You can find information regarding the tips by looking at the bottom right ofpage 8 of the below link
http://www.bgequip.com/original%20doc/PDF%27s/Pestcontrol_manuals/B&G%20Pest%20Control%20Catalog.pdf
The B&G Robco 5-in-1 Termite Treatment Kit can only be used with large spray rigs for power spraying. The fifth piece of this kit is an attachment that you can take the rods off and turn it into a power sprayer.
The Operating Instructions on page 5 state for connecting to a pump, you can connect the hose from the pump by:
1) a female quick-connect on the pump hose and a male quick connect on the tool (supplied by operator), or
2) a hose connected directly from the pump to the valve.
The thread size of the input port in the valve is 3/8 inch female pipe thread (FPT).