PA VB 450-200 Quick Start Manual

VB 450-200/300
Pressure regulating unloader valve.
It bypasses water flow at low pressure when gun shuts off.
P/N RATED
PRESSURE
bar - MPa
60.4020.00 200 - 20
60.4030.00 300 - 30
(1) The valve is especially designed for a constant use at a water temperature of 60°C. It can withstand up to a max.
temperature of 90°C for short intervals only.
(2) The max. pressure increase at system shut off is a percent value of calibration pressure. When it occurs, the valve is
set in operation and the whole fluid is diverted into bybass.
(3) The pressure decrease at bypass reset is a percent value of calibration pressure. It indicates the pressure drop
required for the valve to restore pressure in the system.
Instruction, Maintenance, Installation, Spare Parts Booklet.
For a correct use of the item, please follow the instructions.
Please copy all relevant information on the use and maintenance booklet of
the machine.
- Unloader Valve

60.4020.00 VB 450/200

60.4030.00 VB 450/300
-Intended for use with high flow rates
-Special steel spring with superior mechanical features, to maintain
calibration settings for longer
-Check valve specifically designed to prevent jammings
-Screw/Locknut adjusment to set maximum pressure level
-Dynamic seals with O-ring and sliding gasket
-Fixing screw slots
Technical Data
Max. Flow Rate: 450 l/min. Max. Temperature: 90°C (1)
PERMISSIBLE MIN.
PRESSURE ADJUSTABLE
PRESSURE
bar - MPa bar - MPa
220 - 22 20 - 2
330 - 33 30 - 3
(2)MAX PRESS. (3)PRESSURE
INCREASE AT DROP AT
SYSTEM SHUT BYPASS
OFF RESET
% %
10,7% 43,8%
7,8% 43,3%
Latest Update: 20/04/2018
E 258
Technical Booklet:
DN 32
1"1/4 Bsp FF
1"1/4 Bsp FF
INLET BYPASS
OUTLET
1"1/4 Bsp FF 1"1/2 Bsp F
1"1/4 Bsp FF 1"1/2 Bsp F
n. 12.9258.00
WEIGHT
g
5950
6025
1