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Type 0343 SUCO-Piston pressure switch up to 250 V acc. to IECEX scheme
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Suco 856003 Piston pressure switch 0.6 | eBay
Mechanical Pressure Switch Controller Adjusts Piston Type Stainless Steel Diaphragm Water Pump Fire Fluid Vacuum Pressure Oil and Gas 30-400bar - China Pressure Controller Switch, Electronic Adjustable Pressure Control | Made-in-China.com