On 11/23/2021 3:24 PM, Phillip Matheson wrote:
  nice simple setup. Parallel would be better

+++++++++++++++++++++++++++++++++++++++++++++++++

I'm thinking mine are in parallel as I recall checking for internal check valves in order to eliminate external check valves and simplify the system.  I simply hooked them up "head to head" and tried to pump backwards through the pump.  No reverse flow.

As always, YRMV..................

Larry Flesner
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