High-pressure mechanical blind closures providing safe, fast-opening piping terminations.
Conventional blind flanges require removing and re-installing up to 24 large bolts, taking hours of labor. CofferLok blind hubs are secured by our 4-bolt clamp assembly, which can be backed off and removed in minutes, speeding up line cleaning, pigging, and inspection.
CofferLok blind hubs offer up to 75% weight savings compared to a solid ANSI blind flange of the same class. This allows maintenance crews to handle closures easily without needing heavy overhead cranes or dedicated rigging setups.
Utilizing CofferLok's self-energizing metal-to-metal seal ring, our blind hubs maintain an absolute leak-free barrier under severe thermal spikes, pressure cycles, and high-consequence chemical services.
Designed for easy integration onto pressure vessels, skid nozzles, piping manifolds, and pipeline end terminations. Standardizing your headers with CofferLok blind closures saves structural support costs and simplifies tooling.
CofferLok blind hubs are forged from high-quality steel and can be customized with tap holes for pressure gauges, blowdown valves, or instrument sensors.
Perfect for volatile service lines, test manifolds, and high-frequency pig launching / receiving systems where speed and operator safety are critical.
Learn how CofferLok rapid-access blind hubs can reduce downtime in your high-frequency service systems.
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