least 3 ½” in diameter (Detail D – M2) through the countertop to allow clearance for the incoming
water pipe and reducing bushing.
If required, install the reducing bushing into the 2” NPT on the bottom of the pump (if you purchased
the reducing bushing from Bison Pumps it will already be installed). Be sure to apply Teflon tape to the
threads prior to installation. Next, align the pump along the perimeter of the bottom flange drawn
earlier. Once the pump is in the proper position, trace the anchor bolt holes and mark the center of
each hole. Remove the pump from the countertop. Using a 3/8” or 7/16” drill bit, drill holes through the
countertop for each anchor bolt.
Step #4: Attach hand pump to the countertop
Align the pump over the anchor bolt holes and install the four (4) bolts through the top of the counter.
Attach the washers and nuts by partially tightening the first nut. Then move to the nut diagonally
opposite. Repeat by moving to the other two in the same manner. Once all four are partially tightened,
completely tighten all four following the same pattern.
Step #5: Adjust the handle orientation
The pump will come with the handle in either the 3, 6, or 9 o’clock position (assuming the spout is at 12
o’clock). To adjust the position of the handle, remove the four top screws (Detail E – Items A) in the Top
Plate using a 5/32” Allen wrench. Rotate the handle to either a 3, 6, or 9 o’clock position as desired.
Once the proper position is found, replace the four top screws into the Top Plate. Be sure to re-tighten
the screws by partially tightening the first one. Then proceed in a pattern going diagonally across to the
next one until all four are partially tightened. Repeat the process and completely tighten each screw.
Step #6: Connect the water source to the pump
The Bison Model 1900 Stainless Steel Pitcher Pump can accept 2” NPT pipe. Again, if your incoming water pipe is
less than 2” NPT, then you will need a reducing bushing to downsize the pipe from 2” NPT to the size of
your water supply pipe. Bison recommends using at least 1” NPT pipe. Be sure you know what size your
water pipe is before purchasing this component. Apply Teflon tape to the water supply pipe and then
connect the water supply pipe to the pump connection by hand tightening.
Note 1: To drain the pump and water pipe there must be a free flow of water back to the source.
Therefore, it is important to NOT install a check valve or foot valve in the water pipe at any point
between the pump and the water source.
Note 2: If your water source is not a well, such as a pond or stream, then you should install a “wye” screen
filter in the pipe.
Model 1900 Owner's Manual Rev C
To Next Page
Loading...
