DURAN® Single-way Stopcock, with PTFE key
- Manufactured from borosilicate glass 3.3 and PTFE
- Polished shut-off valve sleeve with PTFE valve plug for grease-free operation
- The 3-part tap safety catch secures the tap plug in the tap sleeve.
- With retaining device
- Taper 1:10
- Glass articles for further processing
Products

| Catalog No | Stopcock (NS) | Bore (mm) | Diameter d (mm) | Wall Thickness s (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286412609 | 12.5 | 2 | 8 | 1.5 | 50 | Find a distributor |
| 286412806 | 12.5 | 2.5 | 8 | 1.5 | 50 | Find a distributor |
| 286413408 | 14.5 | 2.5 | 9 | 1.5 | 50 | Find a distributor |
| 286413605 | 14.5 | 4 | 10 | 1.5 | 50 | Find a distributor |
| 286413802 | 18.8 | 4 | 10 | 1.5 | 25 | Find a distributor |
| 286414207 | 18.8 | 6 | 13 | 1.5 | 25 | Find a distributor |
| 286414601 | 21.5 | 6 | 13 | 1.5 | 5 | Find a distributor |
| 286414807 | 24 | 8 | 15 | 1.8 | 5 | Find a distributor |
| 286415006 | 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
DURAN® single way stopcocks complete with PTFE valve plugs allow grease free operation. The 3-part tap safety catch secures the tap plug in the tap sleeve.
Products
Products

| Catalog No | Stopcock (NS) | Bore (mm) | Diameter d (mm) | Wall Thickness s (mm) | Quantity | |
|---|---|---|---|---|---|---|
| 286412609 | 12.5 | 2 | 8 | 1.5 | 50 | Find a distributor |
| 286412806 | 12.5 | 2.5 | 8 | 1.5 | 50 | Find a distributor |
| 286413408 | 14.5 | 2.5 | 9 | 1.5 | 50 | Find a distributor |
| 286413605 | 14.5 | 4 | 10 | 1.5 | 50 | Find a distributor |
| 286413802 | 18.8 | 4 | 10 | 1.5 | 25 | Find a distributor |
| 286414207 | 18.8 | 6 | 13 | 1.5 | 25 | Find a distributor |
| 286414601 | 21.5 | 6 | 13 | 1.5 | 5 | Find a distributor |
| 286414807 | 24 | 8 | 15 | 1.8 | 5 | Find a distributor |
| 286415006 | 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
DURAN® single way stopcocks complete with PTFE valve plugs allow grease free operation. The 3-part tap safety catch secures the tap plug in the tap sleeve.
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