Combustion Catalog | Fives North American

North American 4031 Pilot Mixer

Sheet 4031-1


1⁄8 " fpt Pressure Tap (R590-7810 1⁄8 " square head pipe plug, steel - 2 required)

4-6590-1 Gas Adjustment Screw


R510-2150 Locknut

¾ " fpt Mixture Outlet

¾ " fpt Air Inlet



3⁄8 " fpt Gas Inlet

Section A-A



Maximum Operating Pressure: 20 psig (1.4 bar) Normal Operating Pressure: 10-30"w.c. (25-75 mbar) Minimum Design Temperature: -40°F (-40°C) Maximum Design Temperature: 375°F (190°C) Body Materials: Cast Iron with Brass air orifice Gas Adjustment Screw Material: 416 Stainless Steel Weight: 1.7 lbs. (.8 kg)

WARNING: Situations dangerous to personnel and property may exist with the operation and maintenance of any combustion equipment. The presence of fuels, oxidants, hot and cold combustion products, hot surfaces, electrical power in control and ignition circuits, etc., are inherent with any combustion application. Components in combustion systems may exceed 160°F (71°C) surface temperatures and present hot surface contact hazard. Fives North American Combustion, Inc. suggests the use of combustion systems that are in compliance with all Safety Codes, Standards, Regulations and Directives; and care in operation.

CONTACT T +1 800 626 3477 - F +1 216 373 4237

Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA

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