Parker Hannifin
Pump & Motor Division Europe
Trollhättan, Sweden
59
Catalogue MSG30-8200/UK
BPV_F1_schematic.eps
Leif A./020114
’q’
Pilot operated
check valve
Solenoid
valve
Directional control valve
(‘open centre’)
F1 pump Valve block Drain port (External line)
BPV-F1 and BPV-T1 bypass valve
• Thebypassvalveismainlyutilisedinapplications
where the F1 pump is driven from the crank-shaft
through a cardan shaft, or when it is installed on an
engine PTO.
• TheBPVbypassvalveshouldbedisengagedduring
transportation when the pump is operating constantly
and the engine is running at max rpm; the hydrau-
lic system is not sized for the large flow that would
otherwise go through it.
• TheBPVvalvesubstantiallyreducestheenergy
loss during transportation.
• Thevalveinstallsdirectlyontopofthepumpend
cap with a pressure port ’banjo’ fitting and an inlet
port spacer bushing with two cap screws; refer to
the illustration to the right.
• AstheBPVvalveissymmetrical,itcanbe’turned
180°’ to prevent interference with chassis compo-
nents; it can be utilised for either left hand or right
hand pumps.
• Thevalvefunctionmustonlybeactivatedor
released (by means of the 24 VDC solenoid)
at no-load (below 20 bar) system pressure.
IMPORTANT INFORMATION
- In order to secure a cooling flow through the system,
a separate drain line must be connected from the
BPV-F1 drain line fitting directly to tank; (shown in the
Installation Information Bulletin MSG30-8227-INST/
UK/DE) refer also to the schematic.
- The pressure connector must be tightened
(to 50 Nm) before the suction fitting clamp screws
are tightened.
Bypass valve schematic.
Truck Hydraulics
Auxiliary valves
Pump pressure port
Pump suction
port
Pressure connector
Valve body
O-ring (x2)
(F1 end cap)
Suction
adapter
Hold-
down
clamp
(x2)
O-ring
(x3)
Spacer
bushing
Technical Information
39 (39)
BSP 1"
(BSP 3/4")
12