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Home » Public Forums » GMCnet » Living Area Water Pump 55 PSI Safe?
Living Area Water Pump 55 PSI Safe? [message #354690] Thu, 14 May 2020 09:16 Go to previous message
Jeremy Sanford is currently offline  Jeremy Sanford   United States
Messages: 35
Registered: August 2018
Location: Sacramento CA
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The living area water pump in my 77 Kingsley is a Shurflo 2088 with a build date of 5/99, the specs are 2.0 GPM and 45 PSI. The Shurflo pumps available now are either 2.3 GPM and 50 PSI or 3.0 GPM and 55 PSI. Is this too much PSI for the old plastic plumbing system in the GMC? The Maintenance Manual states "A pressure switch is located at the water pump to maintain line pressure between 15 psi. and 30 psi." The label of the original 1970s Shurflo pump is visible in one of the Maintenance Manual pictures and a rating of 3.5 GPM is listed (can't see the PSI rating).

Thanks!

Jeremy Sanford
Sacramento, CA
1977 Kingsley
http://www.gmcmhphotos.com/photos/u42733-jsanford.html

 

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