| Materials | Brass body, ball and rod |
| Seals | PTFE ball seal; NBR O-Ring |
| Control element | Painted steel lever |
| Thread | DIN 259 - ISO 228 |
| Supplier code | DN ([mm]) | Model | PN ([bar]) | Dimension |
|---|---|---|---|---|
| label VS521 1/4 | 10 | VS521 | 30 | 1/4" |
| label VS521 1/2 | 15 | VS521 | 30 | 1/2" |
| label VS521 3/4 | 20 | VS521 | 30 | 3/4" |
| label VS521 3/8 | 10 | VS521 | 30 | 3/8" |
| label VS521 1' | 25 | VS521 | 30 | 1" |
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