DURAN® Single-way Stopcock, ground and polished, without key
- Manufactured from borosilicate glass 3.3
- Ground shut-off taps without tap plug
- Fat-free working through the polished tap surface
- Taper 1:10
- Glass articles for further processing
Products

| Catalog No | Stopcock (NS) | Bore (mm) | Diameter d (mm) | Wall Thickness s (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286438005 | 10 | 1.5 | 7 | 1.5 | 10 | Find a distributor |
| 286439001 | 12.5 | 2 | 8 | 1.5 | 50 | Find a distributor |
| 286439207 | 12.5 | 2 | 8 | 2.2 | 50 | Find a distributor |
| 286439601 | 14.5 | 2.5 | 9 | 1.5 | 50 | Find a distributor |
| 286439807 | 14.5 | 4 | 10 | 1.5 | 50 | Find a distributor |
| 286440405 | 18.8 | 4 | 10 | 1.5 | 25 | Find a distributor |
| 286440602 | 18.8 | 6 | 13 | 1.5 | 25 | Find a distributor |
| 286441007 | 21.5 | 6 | 13 | 1.5 | 5 | Find a distributor |
| 286441401 | 24 | 8 | 15 | 1.8 | 5 | Find a distributor |
| 286441607 | 29.2 | 10 | 18 | 2.5 | 5 | Find a distributor |
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
Ground and polished DURAN® single way stopcocks are shut-off taps which are combined with PTFE valve plugs to allow grease free operation.
Products
Products

| Catalog No | Stopcock (NS) | Bore (mm) | Diameter d (mm) | Wall Thickness s (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286438005 | 10 | 1.5 | 7 | 1.5 | 10 | Find a distributor |
| 286439001 | 12.5 | 2 | 8 | 1.5 | 50 | Find a distributor |
| 286439207 | 12.5 | 2 | 8 | 2.2 | 50 | Find a distributor |
| 286439601 | 14.5 | 2.5 | 9 | 1.5 | 50 | Find a distributor |
| 286439807 | 14.5 | 4 | 10 | 1.5 | 50 | Find a distributor |
| 286440405 | 18.8 | 4 | 10 | 1.5 | 25 | Find a distributor |
| 286440602 | 18.8 | 6 | 13 | 1.5 | 25 | Find a distributor |
| 286441007 | 21.5 | 6 | 13 | 1.5 | 5 | Find a distributor |
| 286441401 | 24 | 8 | 15 | 1.8 | 5 | Find a distributor |
| 286441607 | 29.2 | 10 | 18 | 2.5 | 5 | Find a distributor |
Specification
Specifications
Product specifications are found on the product detail pages. Click on the product catalog number in the table above to view the individual product specifications.
Product Overview
Product Overview
Ground and polished DURAN® single way stopcocks are shut-off taps which are combined with PTFE valve plugs to allow grease free operation.
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