Product Introduction：PFT adjustable Needle Type Choke Valve 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 multiple of 1/64" to show effective orifice diameter. A needle lock device retains needle position.
·Adjustable Needle Choke and Positive Choke body has interchangeability;
·Bleeder valve allows the operator to safely vent the body cavity pressure prior to removal of the bonnet assembly;
·The cap plug is fixed by the union nut, easy to disassemble and assemble, low cost;
·The O-ring seal is used between body and plug at low pressure. And metal seal is used at high pressure;
·Stem packing is lower mounted to provide an effective seal under pressure;
·Choke beans and discs are made of tungsten carbide,which can resist erosion and effectively prolong the service life;
·The indicator plate shows the effective throttling diameter in increments of 1/64", and the stem is locked in an open position with a set screw.
-Size: 2-1/16" ~ 7-1/16"
-Pressure: 2,000 ~ 15,000PSI
-Material: AA, BB, CC, DD, EE, FF, HH
-Temperature: L, N, P, S, T, U, V, X, Y
-Specification: PSL1 ~ PSL3G
-Performance: PR1, PR2