To choose a pressure regulator, consider the following:

• Number of inlet fittings. Dual inlet regulators are suitable for engines with multiple fuel rails, or installations requiring the fitting of a gauge or sensor.

• Adjustable or fixed rate
• Vacuum compensation. Vacuum connections are available on some regulators which can be connected to the inlet manifold. This will keep the pressure differential between the inlet manifold and the fuel rail constant, resulting in a fuel rail pressure that is constantly changing in line with the inlet manifold pressure.
• Size and type of fittings
• Body style
• Dimensions

	Description	Part No
	2.5 bar single regulator vacuum compensation inlet M12x1.5 outlet M14x1.5	#33230
	2.5 bar single regulator vacuum compensation inlet M12x1.5 outlet 8 mm barb	#33289
	3 bar dual regulator adjustable inlet 2 x 8 mm barb outlet 8 mm barb	#33003
	3 bar single regulator vacuum compensation inlet 10 mm O-ring style outlet 8 mm barb	#33249
	3 bar single regulator adjustable inlet 8 mm barb outlet 8 mm barb	#33001
	2 – 4 bar single regulator adjustable vacuum compensation inlet M14x1.5 outlet 8 mm barb	#33740
	2 – 5 bar dual regulator adjustable vacuum compensation inlet 2 x M14x1.5 outlet 8 mm barb	#33741