CSV1A Installation Instructions
PREPARATION and INSTALLATION
1) It is important that the well has been pumped until clean before any valve installations. You do not want to fill the valve with
debris/drilling mud/sand/pvc shavings, etc. (Note: Multiple pump systems need a CSV for each pump). Turn off power to pump and
2) The CSV1A must be installed prior to any tee offs. Correct order of installation should be: Pump - CSV1A - All other outlets
including the tank/switch. The only valve allowed between the pump and the Cycle Stop Valve is a check valve. (Always keep in mind
this is a pump control valve. All water pumped/demanded must first go through our valve for it to be able to control the pump).
Direction of flow is indicated by the arrow on the valve itself for proper positioning.
3) The diaphragm style pressure tank should be installed downstream of the of the CSV1A.
There are two options: The tank can be installed/plumbed into the 3/4" port on the bottom of the CSV1A valve with the pressure
switch/gauge/presure relief valve installed on the two 1/2" side ports....or the tank can be tee'd off of the main line via a standard
tank Cross or tank tee. Pressure switch and other controls can either be installed on the tank tee or tank cross. (Note: Do not
install pressure switch directly on main line away from pressure tank. Pre-charge pressure in the tank should be 2-5 psi lower than
pressure switch start point.)
4) Install using teflon tape on all threads. Four to seven wraps of teflon tape is usually sufficient. All connections should be
SETTING THE VALVE
1) Be sure the adjustment stem is loosened counter clockwise almost all of the way out. (You might have to loosen the lock nut if it
2) Turn on enough water to dump your pressure tank and cause your pump to come on.
3) Once the pump has come on, adjust your demand to 2-3 gpm (This reduced demand is important. You do not want to set the
valve with more gpm going through it than this). With the adjustment stem loosened all of the way out, the valve is going to try to
hold a low pressure of 15-25 psi or so. Wait a few moments after each adjustment for the valve to react and the pressure to
4) The CSV1A is adjusted by turning the adjustment stem clockwise to increase downstream pressure and counter clockwise to
decrease downstream pressure. Adjust the CSV1A until the pressure steadies at your desired working pressure. Tighten the lock
nut. The valve is set.
The CSV1A works with your pump sytem using pressure. The CSV1A has to be set within your existing system pressure parameters
to work correctly. The pressure tank pressure needs to be 2-5 psi lower than your pressure switch cut in pressure. The pressure
switch cut off pressure needs to be higher than the CSV1A working pressure. How much higher depends on your pressure tank size.
See chart below for your specific tank/pressure switch recommendations/examples.