VERDER VERDERAIR VA 25 Instructions-Parts List Manual page 9

Installation
Fluid Pressure Relief Kit
Pressure Relief Kit 819.4472 (V) is available for Aluminum Pumps, to prevent overpressurization and rupture of the pump or
hose. See Fig. 7. The kit includes instructions.
Thermal expansion of fluid in the outlet line can cause overpressurization. This can occur when using long fluid lines exposed to
sunlight or ambient heat, or when pumping from a cool to a warm area (for example, from an underground tank).
Overpressurization can also occur if the VERDERAIR pump is being used to feed fluid to a piston pump, and the intake valve of
the piston pump does not close, causing fluid to back up in the outlet line.
KEY
R 1 in. bspt Optional Fluid Inlet Port
S 1 in. bspt Optional Fluid Outlet Port
V Pressure Relief Kit
1
Install kit between fluid inlet and outlet manifolds.
2
Connect fluid inlet line here.
3
Connect fluid outlet line here.
Fig. 7
Caution
S
3
R
2
V
1
02653B
819.4470 9