The Prins Lpg Reducer - Prins VSI LPG Installation Manual


Mount the reducer to the body of the vehicle in the engine compartment, never on the engine!

Mount the reducer so that it is easy to adjust the pressure.

Install the supplied 8 mm threaded end in the back cover of the reducer.

Mount the reducer as shown in the drawing.

Mount the reducer on a bracket and bolt on with a M8x1 nut.

The LPG lock-off valve can be installed in different positions. Do not damage the O-rings when
rotating the lock-off valve. See picture for torque moment.

The reducer is connected to the heating system circuit by couplings between the coolant fluid
hoses: dependant on the converted vehicle the reducer is placed in series or in parallel with the
heating system.

Overpressure 5mm relief hose : connect to the intake manifold.

No component of the LPG-system shall be located within 100 mm of the exhaust or similar heat
source, unless such components are adequately shielded against heat.

The pressure can be adjusted with the adjusting screw (Allan screw) in the front cover.

Seal the adjusting screw, with the sticker, in the front cover of the reducer after adjusting the
pressure.
Standard reducer, 6 mm LPG pipe, used for engines with a HP up to 135 kW ( 180 HP ).
High Output reducer, 8 mm LPG pipe, used for engines with a HP over 135 kW ( 180 HP ).
Use a High Output MAP reducer on blown engines ( turbo / compressor )

The Prins LPG reducer

mounting positions
NO
threat locking compound allowed !!
Copyright © Prins Autogassystemen B.V. 2013 Page 7