The products of JM -Valu Oy are manufactured in accordance with a quality and environmental control system that complies with the ISO 9001:2015 and ISO 14001:2015 standards and is certified by Bureau Veritas Certification number: FIHSK8898372AB
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Threads of couplings with female threads are straight R-pipe threads.
We have paid special attention to the crystal structure of our couplings. Thanks to our own casting methods / moulding techniques, the crystal structure of our products can be tailored to make our products really tough and durable and, therefore, also very safe to use. In a test by the VTT Technical Research Centre of Finland, our couplings remained undamaged and still leak-proof at a pressure of 75 bar.
Our couplings have been tested by VTT Expert Services Oy, in accordance with chapter F7 of standard SFS-EN 671-1 (VTT - S - 05218-15).
All JM-Valu couplings are immediately available as stock items.
| Claw distance | Thread size |
| 50 (68mm) | ¾ " |
| 50 | 1 " |
| 50 | 1 ¼" |
| 50 | 1 ½ " |
| 50 | 2 " |
| 50 | 2 ½ " |
| 80 (105,5 mm) | 2 " |
| 80 | 2 ½ " |
| 80 | 3 " |
| 80 | 4 " |
| (144 mm) | 2 " |
| 100 (Suction / pressure with a seal) | 3 " |
| 100 (Suction / pressure with a seal) | 4 " |
| 100 (Suction / pressure with a seal) | 4 ½ " |
Since, along with high quality products, a good, fast and smooth service is a cornerstone of our operations, we have sought to strengthen our group by investing in production equipment that are central to our activities.
In addition to our fire couplings, we also manufacture casts in the role of a subcontractor.
We can utilise our own moulding design and manufacture service to develop new products, sometimes within only a few days.
Our product range also contains other products, other than domestic standard fire couplings, such as Russian Gost- couplings.
Top quality fire couplings straight from manufacturer.