Posts Tagged chemical seal

Chemical Seal Assemblies Available from Lesman Stock

Chemical seals and fills are often necessary to protect your process instrumentation from harm. But the wait for a custom gauge-and-seal, switch-and-seal, or transmitter-and-seal combination could be an issue, keeping your process offline for longer than necessary, or costing a premium for quick delivery.

We’ve removed the potential for downtime and rush charges with our WIKA-certified assembly station, and improved stock of most popular transmitters, switches, gauges, diaphragm seals, and fill fluids. Lesman customers can experience next-day delivery on custom assemblies from in-stock instrumentation.

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Should I use a chemical seal with my pressure instruments?

Diaphragm seal mounts directly into the process linke to reduce damage to the Bourdon tube.Pressure instruments in contact with the process can take a real beating. Process fluids can corrode the wetted parts and destroy the sensing element.  Media the solidifies can clog the pressure-sensing port.  Or, an installed instrument can affect the process by providing a spot for media remnants to remain after cleaning and purging. Specialized chemical seals deal with these pressure sensing issues.

Here’s a list of questions to ask about your application that will determine if you need a chemical seal with your gauge, switch, or transmitter.

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