In the sewage system we use two main connecting standards:
- EN 1092-1 - for steel collars
- EN 1092-2 - for cast iron collars
The difference between them in the installation is small and does not matter when connecting one with another. It is important to maintain the compatibility of PN nominal pressure for collars because they determine the amount and spacing of holes for the screws on the diameter.
The table below presents typical connections and their diameters:
|
Pressure |
PN6 |
PN10 |
PN16 |
||||||
|
Diameter |
Bolts |
Bolts |
Bolts |
||||||
| Dn | Quantity / thread / spacing | Quantity / thread / spacing | Quantity / thread / spacing | ||||||
|
DN15 |
4 |
M10 |
55 |
4 |
M12 |
65 |
4 |
M12 |
65 |
|
DN20 |
4 |
M10 |
65 |
4 |
M12 |
75 |
4 |
M12 |
75 |
|
DN25 |
4 |
M10 |
75 |
4 |
M12 |
85 |
4 |
M12 |
85 |
|
DN32 |
4 |
M12 |
90 |
4 |
M16 |
100 |
4 |
M16 |
100 |
|
DN40 |
4 |
M12 |
100 |
4 |
M16 |
110 |
4 |
M16 |
110 |
|
DN50 |
4 |
M12 |
110 |
4 |
M16 |
125 |
4 |
M16 |
125 |
|
DN65 |
4 |
M12 |
130 |
4/8 |
M16 |
145 |
4/8 |
M16 |
145 |
|
DN80 |
4 |
M16 |
150 |
8 |
M16 |
160 |
8 |
M16 |
160 |
|
DN100 |
4 |
M16 |
170 |
8 |
M16 |
180 |
8 |
M16 |
180 |
|
DN125 |
8 |
M16 |
200 |
8 |
M16 |
210 |
8 |
M16 |
210 |
|
DN150 |
8 |
M16 |
225 |
8 |
M20 |
240 |
8 |
M20 |
240 |
|
DN200 |
8 |
M16 |
280 |
8 |
M20 |
295 |
8 |
M20 |
295 |
|
DN250 |
12 |
M16 |
335 |
12 |
M20 |
350 |
12 |
M24 |
355 |
|
DN300 |
12 |
M20 |
395 |
12 |
M20 |
400 |
12 |
M24 |
410 |