The Cornerstone FB2/3 floating ball valve provides flexible severe-service isolation for demanding industrial processes. Cornerstone offers the valve with two-piece or three-piece body construction and soft or metal seating.
The FB2/3 uses a floating ball design with a rigid bolted body. Pre-loaded, pressure-assisted seating helps maintain uniform operating torque and supports tighter shut-off as pressure increases. Cornerstone can configure the valve for uni-directional or bi-directional service.
Its broad operating range makes the FB2/3 suitable for demanding temperature conditions. Configurations support cryogenic temperatures down to -320°F and high-temperature service up to +1500°F.
ANSI sizes range from 1/2 inch through 24 inches. API sizes range from 1-13/16 inches through 4-1/16 inches. Pressure ratings extend from ANSI Class 150 through 4500 and API 2000 through 20000.
Cornerstone also offers several seating and leakage options. Soft-seated configurations support bubble-tight shut-off. Metal-seated versions can meet FCI 70.2 Class V and VI requirements.
Engineered stem and fugitive emissions seals can meet API 622 and API 641 requirements. Additional options include secondary and tertiary stem seals, steam purge ports, ball coatings, CRA overlays, and fire-safe configurations.
Material choices include carbon steel, stainless steel, duplex, chrome molybdenum, nickel-based alloys, and titanium-based alloys. Other exotic alloys are available upon request.
Westech Industrial can help review pressure, temperature, process media, materials, valve size, seating, leakage class, end connections, and actuation requirements. Our team can also support valve service, maintenance, troubleshooting, and repair requirements.
For larger projects, Westech can incorporate Cornerstone floating ball valves into custom-fabricated industrial systems. These projects can combine valves with piping, instrumentation, controls, skids, enclosures, buildings, and other supporting equipment.
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Description
Product Features
Floating Ball Design for Reliable Isolation
The FB2/3 uses a floating ball design for process isolation across a wide range of applications.
Process pressure helps push the floating ball toward the downstream seat. This arrangement works with Cornerstone’s pressure-assisted seating system to support tighter sealing.
The design also provides a relatively straightforward internal configuration for severe-service applications.
Pre-Loaded, Pressure-Assisted Seating
Cornerstone pre-loads the FB2/3 seating system to help maintain uniform operating torque.
Process pressure then assists the seat to strengthen the seal. This combination supports consistent valve operation as pressure conditions change.
Cornerstone can configure the seating arrangement for uni-directional or bi-directional service, depending on project requirements.
Soft-Seated and Metal-Seated Configurations
Customers can choose soft-seated or metal-seated FB2/3 designs.
Soft seating supports applications requiring bubble-tight shut-off. Cornerstone specifically identifies tight shut-off applications such as oxygen service among the FB2/3 applications.
Metal seats provide another option for demanding temperature, pressure, or process conditions. Metal-seated configurations can meet FCI 70.2 Class V and VI requirements.
This flexibility allows customers to match the seating technology to their process conditions.
Cryogenic to High-Temperature Service
The FB2/3 covers a broad temperature range.
Cryogenic configurations can operate down to -320°F. At the opposite end, high-temperature versions can support temperatures up to +1500°F.
Therefore, the same product family can address applications ranging from LNG service to demanding elevated-temperature processes.
Two-Piece or Three-Piece Body Construction
Cornerstone offers the FB2/3 with either two-piece or three-piece body construction.
This choice gives project teams additional flexibility when matching valve construction to the application.
Both designs use a rigid bolted body for strength and versatility.
Fire-Safe Body and Bonnet Sealing
The FB2/3 can use spiral-wound graphite or metal-to-metal body and bonnet sealing.
Cornerstone designed these sealing arrangements to provide reliable, fire-safe performance.
Fire-safe configurations are also available as part of the broader FB2/3 option package.
Engineered Stem and Fugitive Emissions Seals
Cornerstone can engineer stem and fugitive emissions sealing according to customer specifications.
The valve can meet API 622 and API 641 requirements. Secondary and tertiary stem seals are also available for applications requiring additional sealing protection.
This flexibility can support applications where fugitive emissions control plays an important role.
Wide Pressure Capability
The FB2/3 supports demanding pressure conditions.
ANSI/ASME pressure classes extend from Class 150 through 4500. API ratings extend from 2000 through 20000.
This broad range allows the valve family to serve many industrial process and upstream applications.
Multiple End Connection Options
Available end connections include socket weld, butt weld, raised face, RTJ, and hub ends.
Connection standards include ANSI B16.5, API 6A, and ANSI B16.25.
These options give engineers more flexibility when integrating the valve into different piping systems.
Frequent Actuation Capability
Cornerstone identifies frequent actuation as a suitable application for the FB2/3.
The pre-loaded seating system helps maintain uniform torque during operation. A rigid bolted body also provides structural strength.
For automated service, customers can select pneumatic, hydraulic, or electric actuation.
Ball Coatings and CRA Overlays
Cornerstone offers various ball coatings for demanding services.
CRA overlays are also available where process conditions require additional corrosion-resistant surfaces.
These options help tailor the valve to aggressive media and challenging operating environments.
Broad Material Selection
Available FB2/3 materials include carbon steel, stainless steel, duplex, chrome molybdenum, nickel-based alloys, and titanium-based alloys.
Cornerstone can also provide other exotic alloys upon request.
This range supports applications involving corrosion, extreme temperatures, high pressures, and specialized process media.
Steam Purge Options
Steam purge ports are available for the FB2/3.
These ports can support process or maintenance requirements where operators need additional control over material around the valve internals.
Manual or Automated Actuation
Cornerstone offers several ways to operate the FB2/3.
Available actuation includes manual, pneumatic, hydraulic, and electric options.
Westech can help review operating conditions and actuator requirements for a complete valve configuration.
Applications
Applications
The Cornerstone FB2/3 floating ball valve supports a range of demanding industrial applications.
- Chemical processing
- Refining
- Frequent actuation service
- Tight shut-off applications
- Oxygen service
- Chlorine service
- LNG service
- Full cryogenic applications
- Low-temperature applications
- Hydrogen service
- Zero-emissions applications
- Compression gas applications
- Upstream oil and gas service
Cornerstone identifies these applications specifically for the FB2/3 product family.
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Cornerstone Valve designs and manufactures specialty ball valves for severe-service industrial applications. Its focus on custom-engineered, fit-for-purpose solutions helps address demanding pressure, temperature and process conditions.
