Product description
The adjustable needle choke has a standard body with an adjustable bonnet assembly and seat installed. This assembly features a tungsten carbide-tipped needle, tungsten carbide-lined seat, and an indicator calibrated in 1/64" or multiple of 1/64" to show effective orifice diameter. A needle lock device retains needle position.
Features:
01.Adjustable Needle Choke and Positive Choke body has interchangeability.
02.Bleeder valve allows the operator to safely vent the body cavity pressure prior to removal of the bonnet assembly.
03.The cap plug is fixed by the union nut, easy to disassemble and assemble, low cost.
04.The O-ring seal is used between body and plug at low pressure. And metal seal is used at high pressure.
05.Stem packing is lower mounted to provide an effective seal under pressure.
06.Choke beans and discs are made of tungsten carbide, which can resist erosion and effectively prolong the service life.
07.The indicator plate shows the effective throttling diameter in increments of 1/64" or 1/64", and the stem is locked in an open position with a set screw.