Originally Posted by Mike Leary
There should be NO leakage from a wiper seal. They should "lock and load". RB 1800 series have that reputation.
They very well may be 1800s. They have a big white gasket which occasionally give out. RB sells the gaskets separate, which I happen to already have.
When I changed out the gaskets, I ended up with 26 psi measured at my worst head with 20 gpm through the system.
Regarding getting a pressure gauge fitted between the sprayer body and the nozzle, there are fittings made for these which cost under $2. (for example
PRESSURE-GAUGE-ADAPTER is available at http://www.sprinklerwarehouse.com/Hu...ge-adapter.htm