54
HARDI
®
N-SERIES 3-PT SPRAYER DIAPHRAGM OPERATOR'S MANUAL
*Standard mesh
6.3 Nozzles And Fittings
Poor seals are usually caused by:
• Missing O-rings or gaskets
• Damaged or incorrectly seated O-rings
• Dry or deformed O-rings or gaskets
• Foreign materials
Therefore, in case of leaks; DO NOT overtighten. Disassemble, check
condition and position of O-ring or gasket, clean, lubricate and reas-
semble. For radial type seals (O-ring) hand tighten only, do not use
pliers (Fig. 27).
The O-rings need to be lubricated ALL THE WAY AROUND before fi t-
ting on to the nozzle tube.
HARDI
®
recommends using a vegetable based oil to prolong the life of
the O-ring.
ISO Nozzle
Size
Suction Filter Self Cleaning
Filter (optional)
Nozzle
Screen
Inline Filters
(optional)
Pink (075)
Orange (01)
Green (015)
Yellow (02)
50
100
100
100
Lilac (025)
Blue (03)
50
80
80
80
Red (04)
& Larger
30*
50*
50*
50*
Fig. 27
