DBB VALVE PDF

Committed to Quality. Committed to Customer Satisfaction. Our commitment to quality has allowed us to build strong relationships with customers. We design, manufacture and deliver innovative and high quality valves, which are used worldwide in critical applications. Our design and manufacturing process adheres to the most stringent quality standards of safety and efficiency, which has earned us the ISO certification. Our quality control process is designed to ensure that all our products meet the international standards.

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DBB Valves Double Block and Bleed Valves At Hy-Lok, we create value for our clients by engineering high quality double block bleed valves customized to match individual process requirements. Our compact, integrated designs and accurate, rugged construction provide a high reliability solution for complex multiple instrument valve systems. Able to tolerate temperatures from Our unique design approach achieves the highest level of seal integrity and optimal process compatibility. We create flexible configurations with a wide variety of end connections, body types, and valve technologies for critical piping applications including instrument isolation; pressure, level and flow measurement; instrument drain; chemical injection; and sampling.

Constructed primarily from stainless steel, a variety of material options for ball seat, trim, stem, and end connector o-rings are available to accommodate specific process conditions. We manufacture our valves under the strict controls of our ISO and ASME certified quality assurance program to ensure process integrity.

In addition to sourcing only premium quality materials, our Heat Code Traceability system provides technical documentation verifying that raw materials meet all code requirements. We pressure test each valve to withstand client-specific plant conditions and repeatedly measure products for dimensional accuracy at all critical points in the production cycle. For more information about our custom valve manufacturing capabilities, please review the table below.

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DOUBLE BLOCK & BLEED VALVES

IN Type - Maximum Pressure 6,psi 10,psi available as an option. Maximum Temperature C C available as an option. Heavy duty Firesafe versions are available. ID Type - Maximum Pressure 6,psi 10,psi available as an option. Comes with a Metal to metal seated needle valve and Soft seated ball valve.

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How It Works: Double Block-and-Bleed and Double Isolation-and-Bleed

DBB Valves Double Block and Bleed Valves At Hy-Lok, we create value for our clients by engineering high quality double block bleed valves customized to match individual process requirements. Our compact, integrated designs and accurate, rugged construction provide a high reliability solution for complex multiple instrument valve systems. Able to tolerate temperatures from Our unique design approach achieves the highest level of seal integrity and optimal process compatibility. We create flexible configurations with a wide variety of end connections, body types, and valve technologies for critical piping applications including instrument isolation; pressure, level and flow measurement; instrument drain; chemical injection; and sampling.

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Welcome to YDB VALVES LLP

Differences in definitions and terms are important when it comes to which valve capability to use in what type of system. Because DBB and DIB have become such generic terms in the industry, it is important to take into consideration the application, media, and various environmental challenges when choosing the appropriate solution and valve type. In contrast, OSHA describes DBB as "the closure of a line, duct, or pipe by closing and locking or tagging two inline valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves. API allows DBB valves to be one single valve with two unidirectional seats, while the OSHA standard can only be achieved with two separate valves with a method to bleed pressure in between. There are some valves that utilize a twin-valve design. By combining two valves into one body, a twin-valve design reduces weight and potential leaks paths while meeting the OSHA requirements for double block and bleed. A bleed valve is used to drain the spool and verify seal integrity.

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What is Double Block and Bleed Valves ?

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