Diaphragm inlet valves
The diaphragm inline valves provide reliable manual isolation across a wide range of vacuum applications. The robust diaphragm-sealed design completely isolates the operating mechanism from the vacuum environment, helping to ensure long service life and dependable performance.
Available in ISO-KF sizes from DN10 to DN40, selected models feature a visual open-position indicator and integrated mounting options for easy system installation.
Your Benefits
- Leak-tight performance better than 1 × 10⁻⁶ mbar·l/s
- Diaphragm completely isolates the operating mechanism from the vacuum environment
- Visual valve-open indication on selected models
- Rugged construction for dependable operation and long service life
- Panel-mounting capability for straightforward system integration
Dimensional drawing
| A | B | C | D | E | F | G | H | |
| Model | Open | Closed | ||||||
| DIV10 | 71 | 64 | 33.5 | 42 | 60 | ISO-KF10 | 8 | 43 |
| DIV16 | 71 | 64 | 33.5 | 32 | 80 | ISO-KF16 | 8 | 43 |
| DIV25 | 123 | 111 | 51 | 67 | 100 | ISO-KF25 | 12 | 72 |
| DIV40 | 130 | – | – | 105 | 130 | ISO-KF40 | – | 96 |
Technical Specifications
| Valves | Parameter | Units | DIV10 | DIV16 | DIV25 | DIV40 |
| DIV | Molecular conductance | l/s | 1.7 | 9 | 23.3 | |
| DIV | Rated operating pressure | bar | 5 | |||
| DIV | Rated operating pressure | Pa | 5×105 | |||
| DIV | Maximum permitted pressure with co-seal | bar | 9 | |||
| DIV | Maximum permitted pressure with co-seal | Pa | 9×105 | |||
| DIV | Leak tightness (1 bar/ 1×105 Pa differential) | mbar l/s | 1×10-6 | |||
| DIV | Leak tightness (1 bar/ 1×105 Pa differential) | Pa l/s | 1×10-4 | |||
| DIV | Ambient operating temperature range | °C | 0 – 40 | |||
| DIV | Ambient storage temperature range | °C | -10 – 40 | |||
| DIV | Maximum bake-out temperature | °C | 50 | |||
| DIV | Mass | kg | 0.23 | 0.24 | 0.76 | 2.3 |
Ordering Information
| Valves | Product number | Description | Specified |
| DIV | 215501 | DIV M AL DN 10 ISO-KF FKM | |
| DIV | 215502 | DIV M AL DN 10 ISO-KF NIT | |
| DIV | 215503 | DIV M AL DN 16 ISO-KF FKM | |
| DIV | 215504 | DIV M AL DN 16 ISO-KF NIT | |
| DIV | 215505 | DIV M AL DN 25 ISO-KF FKM | |
| DIV | 215506 | DIV M AL DN 25 ISO-KF NIT | |
| DIV | 215507 | DIV M AL DN 40 ISO-KF FKM | |
| DIV | 215508 | DIV M AL DN 40 ISO-KF NIT | |
| DIV Spare parts | GK3300001 | Valve Diaphragm ISO-KF 10/16 FKM | Diaphragm |
| DIV Spare parts | GK3300002 | Valve Diaphragm ISO-KF 10/16 NIT | Diaphragm |
| DIV Spare parts | GK3300003 | Valve Diaphragm ISO-KF 25 NIT | Diaphragm |
| DIV Spare parts | GK3300004 | Valve Diaphragm ISO-KF 25 FKM | Diaphragm |
| DIV Spare parts | GK3300005 | Valve Diaphragm ISO-KF 40 NIT | Diaphragm |
| DIV Spare parts | GK3300006 | Valve Diaphragm ISO-KF 40 FKM | Diaphragm |
