At Stattin Stainless we stock a wide range of stainless steel BSP fittings and stainless steel NPT fittings that is sure to suit your needs, If you have any further questions, feel free to contact us today!
Back to Stainless Steel Fittings. Providing a dependable supply of quality stainless steel fittings and products across Australia since Perhaps someone can answer a thread question for me. Services range from very low to reasonably high pressure within the Class limit. I am working for a group who has used BSP for many years, and my background from the oil industry is NPT - which I am trying to introduce. I would like to find firm evidence which is better for sealing - especially in long term service.
Perhaps the advantages and disadvantages of each would be a good start. Thanks TMOC. Long term service? Let's find an example where long term service without maintenance is absolutely required. One, the nuclear industry. Two, the automobile industry. With the exception of gage fittings and small casting plugs, neither. Tapered thread joints induce stresses in the pipe, fittings and flanges that do not contribute to containing the process, and are just sitting there waiting to cause a problem should the opportunity arise.
Long term, opportunities are guaranteed. So, which tapered pipe thread is least awful? If they were working for you, NPT would be an easier sell. Consider also the group dynamics; changing to NPT would force many people to learn something new, whereas you accepting BSPT would require retraining only one person. The "retraining" costs include not just the effort of learning about the other stuff, but the cost of stupid errors, e. Those costs are real, and could be substantial; who pays for them?
You must have bigger battles to fight. Don't even think about it! Parallel threads, with 'O' ring or bonded seals, or compression joints, are for engineers. Cheers - John. ApC2Kp - Merchant couplings are thread protectors, and nothing more.
Guys, Thanks to everyone for their input. Wow - Set off a firecracker here didn't I! But when you have a machine down, the last thing you want to do is take out your measuring tools and charts to find what threads are on your solenoid valve.
Do you know where your equipment was manufactured? You may need to reference the user manual to find this information or contact the original equipment manufacturer. Does your product require fittings? It may be possible to simply replace these fittings to make them compatible with a PT threaded product. For dire situations, use PFTE thread seal tape. We recommend this as a last resort though. Thread types can be a little overwhelming to grasp at first. However, having the right tools can a make a world of a difference.
We hope this guide is useful and insightful. If you have any questions, feel free to contact us or simply leave a comment below. Lastly, make sure to take all this valuable information with you in our downloadable Thread Identification Guide.
Close menu. Log In Create Account. Blog Menu. Pitch Gauge — A pitch gauge measures the threads per inch. Male Thread. Female Thread. They were established as a standard by the American National Standard Pipe Thread, commonly referred to as the national pipe thread standards. NPT is one of the U.
The thread, as defined by the ISO standard, uses Whitworth standard threads, and is among a number of technical standards for screw threads that has been adopted internationally for interconnecting and sealing pipes and fittings. It has been adopted as standard in plumbing and pipe fitting nearly worldwide.
The necessity to standardize screw threads began in earnest with the onset of the Industrial Revolution in the early nineteenth century. Standardization was needed to facilitate compatibility between different manufacturers and users. The U.
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