Model KN Regulator

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The Garretson Model KN is a secondary regulator designed for maximum sensitivity and simple, trouble free operation. It is suitable for use with low pressure, Natural Gas and LPG Vapor fuels. This regulator is typically used in service applications up to 30 kW (40 hp). A new high flow capacity unit is also available with a ½” orifice, suited for service applications up to 37 kW (50hp). The KN regulator is completely rebuildable using an IMPCO repair kit.


Fuel Type

LPG Vapor or Natural Gas Vapor


Inlet Pressure


13.84” w.c. (3.44 kPa)

Nominal Outlet Pressure

-0.12 kPa (-0.5” or below w.c.)

Initial Flow Pressure

-0.05 to -0.35 w.c.


Horsepower Rating

LPG (Standard)

40 hp (30 kW)

LPG (High Flow)

50 hp (37 kW)

Natural Gas (Standard)

25 hp (19 kW)

Natural Gas (High Flow)

30 hp (22 kW)

Operating Temperature Range

-40°F to +250°F (-40°C to +121°C)

Fuel Filtration

40 micron

Mounting Position,

As close to the carburetor as possible with the arrow on the back cover pointing up to minimize the effects of gravity on diaphragm travel. Horizontal position can be used when fuel contamination can be controlled with HD-5 or HD-10 specified LPG fuel.

Diaphragm Material





UL (AU1502) Inquire for specific ECE approval