API-6A and API-6D Industrial Valves

The American Petroleum Institute (API) defines various valve standards for oil and gas applications. While many API standards exist, 6A and 6D are two concerning valve design.

Aligning with these standards is critical for compliance and protecting the environment in these petroleum applications.

Industrial API-6A and API-6D Valve Distributors

MSEC, Inc. offers industrial valves for oil and gas applications. These include:

  • API-6A valves: API-6A valves meet design and performance requirements for wellhead and Christmas tree equipment for flow and pressure control. In addition to covering many valve types, this standard also includes specifications for fittings, connectors and flanges.
  • API-6D valves: Meet the materials, pressure ratings, design criteria, dimensions and testing requirements for pipeline valves set by the API. These industrial valves are designed for the distribution and transmission of oil, gas and other hydrocarbons.

Many valve types can meet API-6A and 6D standards, including trunnion-mounted ball, pressure seal and more. MSEC distributes API-6A and API-6D valves from leading manufacturers in the industry. These products from OMB/Vogt, Chaoda USA, Tiger Valve Company and Williams Valve Corporation feature cutting-edge designs and industry-leading construction that support success for operations of all sizes.

Size and Pressure Options

API-6A and 6D valves come in various sizes to suit diverse applications. For example, Duo-Chek provides API valves ranging from 2 inches to 88 inches. Pressure ranges also vary widely to suit different uses.

Quality Materials

The manufacturers MSEC carries create API-6A and 6D valves from high-quality materials, such as carbon steel and cast iron. These materials offer durability for long-term use. All materials meet or exceed API standards.

Williams Valve Corp. Ball Valves

Why Purchase From MSEC for API-6A and 6D Valves?

Since 1978, MSEC has been a reputable distributor of leading valve products for API-6A and 6D applications. Their team offers a range of benefits to consumers.


MSEC provides one of the most extensive product lines in the industrial process equipment industry. They only provide products they can back up. With products from the market’s most reputable brands, operations can source high-performance valves with competitive prices to provide maximum value.


The MSEC team offers decades of industry experience. Their experts provide extensive product knowledge to identify the right solutions for different applications and implement them for success. MSEC can install, start up, repair and commission. With experience in engineering and access to technical resources, they can also design and manufacture custom products.


When working with MSEC, customers access a committed team founded on long-term partnerships. Through responsive and proactive customer service, they provide unmatched solutions that exceed expectations, regardless of project scale.

Find API-6A and API-6D Valves From MSEC

MSEC’s versatile selection of API valves supports customers with stringent industry regulations. While manufacturers design their products in accordance with these standards, selecting the right valves within these designs is critical to success. The experts at MSEC deliver the product knowledge and industry expertise to guide purchasing decisions.

Request a quote today for more information on API-6A and API-6D valves and products.


Call MSEC today for peak process performance!