Suitable for processes involving dirty fluids, high viscosity, and high solid content, particularly where high heat transfer performance is required, such as tower bottom heavy oil coolers, high-pressure steam generators in hot high-pressure separators, and slurry bed residue hydrotreating units.

Under extreme pressure conditions, conventional bolted flange connections become large and heavy, while bolts may experience stress fatigue due to repeated thermal expansion and contraction, increasing the potential risk of leakage. The Breech Lock mechanism resolves these challenges by adopting a spiral threaded locking structure, providing a secure and reliable closure design.