Choke Valve
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Choke Valve

A major component of the christmas tree and manifold, the choke valve is mainly used for controlling the production rate of an oil well at a working pressure of up to 20,000 psi. The choke valve can be classified as an adjustable choke valve or a positive choke valve. The adjustable choke valve is designed to adjust the effective area available, for the flow to control the production rate, through rotating the hand wheel. The positive choke valve is designed to control the production rate through changing flow beans.

Features:
■ Use API 6A, 6D and NACE MR0175 standard design and manufacturing;
■ The structure is simple, convenient to manufacture and maintain and low cost;
■ The coupling nut used for connecting the bonnet and body allows for fast make-up and break-out;
■ The stem tip and bean adaptor are fabricated from special carbide allows for corrosive and abrasive resistance;
■ The indicator lens with scale marks allows the operator to know the stem’s position and actual orifice area.

Description

Specifications:
■ Working pressure: 2000 psi ～ 20000 psi
■ Working pressure: 21/16″ ～31/16″
■ Working media: oil, gas and various drilling fluids
■ Working temperature: LU (-51oF/-46oC ～ 250oF/121oC)
■ Material grades: AA, BB, CC, DD, EE, FF, HH
■ Specification level: PSL1 ～ 3G
■ Performance level: PR1 ～2

Positive Choke Valve
■ Choke bean material is fabricated from ceramic and tungsten carbide, which has sufficient corrosion resistance, anti-erosion and wearablecapacity;
■ The valve adopts a union bonnet so as to change choke quickly;
■ The valve can be applied to wellheads, christmas trees and choke lines.

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