Low Water Pressure

[David Peck]

I have a 2010 DRV ES 38-RSSB3... During the last month or so my water pressure has been extremely low in my kitchen, bath, and shower. Outside water pressure at the spigot is 50 psi, yet my kitchen faucet as an example is at 0.4 g.p.m. Both my external spigot and internal SHURflo filters are relatively new and worked fine before the issue began... When first opening a faucet, the pressure is relatively strong, then within 10 - 15 seconds it dramatically drops to very low g.p.m... The same phenomena occurs whether I am on shore water or using my water pump / fresh water tank... Any ideas where I should troubleshoot?
David Peck

[wingnut60]

Check the check valve behind the service panel where the fresh water hose is connected. It may be going bad, or have some crud in it that is filling up the passageways soon after the water valve is opened.
It should be noticeable by use of a flashlight and looking behind the water manifold--just look for where the fresh water line is on the inside of where the hose is connected.
These valves can wear out, or get clogged with calcium--once you locate it, I would suggest that before purchasing another one (common item at RV store) that you take the old one with you for comparison, as there are many types of threads/fittings.
Or you can just remove the check valve and do without...
Joe

[Pvsaint]

Water filter changed recently? Could reduce water flow if dirty.