What a fitting profile means
In press systems, the fitting is pressed with the jaw of a press tool. The jaw has a specific contour, and the fitting must have an end with the same contour for the pressed joint to be tight. The most common contours in copper installations are V and M. The contour marking is on the jaw, so the installer usually knows which profile they work with.
For a wholesaler this means one simple thing: a customer with V jaws will buy V fittings, and a customer with M jaws will buy M fittings. Two profiles mean two separate stock levels of the same fitting.
Which Besco lines come in which profile
| Line | Profile | Diameters | Specifications | Approvals |
|---|---|---|---|---|
| Gutpress Copper · water | V | 12–54 mm | 16 bar, −10…110 °C | DVGW, KIWA, WRAS, RISE |
| Gutpress Copper · water | M | 12–108 mm | 16 bar, −10…110 °C | DVGW, WRAS, RISE |
| Gutpress Copper · gas | V and M | 15–35 mm | 5 bar, −20…70 °C | DVGW, INiG |
| Gutpress Carbon Steel | M | 12–108 mm | 16 bar, −10…110 °C | – |
| INOX 316L, Stainless Steel | M | 15–168,3 mm | 16 bar, −10…110 °C | DVGW, WRAS |
| INOX 304, Stainless Steel | M | 15–108 mm | 16 bar, −10…110 °C | CE |
| Gutpress Ball Valves V and M | V and M | 15–54 mm | 16 bar, −10…110 °C | DVGW, WRAS |
Copper to EN 1254-7. Diameters above 54 mm (up to 108 mm) are in the M profile, both in copper and in carbon steel.
Can M be pressed with a V jaw?
According to the Besco 2026 catalogue, M profile fittings can also be pressed with a V jaw in the range DN12–28. In these diameters, one stock of M fittings will serve customers with both types of jaw. Above 28 mm, stick to the profile that matches the jaw.
How to set stock levels at a wholesaler
- Small diameters (12–28 mm): this is where turnover is highest. Ask your regular customers which jaws they use and set the V to M ratio based on their answer.
- Large diameters (35–108 mm): above 54 mm Besco offers only the M profile, so it covers larger projects and boiler rooms.
- Gas: gas lines are separate items (GPG and the 7000 series). They are not replaced with fittings from the water lines.
- Full packs: each item in the catalogue has two bulk packaging options (bag and box), e.g. elbow GP5001 15 mm: 10 and 120 pieces.
How to order
You will find all items in the V profile finder and the M profile finder. Add items to the list, set quantities in boxes or bags and send it for a quote.
Data source: Besco Fittings & Connectors 2026 catalogue. As of 2026.