| Type 290 with handwheel |
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| Type 190 with pneumatic actuator NC |
| Type 191 with pneumatic actuator NO/DA |
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| Construction |
| Diameter | DN 6, 8, 10, 12 |
| Body | investment cast 1.4435, resp. 316 L |
| forged 1.4404, resp. F 316 L |
| Inner surface | upto < 0,2 mm |
| Working pressure | max. 6 bar |
| Working temperature | max. 150 °C |
| Connection | welded in standard |
| Diaphragm | EPDM - FDA, PTFE/EPDM - FDA, NBR |
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| TYPE 290, DN 6 - 12 with handwheel |
| Standard visible indicator |
| Upper part | stainless steel |
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| TYPE 190/191, DN 6 - 12 with pneu.act. |
| Standard visible indicator | standard |
| Pneumatic actuator | piston |
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| Airpressure/working pressure diagram |
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| Typ 190 - NC - spring closed |
| Typ 191 - NO - spring opened |
| Typ 191 - DA - doubleacting |
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