To ensure the proper blanking off of pumps, valves, and piping sections, blanking spades are widely used. Their function is to separate a shut-off plant system from a pressurised or operational system and protect parts of systems from being subjected to higher pressures than their rated operating pressure.
Also known as paddle blanks, they can be used when hydrotesting piping systems, to offer protection to more delicate equipment such as sight glasses from high line test pressures. They’re also useful for providing an additional layer of protection during maintenance, guarding against leaking valves or negligent opening of isolation valves.
Made with a wafer style fitting, the blanking spade is sized to fit inside the bolt circle for the relevant nominal nore, and are made from stainless steel with both sealing faces formed from PTFE. If required, the easy fitting of tags is possible thanks to a hole in the handle, which is also available fully lined.
Please note we only supply PTFE lined or solid PTFE spades and blinds, we do not supply metallic blinds with serrated faces etc. Typically used in the petrochemical industry.
The dimension table below is to suit ASME 150 flange joints.
|To Suit Pipework NB||PTFE liner Thickness||ØA||B|
CRP carry most sizes in stock please give us a call to order – 01706 756 400