Safety-grill
Product description
The safety grill is a safety feature for installation in manhole collars. It can be installed in all of our manhole covers.
Our grates have a mesh width of 20×20 mm or 40×40 mm (on request), a wire diameter of 4mm and are spot welded in a criss-cross pattern. These grates are then welded into a support ring with diameter. The entire grate is placed on the collar loose and makes contact at the four support points. Optionally the grate can also be screwed to the collar.
The mesh width of the grates is freely selectable. If other mesh sizes than 20×20 mm are required, the grates are normally lasered from plate with a thickness of 4 mm.
Standard design
- Material: 1.4404
- Welded supports (30 x 12 x 8 mm)
- Surface unpolished, pickled
Data sheet
Safety-grill for Pressureless Dome-Cover with crossarm and Profile-Gasket
| Article No. | NW |
Mesh size [mm] |
Inside diameter neck [mm] |
Diameter grill ring [mm] |
Outside diameter grill ring [mm] |
Quantity welded supports |
Weight [kg] |
|---|---|---|---|---|---|---|---|
| 230405 | 150 | 20x20 | Ø150 | Ø10 | Ø145 |
keine, Sicke none, bead |
1,5 |
| 230575 | 200 | 20x20 | Ø200 | Ø10 | Ø195 |
keine, Sicke none, bead |
2,0 |
| 230576 | 250 | 20x20 | Ø250 | Ø10 | Ø245 |
keine, Sicke none, bead |
2,5 |
| 230577 | 300 | 20x20 | Ø298 | Ø12 | Ø293 |
keine, Sicke none, bead |
2,8 |
| 230578 | 400 | 20x20 | Ø415 | Ø12 | Ø410 |
keine, Sicke none, bead |
3,0 |
| 230579 | 430 | 20x20 | Ø430 | Ø12 | Ø425 |
keine, Sicke none, bead |
3,5 |
| 230580 | 460 | 20x20 | Ø460 | Ø12 | Ø455 |
keine, Sicke none, bead |
4,5 |
| 230581 | 500 | 20x20 | Ø505 | Ø12 | Ø500 |
keine, Sicke none, bead |
5,0 |
| 230582 | 600 | 20x20 | Ø600 | Ø14 | Ø595 |
keine, Sicke none, bead |
6,0 |
| 230583 | 700 | 20x20 | Ø700 | Ø14 | Ø695 |
keine, Sicke none, bead |
8,0 |
| 230584 | 800 | 20x20 | Ø810 | Ø14 | Ø808 |
keine, Sicke none, bead |
10,0 |
Safety-grill for 1-bar Cover
| Article No. | NW |
Mesh size [mm] |
Inside diameter neck [mm] |
Diameter grill ring [mm] |
Outside diameter grill ring [mm] |
Quantity welded supports 230409 |
Weight [kg] |
|---|---|---|---|---|---|---|---|
| 231179 | 150 | 20x20 | Ø161 | Ø10 | Ø156 | 4 | 1,5 |
| 231180 | 150 | 20x20 | Ø157 | Ø10 | Ø152 | 4 | 1,5 |
| 230559 | 200 | 20x20 | Ø211 | Ø10 | Ø206 | 4 | 2,0 |
| 230560 | 200 | 20x20 | Ø207 | Ø10 | Ø202 | 4 | 2,0 |
| 230561 | 250 | 20x20 | Ø261 | Ø12 | Ø256 | 4 | 2,5 |
| 230562 | 250 | 20x20 | Ø257 | Ø12 | Ø252 | 4 | 2,5 |
| 230563 | 300 | 20x20 | Ø311 | Ø12 | Ø306 | 4 | 2,8 |
| 230564 | 300 | 20x20 | Ø307 | Ø12 | Ø302 | 4 | 2,8 |
| 231181 | 350 | 20x20 | Ø361 | Ø12 | Ø356 | 4 | 3,0 |
| 231182 | 350 | 20x20 | Ø357 | Ø12 | Ø352 | 4 | 3,0 |
| 228267 | 400 | 20x20 | Ø411 | Ø12 | Ø406 | 4 | 3,5 |
| 230565 | 400 | 20x20 | Ø407 | Ø12 | Ø402 | 4 | 3,5 |
| 230566 | 450 | 20x20 | Ø461 | Ø12 | Ø456 | 6 | 4,5 |
| 230567 | 450 | 20x20 | Ø457 | Ø12 | Ø452 | 6 | 4,5 |
| 230568 | 500 | 20x20 | Ø511 | Ø12 | Ø506 | 6 | 5,0 |
| 230412 | 500 | 20x20 | Ø507 | Ø12 | Ø502 | 6 | 5,0 |
| 230569 | 600 | 20x20 | Ø611 | Ø14 | Ø606 | 6 | 6,0 |
| 230570 | 600 | 20x20 | Ø607 | Ø14 | Ø602 | 6 | 6,0 |
| 230571 | 700 | 20x20 | Ø707 | Ø14 | Ø702 | 8 | 8,0 |
| 230572 | 800 | 20x20 | Ø807 | Ø14 | Ø802 | 8 | 10,0 |
| 230573 | 800 | 20x20 | Ø803 | Ø14 | Ø798 | 8 | 10,0 |
| 231183 | 900 | 20x20 | Ø907 | Ø14 | Ø905 | 8 | 11,0 |
| 231184 | 900 | 20x20 | Ø903 | Ø14 | Ø898 | 8 | 11,0 |
| 231185 | 1000 | 20x20 | Ø1003 | Ø14 | Ø998 | 10 | 12,0 |
Safety-grill for Round Pressure Cover
| Article No. | NW |
Mesh size [mm] |
Inside diameter neck [mm] |
Diameter grill ring [mm] |
Outside diameter grill ring [mm] |
Quantity welded supports 230409 |
Weight [kg] |
|---|---|---|---|---|---|---|---|
| 230551 | 150 | 20x20 | Ø150 | Ø10 | Ø143 | 4 | 1,5 |
| 230552 | 200 | 20x20 | Ø200 | Ø10 | Ø193 | 4 | 2,0 |
| 230553 | 250 | 20x20 | Ø250 | Ø12 | Ø243 | 4 | 2,5 |
| 230554 | 300 | 20x20 | Ø300 | Ø12 | Ø293 | 4 | 2,8 |
| 230526 | 400 | 20x20 | Ø400 | Ø12 | Ø393 | 4 | 3,5 |
| 230555 | 450 | 20x20 | Ø450 | Ø12 | Ø443 | 6 | 4,5 |
| 230556 | 500 | 20x20 | Ø500 | Ø12 | Ø493 | 6 | 5,0 |
| 230527 | 600 | 20x20 | Ø600 | Ø14 | Ø593 | 6 | 6,0 |
| 230557 | 700 | 20x20 | Ø700 | Ø14 | Ø693 | 8 | 8,0 |
| 230558 | 800 | 20x20 | Ø800 | Ø14 | Ø793 | 8 | 10,0 |
| 231187 | 900 | 20x20 | Ø900 | Ø14 | Ø893 | 8 | 11,0 |
| 231186 | 1000 | 20x20 | Ø1000 | Ø14 | Ø993 | 10 | 12,0 |
