Manually Operated Valve DN 15 – 50 mm (1/2″ – 2″)
Type 982 the diaphragm valve is particularly suitable for shutting off and regulating abrasive or dirty fluids.
The valve is extremely compact and very light. The innovative hand wheel is equipped with a patented immediate and ergonomic operating locking device that allows it to be adjusted and locked in any position.
FEATURES
- Process media can be neutral or aggressive liquid, and gaseous, dependent upon material selection of body and diaphragm
- Flow can be in either direction
- Insensitive to dirty or contaminated media
- Excellent flow characteristic
- Locking device
- Bubble tight sealing
- Installation can be in any position
- Eliminates water hammer
- Complete with position indicator
- Compact construction
- Maintenance free non-corrosive actuator
Kv100 flow coefficient
The KV100 flow coefficient is the Q flow rate of cubic meter per hour of water at a temperature of 20°C that will generate ∆p = 1 bar pressure drop at a certain valve position.
The KV100 values shown in the table are calculated with the valve completely open.
| Technical specifications | |
| Design | Diaphragm Valve
Plastic bonnet and handwheel |
| Size range | DN 15 – 50 |
| Diaphragm size see page 11 | MA 25 – 50 |
| Body material | Investment cast 1.4435/316L
S.G. iron EN-GJS-400-18-LT (GGG40.3)-PP-Lined S.G. iron EN-GJS-400-18-LT (GGG40.3)-PFA-Lined Cast iron EN-GJL-250 (GG 25) Cast iron EN-GJL-250 (GG 25)-Hard-Rubber-Lined |
| End connection standards see page 8-9 | Threaded socket: DIN ISO 228
Flange: EN 1092 PN10/16, ANSI Class 125/150 |
| Diaphragm material | EPDM, PTFE, NBR, FPM |
| Actuator material | PP-GR, non rising handwheel |
| Max. working pressure | 10 bar (150 PSI) |
| Temperature range | -10 °C to +80 °C , depending on diaphragm and body material |
| Control functions | Manual control |
- High visibility graduated optical position indicator protected by a transparent cap with seal O-Ring
- Customization plate: the customization lets you identify the valve on the system according to specific needs
- Locking system: innovative handwheel with a patented immediate and ergonomic operating locking device that allows it to be adjusted and locked in over 300 positions
- Handwheel and bonnet in high mechanical strength and chemically resistant PP-GR, providing full protection by isolating all internal metal parts from contact with external agents
- Floating pin connection between the control screw and diaphragm to prevent concentrated loads, improve the seal and extend its lifetime
| Threaded | Flanged |
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Dimensions (mm)
| Threaded socket | Flanged socket | |||||
| DN | MA | ØB | H1 | Weight kg | H2 | Weight kg |
| 15 | 25 | 100 | 110 | 0,77 | 113 | 2,5 |
| 20 | 25 | 100 | 110 | 0,81 | 113 | 3,3 |
| 25 | 25 | 100 | 120 | 1,03 | 118 | 3,8 |
| 32 | 40 | 140 | 151 | 1,54 | 158 | 7,0 |
| 40 | 40 | 140 | 153 | 1,78 | 158 | 7,0 |
| 50 | 50 | 140 | 176 | 3,1 | 176 | 10,0 |