Double Block and Bleed Valve Manufacturer

In many industries like oil & gas, power generation, mining, and more, equipment is routinely exposed to some of the harshest operating conditions imaginable. From extreme temperatures and pressures to highly abrasive, corrosive, or toxic media, these severe service applications demand valve solutions that can stand up to any challenge.

That’s where double eccentric butterfly valves truly shine. Thanks to their innovative double offset design, these high-performance valves provide unparalleled reliability, sealing capabilities, and service life – even in the most brutal process environments.

Zero Leakage Despite the Toughest Conditions

At the core of the double eccentric design is the positioning of the valve disc, which is offset from both the shaft and the bore centerlines. This unique offset geometry allows the disc to lift and cam away from the seal during the opening/closing cycle, minimizing wear and ensuring bubble-tight shut-off year after year.

The result is zero leakage performance that easily handles:

• Extreme temperatures from cryogenic to 1000°F+
• Ultra-high pressures up to 2500#
• Highly viscous, abrasive, and contaminated media
• Corrosive chemical compounds like acids and caustics
• Erosive applications like mining slurries

While traditional valves would quickly degrade and start leaking, double eccentric butterfly valves maintain a tight seal through countless open/close cycles in the most punishing conditions.

Rugged Construction for the Longest Service Life

Of course, sealing performance is just one part of the story. Double offset butterfly valves also feature an exceptionally rugged construction built to withstand decades of severe service without failure. Key elements include:

1. Abrasion/Corrosion Resistant Materials 

From super duplex stainless steels and nickel alloys to ceramic/tungsten carbide coatings, materials are carefully selected based on the specific media and environment.

1. Self-Lubricating Bearings 

The innovative bearing design is permanently lubricated and sealed to reliably support eccentric shaft loads, even with solid particulates in the media stream.

1. Metal Body Construction 

Rigid cast bodies stand up to extreme pressure/temperature changes, thermal shocks, and prevent deformation that allows leaks to develop.

1. Safety Certifications 

Double eccentric butterfly valves meet the highest fire safety standards, like API 607, for use in severe conditions.

Long-Term Performance and Value

Between their robust build quality, innovative eccentric disc design, and optimized sealing geometries, double-offset butterfly valves deliver unmatched performance with a lower total cost of ownership compared to other valve types. With near-zero maintenance required, these valves provide an exceptional return on investment for severe service applications.

So whether your operations involve scorching heat, bone-chilling cold, highly abrasive slurries, or violently erosive chemicals, know that double eccentric butterfly valves are engineered specifically to thrive in harsh environments year after year. For mission-critical processes where failure is not an option, they are the clear choice.