General Description

Positive Choke Valve is ideally suited for a broad range of choke applications, including wellhead equipment, choke line and other high-pressure pipelines. It's simple structure, opening indicating device and hammer union connected bonnet promotes ease of replacement and maintenance, and completely tungsten carbide pressure-controlling parts increases the valve's service life.

For positive choke valve, its flow section area will be changed by using choke beans of different size which have to be operated by a special tool, to control the flow. 

Specifications

Design & Manufacture：API SPC 6A
Connection： Flanged, Threaded or Union Connected
Nominal Diameter: 2-1/16'' ~4-1/16''
Working Pressure: 2000~15000Psi
Material   grade: AA, BB, CC, DD, EE, FF, HH
Body    Material: ASTM 4130

Application

1. Hard alloy steel pressure-controlling parts provide better erosion and corrosion resistance and longer service life than normal material;

2. Flanged, threaded or union connected type design as per clients's request;

3. Ease of field service, maintenance and pressure-controlling parts replacement;

4. High interchangeability of trim with the adjustable choke valve;

5. Stem seal design covers a full range of pressure, temperatures, and fluids encountered in wellhead and manifold service;

6. Each positive choke valve body with pressure relief equipment for safety and ease of pressure-controlling parts replacement on the pipeline.

7. The choke bean is generally made of stainless steel, as well as corrosion-resistant, brush-resistant ceramic, tungsten carbide and alloy steel.