unloader valves are fitted to the discharge line of waterblaster pumps to provide bypass function.

some models also incorporate an adjustable detergent injection venturi function

waterblasters

unloader valves for waterblasters

Code	pressure max (bar/psi)	flow max (lpm)	includes detergent injector	ports	spring colour
AL030.4911.01	200 / 2900	15 to 20	yes	3/8" BSP	red
AL030.4911.03	250 / 3600	15 to 20	yes	3/8" BSP	blue
AL030.4910.03	300 / 4350	30	no	3/8" BSP	black
AL032.4920.00	350 / 5075	42	no	3/8" BSP	violet

Code

pressure max (bar/psi)

flow max (lpm)

includes detergent injector

ports

spring colour

AL030.4911.01

200 / 2900

15 to 20

yes

3/8" BSP

red

AL030.4911.03

250 / 3600

15 to 20

yes

3/8" BSP

blue

AL030.4910.03

300 / 4350

3/8" BSP

black

AL032.4920.00

350 / 5075

3/8" BSP

violet

Accessories Index