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an Olsträd Engineering Company

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Tag Archives: Proof of Closure

FAQ: Valvario Proof of Closure and Visual Indication

Q: Why do I have to specify a flow direction when ordering valVario solenoid valves with proof of closure and visual indication? A: Perhaps the best way to answer this question is to start with a quick description. Many manufacturers differentiate between models featuring proof of closure (POC) and those with visual indication (VI), but Read More

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