Low Pressure Purge Plugs
Low Cost, In-expensive Nylon Plugs – Use as Purge Plugs to block lines when welding or as a low pressure stopper for liquids or gas.
Available in Sizes 1/2″ to 6″ – For larger sizes refer our webpage for Aluminum Plugs
Description
An Easy, Simple, Positive Seal! Nylon Plugs are suitable for a myriad of applications and range from 0.5 to 6″ (12 to 150 mm). For larger sizes up to 36″ please refer our webpage for Aluminum Plugs
Use as Purge Plugs to block lines when welding or as a low pressure stopper for liquids or gas. When other purge systems or purge film cannot be used to make a suitable barrier for purging pipes, tubes or fittings, the Nylon Plugs™ may offer a satisfactory option .
They are mostly used for leak testing of pipework fabrications, or simply to prevent the ingress of dirt, vermin or other unwanted material. However, there are over 100 different applications for these plugs. HFT Pipestoppers® Nylon Plugs are constructed from injection-molded, high-grade nylon components and rubber rings. They have the advantages of being light, non-rusting, low cost, provide very fast and effective sealing, easy to expand and can be dismantled for cleaning purposes. Nylon 6 is an engineered polymer which is resistant to salt water corrosion as well as to many other chemicals.
Effective sealing is simple, insert the plug into a pipe or cylindrical opening and tighten the wing nut clockwise. The rubber ring will expand and provide a positive seal. To remove simply reverse the process. Testing and sealing of all pipes, pipe joints and pipework assemblies can be done with the HFT Pipestoppers® Nylon Plugs.
Other applications include sealing holes in castings, tanks, other assemblies for spraying and blasting to protect the insides, maintenance and installation of swimming pool and water spa pipework, for use as ‘Scupper Plugs’ in ships, for telecommunication pipelines and pipework up to 6″, as radiator test plugs for cars and commercial vehicles, as heat exchanger tube plugs, etc.
The standard seals are made from natural rubber. Other available options are: Natural Rubber, Silicone, Nitrile, Neoprene & Viton.
High Temperature Resistant Plugs: Buy Optional Silicone Seals for High temperature resistance. Nylon Plugs with Silicon Seals have a temperature rating of 250 Deg C or 482 Deg F.
Chemical Resistant Plugs: Buy Optional Viton Seals for High Chemical Resistance. Nylon Plugs with Viton Seals are available that offers excellent resistance to many chemicals and are also rated to 220 Deg C or 428 Deg F.
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 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:
HFT Pipestoppers® Nylon Plugs Solid Stem
| PART Nº | DESCRIPTION | PRODUCT SIZE | SIZE RANGE | HEIGHT OF SEAL | WEIGHT | |
| PSP1013 PSP1019 PSP1025 PSP1032 PSP1038 | Solid Stem Small Bore Plug Solid Stem Small Bore Plug Solid Stem Small Bore Plug Solid Stem Small Bore Plug Solid Stem Small Bore Plug | 1/2″ 3/4″ 1″ 1 1/4″ 1 1/2″ | 13 mm 19 mm 25 mm 32 mm 38 mm | 14 – 19 mm 18 – 25 mm 24 – 36 mm 30 – 44 mm 36 – 51 mm | 20 mm 23 mm 25 mm 31 mm 31 mm | 10 gms 15 gms 20 gms 35 gms 45 gms |
HFT Pipestoppers® Nylon Plugs Hollow Shaft with 8 mm Connection
| PART Nº | DESCRIPTION | PRODUCT SIZE | SIZE RANGE | HEIGHT OF SEAL | WEIGHT | |
| PSP113H PSP119H PSP125H PSP132H PSP138H | Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug | 1/2″ 3/4″ 1″ 1 1/4″ 1 1/2″ | 13 mm 19 mm 25 mm 32 mm 38 mm | 13 – 19 mm 18 – 26 mm 23 – 36 mm 30 – 43 mm 36 – 50 mm | 20 mm 23 mm 25 mm 31 mm 31 mm | 10 gms 15 gms 20 gms 35 gms 45 gms |
HFT Pipestoppers® Nylon Plugs Hollow Shaft with 1/2″ BSP Connection
| PART Nº | DESCRIPTION | PRODUCT SIZE | SIZE RANGE | HEIGHT OF SEAL | WEIGHT | |
| PSP2038 PSP2050 PSP2063 PSP2075 PSP2085 PSP2100 PSP2115 PSP2125 PSP2150 | Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug Hollow Shaft Small Bore Plug | 1 1/2″ 2″ 2 1/2″ 3″ 3 1/2″ 4″ 4 1/2″ 5″ 6″ | 38 mm 51 mm 64 mm 76 mm 90 mm 102 mm 114 mm 127 mm 152 mm | 36 – 53 mm 49 – 64 mm 63 – 76 mm 73 – 88 mm 82 – 98 mm 92 – 110 mm 110 – 130 mm 119 – 142 mm 145 – 164 mm | 31 mm 31 mm 31 mm 31 mm 31 mm 35 mm 35 mm 37 mm 37 mm | 70 gms 80 gms 130 gms 140 gms 148 gms 160 gms 216 gms 280 gms 390 gms |
HFT Pipestoppers® Nylon Plug Accessories
| PART Nº | DESCRIPTION |
| PSPS1002 PSPS1001 PSPS1019 | Nipple Cap with Washer 1/2″ BSP 1/2″ BSP swivel nut with free tail piece and washer Small Bore Nipple Caps (8 mm nominal) |
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.
Some examples of Nylon Plugs used as Weld Purge Plugs
Some examples of Nylon Plugs used as Low Pressure pipestoppers
