The HFT Pipestoppers® Nylon Plugs can be supplied with a hollow shaft for screwing on standard hose connections, or for using our own fixed nipple caps, or the free nipple and cap assemblies. The smaller size plugs can be supplied with solid shafts for greater pressure testing capabilities.
Size range for the two types are:
A hollow shaft version with eleven sizes
from 0.5 to 6″ (12 to 150 mm)
A solid shaft version with five sizes
from 0.5 to 1.5″ (12 to 38 mm)
All plugs have:
Threaded central spindle, shaft or waterway onto which a top and bottom plate are mounted, with a rubber ring between them. Wing nut screws down onto the top plate which compresses the ring until the plug is sealed in the hole/cavity.
Optional rubber seals can be provided manufactured from different materials for resistance to higher temperatures or petrochemical vapours and fluids:
- Natural Rubber
Hollow shaft plugs from 0.5 to 1.5″ (12 to 37 mm) diameter have an outside thread of 8 mm and are provided with sealing caps. Sizes of 1.5″ (37 mm) and above are threaded with a 1/2″ BSP thread for the connection of industry standard nuts/hose fittings and are provided with a solid end cap seal. These plugs will provide airtight seals.
Optional end caps are available for the 1/2″ BSP threads, with fixed nipples/nozzles for hose connection or free nipples that can rotate when heavier hoses are used.
Nylon 6 is an engineered polymer which is resistant to salt water corrosion it is also resistant to many other chemicals. Along with natural rubber rings they provide a high quality leak tight seal in the selected orifice.
Where preferred, we can provide customers with coloured nylon to meet specific requirements. Company names and logos can be included on the mouldings as specials too subject to quantity.