Choke valve, with working pressure up to 20000psi, can be classified as follows: adjustabel choke valves and positive choke valves. By rotating hand wheel to move the stem, the adjustable choke valve is designed to adjust the effective area available for the flow to accomplish control of production rate. The positive choke valve is design to accomplish control of production rate by changing flow beans.
Main technical date:
Working pressure: 2,000-20,000 psi
Nominal bore: 2-1/16"-- 7-1/16"
Working temperature: PU
Product specification levels: PSL 1-4
Performance requirement: PR 1-2
Material class: AA-FF
Working medium: crude oil, natural gas, drilling fluid.
Adjustable choke valve:
Valve needle and spool are made of tungsten carbide, with sufficient corrosion resistant, antieroding and wearabel capacity.
The two kinds of adjustable choke needle type and external sleeve type could apply to wellheads & X-mas tree and choke manifold.
Positive choke valve:
Material of choke bean is fabricated from ceramic and tungsten carbide, with sufficient corrosion risistant, anti-eroding and wearable capacity.
It adopts union bonnet so as to change choke quickly.
It has application in wellhead & X-mas treeand choke line.
