States.935 Series Valves are made with dual-bonnets (lower balancing stem) and contain a ball-screw assembly to reduce torque levels during working pressure. The ball-screw assemblies allow to be open or closed with the least amount of turns while under pressure. Valves are also available with Double-Acting Hydraulic Actuators.