Hi Paul, Between the two I'd go with the 2.9 based on the combination of flow / PSI / Amps. The 2.9 needs a 10 amps circuit / breaker while the 3.5 needs a 15 amp circuit.
Your boat most likely has the 10 amp breaker, you'd have to at least change the breaker / possibly upgrade the wiring as well. Also, if you are counting amps while on the hook, the higher capacity pump will take a deeper cut into your batteries. That is also why I decided to rebuild / stick with the original model 500736 pump on my boat. It's a little noisy but it's built like a truck, easy to rebuild, and makes 3.0 GPM / 40 PSI on a 8 amp circuit / breaker. -Francois Rivard 1990 34+ "Take Five" lake Lanier, GA Hi, I am in the process of upgrading the fresh water plumbing on my boat. The old fresh water pump was removed long before I obtain this project. I am currently deciding between two pumps: a Jabsco Par-Max 2.9gal/min 50psi (31395-0092) and a Jabsco Par-Max 3.5gal/min 40psi (32600-0092). The Par-Max 3.5 cost about 50% more. I want to favor the Par-Max 2.9 to conserve water but I am interested to hear what other think about the 2.9 gal/min flow being enough? Thanks for anyones input. - Paul E. 1981 C&C 38 Landfall S/V Johanna Rose Carrabelle, FL Regards François Rivard 4111 Northside Pkwy, Nw Big Data Black Belt Atlanta, 30327-3015 IBM Sales & Distribution, Software Sales Usa Mobile: 770-639-0429 e-mail: jfriv...@us.ibm.com
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