039-122 Low-Pressure Regulator for Natural Gas & LP

Category: Propane

Product Description

This is an IMPCO style Regulator for Low-Pressure Natural Gas and LP on small engines. Its Part Number is 039-122 or KN 039-122.

Application: This low-pressure regulator is suitable for small engines running on Propane, Natural Gas, or LP. This regulator can be used in engines up to 37 KW or 50 HP.

Product Specifications

Specifications of the 039-122 Low-Pressure Regulator:

Category	IMPCO Style Low-Pressure regulator
Brand	Aftermarket
Condition	New
Fitment	Direct Replacement
Fuel Type	LPG Vapor or Natural Gas Vapor
Inlet	3/4" Female NPT
Outlet	3/8" Female NPT
Orifice	7/16"
Maximum Inlet Pressure	13.84" W.C. or 3.44 kPa
Nominal Outlet Pressure	-0.5" W.C. or -0.12 kPa
Initial Flow Pressure	-0.05 to –0.35 W.C.
Horsepower (Standard LPG)	40 hp (30 kW)
Horsepower (High Flow LPG)	50 hp (37 kW)
Horsepower (Standard Natural Gas)	25 hp (19 kW)
Horsepower (High Flow Natural Gas)	30 hp (22 kW)
Operating Temperature Range	-40° F to +250° F (-40° C to +121° C)
Diaphragm Material	Silicone
Primar	Manual
Weight	1.15 lbs

039-122 Low-Pressure Regulator

This is an aftermarket regulator for low-pressure propane, natural gas, or LP in small horsepower applications. The regulator offers simple, hassle-free operation with maximum sensitivity. 039-122 Low-Pressure Regulator comes with a manual primer on the back. The regulator can be completely rebuilt using IMPCO repair kits.

Figure: 039-122 Low-Pressure Regulator1

How to install 039-122 Low-Pressure Regulator

Installing a KN 039-122 Low-Pressure Regulator is pretty straightforward. It should be mounted vertically as close to the carburetor as possible. The arrow on the back must be pointing upward. It can be mounted horizontally if fuel contamination is controlled by using HD-5 or HD-10 propane.

Warranty Information

The 039-122 Low-Pressure Regulator comes with a 1-year limited warranty.

Frequently Asked Questions

What is the maximum inlet pressure for KN 039-122?

The maximum inlet pressure is 3.44 kPa.

Does it have a primer?

Yes, the 039-122 regulator has a manual primer.

What is the Operating Temperature Range?

The operating temperature range is -40° F to +250° F (-40° C to +121° C).

Can it be refurbished?

Yes, it can be completely rebuilt using IMPCO kits.

What’s the dimension of the orifice?

The dimension of the orifice is 7/16".

What’s the diaphragm material?

The diaphragm is made of silicone.

Need More Parts?

Are you looking for something else? Please browse our Part Catalog here. Lift Parts Warehouse provides quality aftermarket parts at a very reasonable price. All parts come with a limited 1 Year Warranty. We also guarantee a 100% fit for our parts.

1The actual product may vary slightly in color and appearance. This image is for illustration purposes only.