Choke values fall into five types:the fixed choke value ,the needle choke value ,the pluger choke value ,the cage-type choke value and the orifice choke value. The application of the materials,of which the main body and the components of choke values are made,tallies completely with the API6A and NACE MR-0175 standards. These choke values are extensively used in off-shore and land oil drilling operations and also in oil production. Features

fitted? with a value-opening indicator

designed with the relief value

designed with the plane thrust bearing structure

designed with the meal-to-meal sealing structure

fitting with the value stem sealed by using some special material made lip-shaped packing

made of high wear-resising& corrosion-resising materials, both the value core and bean are durable designed and manufactured strictly in accordance with API Spec 6A ,ANSI and NACE MR-0175 standards.