Double Block and Bleed (DBB) ball valves are widely used in oil and gas, petrochemical, chemical processing, and industrial pipeline systems where reliable isolation is critical. Among the various components that determine valve performance, the seat material plays a vital role in sealing efficiency, operating torque, and service life. Polytetrafluoroethylene (PTFE) has become one of the most commonly used seat materials in industrial DBB ball valves due to its excellent sealing characteristics and broad chemical compatibility.

J-VALVES manufactures 16 inch 150LB LF2 CL1 cryogenic trunnion mounted ball valves per ASTM A350 LF2, for LNG, cryogenic petrochemical & LPG pipeline service, RF/RTJ flange options, -46℃ working temperature, worldwide successful project cases, API6D & API6FA certified factory direct supply.

J-VALVES API 6FA trunnion mounted ball valves have passed rigorous fire resistance tests. Ideal for high-risk working conditions such as oil, natural gas and chemical industries, delivering reliable sealing and safety protection. Contact us for customized solutions.

In modern industrial facilities, equipment layouts are becoming increasingly compact due to space constraints, modular construction requirements, and the growing demand for efficient plant design. As a result, valve manufacturers have developed compact trunnion mounted ball valves that provide reliable shut-off performance while minimizing installation space. These valves combine the advantages of traditional trunnion-mounted designs with a reduced footprint, making them ideal for applications where available space is limited.

​Trunnion mounted ball valves are widely used in industries where high pressure, large diameter, and challenging process conditions demand reliable flow control. One critical factor in ensuring the longevity and performance of these valves in corrosive environments is the selection of suitable materials for the body, ball, seat, and stem. This article explores material options, considerations, and best practices for trunnion mounted ball valves operating in corrosive media.

J-VALVES API 6D flange trunnion ball valve adopts integral forging and DPE seat design with zero leakage and long service life. Ideal for high-pressure oil, gas, chemical and LNG industrial scenarios.

J-VALVES 10x8" Class 300 A105N pneumatic trunnion mounted ball valve complies with API 6D, ASME B16.34, API 607 and ISO 15848-1 standards. Featuring zero leakage, fire-safe, anti-static, low fugitive emission and easy inline maintenance, this customized industrial ball valve is ideal for oil & gas, petrochemical and pipeline systems.

Cryogenic Double Block and Bleed (DBB) ball valves are critical components in LNG, liquid oxygen, liquid nitrogen, and other low-temperature applications. Operating at temperatures as low as -196°C, these valves must maintain reliable sealing, structural integrity, and operational performance under extreme conditions. To ensure safety and long-term reliability, cryogenic DBB ball valves​ are subjected to rigorous testing procedures and international standards before being placed into service.

Explore J-VALVES trunnion mounted ball valves for large bore & high-pressure industrial pipelines. API 6D certified, low operating torque, true DBB double block and bleed design. Learn technical features & selection guide here.

Floating ball valves are widely used in oil and gas, petrochemical, water treatment, LNG, and industrial pipeline systems due to their reliable sealing performance and compact design. One of the most important design considerations in floating ball valve manufacturing is the valve body structure, particularly whether the body is cast or forged.