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In industries where reliability is paramount—such as petrochemical refining, power generation, and cryogenic LNG transport—valves must deliver impeccable performance under severe temperatures and pressures. DBVValve’s SS321 Triple Offset Butterfly Valve sets a new standard by combining advanced metallurgy with innovative design to overcome the most challenging environments.
Engineered for Extreme Environments
This valve represents a breakthrough in precision engineering, overcoming the limitations found in conventional butterfly valves. Its design is specifically optimized to ensure zero leakage and long-term durability under the most demanding conditions.
SS321 Stainless Steel Body:
Stabilized with titanium, the SS321 body offers exceptional resistance to oxidation and intergranular corrosion at temperatures reaching up to 1500°F (816°C). This makes it particularly effective in applications involving cyclic thermal stresses, such as flare gas systems or exhaust gas recirculation.
Metal-to-Metal Seat with Stellite 6 Coating:
Both the disc and the seat are coated with Stellite 6—a robust cobalt-chromium alloy that achieves a hardness between HRC 45–60. This high-hardness coating ensures a bubble-tight seal even under ANSI Class 1500 pressures, as confirmed by API 598 testing.
Fire-Safe Design:
Meeting API 607/6FA standards, the valve maintains structural integrity during fire exposure (up to 30 minutes at 1400°F/760°C), a critical feature for hydrocarbon processing and offshore platforms.
The valve’s design incorporates three distinct offsets that work together to reduce friction and wear, ensuring decades of reliable service:
First Offset:
The shaft is strategically positioned behind the sealing point to enhance the sealing force as system pressure increases.
Second Offset:
By offsetting the shaft axis from the pipeline’s centerline, the design reduces required actuation torque by 40% compared to traditional double-offset models.
Third Offset:
A conical alignment between the disc and seat creates a cam-like action, virtually eliminating mechanical friction during operation. This innovative geometry also promotes self-cleaning when handling particulate-laden media like slurry or fly ash.
Industry Standards:
The valve complies with ASME B16.34, API 609, ISO 5211, and NACE MR0175 standards for sour service (H₂S environments).
Versatile Sizing Options:
Available in sizes from 2" to 48" (DN50–DN1200) with wafer, lug, or butt-weld ends—and customizable face-to-face dimensions per MSS SP-72—this valve fits a wide range of pipeline applications.
Smart Actuation:
IoT-enabled actuators offer real-time torque monitoring and predictive maintenance alerts, significantly reducing unplanned downtime by up to 70%.
Torque-Seal Mechanism:
Instead of relying on traditional positional sealing, the valve’s triple offset design uses system pressure to create a contact surface pressure that locks the seal, ensuring leak-free operation even under vacuum conditions.
Elimination of Elastic Deformation:
The rigid metal seat design avoids the pitfalls of elastic deformation, maintaining seal integrity for over 100,000 operational cycles.
Full-Bore Flow Design:
With a 100% bore diameter, the valve minimizes turbulence and reduces pressure drop by 35% compared to reduced-port alternatives. For instance, in a 24" gas pipeline, this efficiency can result in annual compressor energy savings of approximately $18,000.
Reduced Actuation Torque:
The optimized geometry allows for low-torque operation, making it possible to use smaller, more cost-effective actuators.
Cryogenic Performance:
Extended bonnet designs enable the valve to perform reliably in ultra-low temperatures (down to -320°F or -196°C), a vital feature for LNG storage and transfer.
Abrasion Resistance:
Tungsten carbide coatings protect the valve from erosive media, such as catalyst particles in FCC units, ensuring long-term performance even in abrasive environments.
Petrochemical Refinery (Texas):
In a sour gas processing facility (15% H₂S at 1200 PSI), replacing traditional valves with DBVValve’s SS321 models reduced replacement frequency by 70%, saving approximately $1.2M annually. Post-installation inspections revealed a corrosion rate of less than 0.01 mm per year.
LNG Terminal (Norway):
In cryogenic LNG transfer at -260°F (-162°C), the valve’s design eliminated seat contraction leaks. Over five years, the terminal experienced zero incidents and an 18% reduction in boil-off gas losses, translating to energy recovery savings of around $2.4M.
Coal-Fired Power Plant (Germany):
The hardened Stellite seat extended the valve’s service life to over 4 years in flue gas desulfurization systems, reducing parts replacement costs by $450,000 and saving 1,200 labor hours annually.
Offshore Oil Rig (Brazil):
For high-pressure seawater injection at 2500 PSI, the tungsten carbide-coated disc exhibited zero wear over three years, avoiding unplanned shutdown costs estimated at $650,000.
Extensive Field Expertise:
With over 20 years of operational experience in challenging environments—from North Sea oil rigs to Arctic pipelines—DBVValve brings proven reliability to every installation.
Comprehensive Support:
From advanced CFD simulations for flow optimization to hands-on installation training, DBVValve provides end-to-end support to ensure optimal performance.
Global Certifications and Sustainability:
Certified under ATEX, PED 2014/68/EU, and SIL 3 (IEC 61508), and built using 100% recyclable materials in an ISO 14001-certified facility, DBVValve prioritizes both safety and environmental responsibility.
Secure your operations with a valve that delivers unparalleled performance under extreme conditions. Contact us at info@dbv-armaturen.com to:
