- Check valve on Heat exchanger Raw Water Pipe?
Re: Check valve on Heat exchanger Raw Water Pipe?
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Now that you have your answer, remove the rusty part completely, always use a good fresh OEM quality impeller and change it every 400 hours or less, always cleaning the pump interior, and you'll never have to worry about loose impeller pieces.
Thats a "wye" strainer. Definitely an after-market modification placed there probably in an attempt to prevent pieces of a failing raw water impeller from getting lodged in the heat exchanger. If you take off that plug, you'll find a basket in there to catch solid bits. Or, given the condition of the outside, you might find parts of a basket!
Not exactly an elegant implementation, but not a terrible idea.
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