Big John Choke Bean or Cameron Type H2 Positive Choke Bean lined with tungsten carbide

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Big John Choke Bean or Cameron Type H2 Positive Choke Bean lined with tungsten carbide

Price 50.0 USD ($)/ Unit

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MOQ : 1 Unit

Big John Choke Bean or Cameron Type H2 Positive Choke Bean lined with tungsten carbide Specification

Usage
Choke valve

Tungsten( in %)
85-92

Carbon %
4-6

Size

Application
oil & gas industry

Product Type
3" Big John

Coating Type
uncoated

Color

Accessories
no accessory

Length
6" Inch (in)

About Big John Choke Bean or Cameron Type H2 Positive Choke Bean lined with tungsten carbide

Product Overview

The Big John Choke Bean is a premium positive choke bean designed for precise flow control in oil and gas wellhead equipment. Also known as the Cameron Type H2 Big John Choke Bean, this component is widely used in positive choke valves to regulate the flow of fluids from wellheads, production trees, and choke manifolds.

As a critical valve trim component, the choke bean is installed in the choke body to control flow rate, reduce pressure, and enable accurate calculation of oil and gas production volumes. Each bean features a fixed-size precision orifice, allowing operators to calculate flow rates based on the specific orifice diameter selected.

Key Features

1) Exceptional abrasion resistance ideal for sandladen production fluid

2) High strength and rigidity withstands extreme pressusre differentials

3) Superior corrosion and erosion resistance suitable for HS and CO environments

4) Exellent impact and thermal shock resistance reliable under rapid pressure/temperature changes

5) CNC machined, high precision ensures precise fit and reliable sealing

6) Extended service life reduces replacement frequency and minimizes costly downtime

Tungsten carbide grade chart:

Grade	ISO Gade	Density (g/cm3)	Hardness (HRA)	TRS (KSI)
YG6	K20	14.9-15.1	90-91	335
YG8	K30	14.7-14.9	89-90	350
YG9	K30	14.6-14.8	88.5-89.5	375
YG11	K40	14.3-14.5	87.5-88.5	410
YL10.2	K30	14.4-14.6	91.5-92.5	520

Recommendation YG6/YG8 for moderate sand; YG9/YG11 for high sand, high impact conditions; YL10.2 for demanding HPHT applications.

Technical Specifications

Parameter	specification
Type	H2 Style Positive Choke Bean (Cameron Type)
Nominal Size	3" (Big John)
Overall Length	6"
Orifice Size Range	4/64" to 192/64" (in 1/64" increments)
Common Orifice Sizes (Inches)	1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4, 7/8, 1, 1-1/4, 1-1/2
Body Material	410 Stainless Steel
Liner Material	Tungsten Carbide
Alternative Body Material	17-4 PH Stainless Steel (available upon request)
Alternative Liner Material	Ceramic (available upon request)
Surface Treatment	QPQ treatment available to enhance surface hardness

Material Specifications

Body Material 410 Stainless Steel

Provides excellent strength and corrosion resistance

Suitable for sour service applications (with appropriate heat treatment)

Widely accepted in the oil and gas industry for choke bean bodies.

Liner Material Tungsten Carbide

Ultra-high hardness and wear resistance.

Effectively protects the bean from abrasive wear caused by sand and other solid particles entrained in production fluids.

Resists corrosive attack from HS, CO, and chlorides

Significantly extends service life compared to unlined steel beans

Applications

The Big John Choke Bean is designed for use in positive choke valves across a wide range of oil and gas operations, delivering reliable flow control in the following scenarios:

Wellhead Flow Control Regulating production flow rates from oil and gas wells.

Choke Manifolds Fixed choke box flow rate control.

Well Testing Precise flow measurement during production testing.

Production Operations Maintaining optimal production rates while protecting downstream equipment.

Sour Service Suitable for wells producing HS and CO

Abrasive Service Ideal for wells with sand production.

Why Choose Our Big John Choke Bean?

Direct Replacement, Zero Modification

Our Big John choke beans are 100% interchangeable with original Cameron H2 choke beans. No modifications to existing choke bodies or equipment are required simply install and operate.

Superior Materials for Extended Life

The combination of 410SS body and tungsten carbide liner (C10 or C25 grade) delivers exceptional resistance to both abrasive wear and corrosive attack the two primary failure mechanisms in choke bean service. Engineered with a premium tungsten carbide lining, our choke beans are built to outlast conventional steel beans in the harshest downhole conditions.

Precision Manufacturing

Each choke bean is precision-machined to exacting tolerances, with orifice diameters graduated in 1/64-inch increments for accurate, repeatable flow control.

Quality Assurance

1. ISO 9001: 2015 cerfified - Our factory operates under a certified quality management system

2. Material Certificate available upon request, full material traceability

3. Dimensional Inspection Precision measurement of all critical dimensions

4. Hardness Testing Verification of body and liner hardness

5. Surface Finish Inspection Quality control of all finished surfaces

Ordering Information

To help us provide you with an accurate quotation, please specify the following when making an inquiry:

Orifice Size: (e.g., 32/64", 48/64", or specify in fractions like 1/2", 3/4")

Body Material: 410SS (Standard) / 17-4 PH (Optional)

Liner Material: Tungsten Carbide (Standard) / Ceramic (Optional)

Surface Treatment: Standard / QPQ Treated (Optional)

Quantity: (Minimum order: 1 piece)

Destination Port: (To calculate freight cost)

Orifice size selection specify the required size in 1/64" increments (e.g., "32/64" = 1/2", "48/64" = 3/4").

Packaging & Shipping

Packaging: Standard export carton / wooden case (customized packaging available upon request)

Shipping: Worldwide delivery by express courier (DHL/FedEx/UPS), by air or by sea.

Incoterms: EXW, FOB, CIF flexible terms available

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