North American 4031 Pilot Mixer
Sheet 4031-1
1⁄8 " NPT(F) R590-7810 1⁄8 " square head pipe plug (steel) - 2 required
¾ " NPT (F) Air Inlet
Air Pressure Tap
Mixture Pressure Tap
R510-2150 Locknut
A
¾ " NPT (F) Premix Outlet
2.47 (63)
1.75 (44)
4-6590-1 Gas Adjustment Screw
A
3⁄8 " fpt Gas Inlet
3.81 (97)
Section A-A
5.75 (146)
SPECIFICATIONS
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) Note: See Bulletin 4011/4021 and Bulletin 3065 for additional information
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 fna.sales@fivesgroup.com T +1 800 626 3477 - F +1 216 373 4237
Fives North American Combustion, Inc. 4455 East 71st Street - Cleveland, OH 44105 - USA www.fivesgroup.com
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