HFT Pipestoppers® Steel Test Plugs are the perfect solution for low-pressure testing and plugging pipes, pipelines, and orifices ranging from 2 to 48″ (50 to 1200 mm) in diameter.
These durable steel plugs are designed for heavy-duty applications involving long immersion in water, higher temperatures, or contact with acidic or alkaline environments. They outperform nylon, aluminium, and inflatable plugs in such conditions.
Choose from a variety of seal options, including natural rubber, silicone, nitrile, neoprene, and Viton, to suit your specific needs. We offer single plugs and double versions for enhanced sealing capacity and stability within pipes.
Our HFT Pipestoppers® Steel Test Plugs and Stoppers are available in standard sizes for immediate delivery, conforming to Quality Standards BS8005 and BS EN752-4 for low-pressure testing and pipe sealing.
Ordering
HFT Pipestoppers® Steel Drain Plugs 0.5″ BSP Outlet
| Pipe Size Internal Diameter | Expansion Range | Min. Insertion Into Pipe | Overall Length | Maximum | Weight | ||
| Part No. | Inch | mm | mm | mm | mm | PSI | |
| PSP6038 PSP6050 PSP6060 PSP6075 PSP6085 PSP6100 PSP6115 PSP6125 PSP6145 PSP6150 |
1.5″ 2″ 2.5″ 3″ 3.5″ 4″ 4.5″ 5″ 5.5″ 6″ |
38 mm 51 mm 64 mm 76 mm 90 mm 102 mm 114 mm 127 mm 140 mm 152 mm |
37 – 50 mm 50 – 61 mm 61 – 75 mm 73 – 85 mm 84 – 100 mm 94 – 108 mm 110 – 125 mm 124 – 139 mm 138 – 150 mm 150 – 160 mm |
31.0 mm 32.7 mm 33.2 mm 34.0 mm 41.0 mm 37.5 mm 40.0 mm 37.0 mm 37.0 mm 39.7 mm |
81.5 mm 82.8 mm 80.5 mm 80.5 mm 81.0 mm 83.3 mm 83.3 mm 83.3 mm 83.3 mm 83.3 mm |
30 psi 30 psi 30 psi 20 psi 15 psi 10 psi 10 psi 10 psi 10 psi 10 psi |
0.16 kg 0.18 kg 0.26 kg 0.28 kg 0.36 kg 0.41 kg 0.58 kg 0.60 kg 0.65 kg 0.75 kg |
HFT Pipestoppers® Steel Drain Plugs 1.0″ BSP Outlet
| Pipe Size Internal Diameter | Expansion Range | Min. Insertion Into Pipe | Overall Length | Maximum | Weight | ||
| Part No. | Inch | mm | mm | mm | mm | PSI | |
| PSP7175 PSP7200 PSP7225 PSP7250 PSP7275 PSP7300 PSP7325 PSP7350 PSP7375 PSP7400 PSP7425 PSP7450 |
7″ 8″ 9″ 10″ 11″ 12″ 13″ 14″ 15″ 16″ 17″ 18″ |
178 mm 203 mm 229 mm 254 mm 279 mm 305 mm 330 mm 356 mm 381 mm 406 mm 432 mm 457 mm |
175 – 200 mm 195 – 215 mm 210 – 230 mm 245 – 260 mm 277 – 302 mm 296 – 320 mm 315 – 350 mm 340 – 385 mm 370 – 415 mm 390 – 430 mm 415 – 440 mm 448 – 495 mm |
46.0 mm 37.0 mm 58.0 mm 55.0 mm 85.0 mm 85.0 mm 85.0 mm 85.0 mm 100.0 mm 95.0 mm 95.0 mm 100.0 mm |
130 mm 130 mm 150 mm 150 mm 150 mm 150 mm 150 mm 210 mm 210 mm 210 mm 220 mm 220 mm |
7 psi 7 psi 7 psi 7 psi 7 psi 7 psi 7 psi 5 psi 5 psi 5 psi 5 psi 5 psi |
1.56 kg 1.47 kg 1.93 kg 2.55 kg 3.60 kg 3.72 kg 4.80 kg 6.54 kg 7.00 kg 8.45 kg 8.50 kg 10.6 kg |
FAQs
1. Can the HFT Pipestoppers® Steel Drain Test Plugs be used as a permanent stopper in pipes?
HFT Pipestoppers® Steel Test Plugs can be used effectively as a permanent stopper. The wings can be cropped to prevent tampering if necessary.
2. Will HFT Pipestoppers® Steel Testing Plugs and Stoppers withstand attacks from various acids, alkalis and chemicals.
Technical data sheets about the chemical resistance of different materials is available on request.
3. What if HFT Pipestoppers® natural rubber rings deteriorate in the presence of my special chemicals, gases or fluids?
The standard sealing rings provided are manufactured from natural rubber. We manufacture and stock alternative rings made from nitrile, neoprene, silicone and viton rubbers which will resist attack by many harmful products. Full details for chemical resistance of these materials is available on request.
4. What is the maximum working temperature for the HFT Pipestoppers® Steel Test Plugs?
The natural rubber rings can be used up to 80˚C (176˚F) in continuous use.
For higher temperatures, we manufacture rings made from silicone that can be used up to 300˚C (572˚F) and viton, which can be used up to 350˚C (662˚F).
Technical data sheets about the resistance of various rubbers to all temperatures and materials are available on request.
5. I have a hole to seal, where your plug won’t quite seal well enough, but the next size up is too big. Do you have any in between sizes?
HFT® manufactures special Steel Plugs made to size where required. Please contact us.
6. Can I have the plugs made as a branded product?
Yes, HFT® can have plugs made in your company name and house colours subject to quantities.
7. What pressures can the HFT Pipestoppers® Steel Test Plugs withstand?
A pressure chart for HFT Pipestoppers® Steel Testing Plugs is shown on the datasheet.
Plugs can be braced to assist in greater stability. Contact Huntingdon Fusion Techniques HFT® for details.
Note: For effective sealing, internal surfaces of cavities must be clean and dry.
Some smooth surfaces may not be effective and may need to be roughened.
Pressure ratings may be affected by poor, slippery or dirty surfaces.
