4-Bolt ClosuresDesigned using the same core technology as the smaller 2-12” range, the larger powerloks are more commonly used as pig launchers, scraper or cleaning closures. Vector powerlok closures have been designed for working pressures up to 15,000Psi with higher pressures available by custom design.
Four bolt closures offer highly reliable and robust sealing utilising many of the standard parts of the time proven Techlok clamp connector system.
The simplicity of the design allows customers to use the pressure rating table published in the Techlok catalogue as a pressure rating guide. If pressure ratings above the catalogue ratings are required Vector can supply an oversized closure to suit.During opening, the clamps are fully supported using a rail
system which is suitable for horizontal and vertical configuration.
Size range
Supplied in sizes from 2-24”, the 4-bolt range covers most of the common launcher sizes. Non-standard sizes can be accommodated on request. Closures can be supplied for horizontal or vertical configuration with various options including opening hinges, davits or lifting eyes and safety interlocks.
6-Bolt Closures (size 28"- 42")
In situations where you require the simplicity of a 4-bolt closure but the size of the closure is too large Vector can offer a 6-bolt closure. In assembly of large clamp connectors above 28” it is difficult to achieve even clamping force around the closure hubs. By switching to a 3-piece, clamping force is more evenly distributed and the smaller clamp segments are easier to handle onsite.
6-bolt closures are suitable in horizontal or vertical configuration. The clamp segments are retained and supported by mounting plates bolted to the rear mounting hub. These plates support the weight of the clamps as they open, to ensure ease of opening. Jacking screws are supplied to separate the segments allowing the blind to be removed. 6-piece closures are designed for pressure ratings up to 2500lbs and can be supplied with interlocks , hinges or lift eyes where required.