Maxon · Founded 1916 · Muncie, Indiana · A Honeywell Company · First ISO 9001-Certified Burner Manufacturer

Maxon (Honeywell) —
Industrial Igniters, Electro-Mechanical Gas Valves & Burner Parts

Memphis Control Center stocks Maxon industrial combustion parts — spark igniters, flame rods, electro-mechanical gas safety shut-off valves, valve switch assemblies, gaskets, and hardware for Maxon burners and combustion systems. Igniters: 18110 (Auburn I-101 / Eclipse 16160 cross), 23739 (Auburn I-31-1 / Eclipse 16927 cross), 18075, 18117 flame rod, 18118 (18mm), 47789 (Kinedizer LE), 34043 and MX34042 (OvenPak II). Gas valves: 150SMA series 1-1/2" electro-mechanical safety shut-off valves — close in under 1 second, metal-to-metal seating, FM/CSA/UL approved. Flame rod assemblies, switch assemblies, gaskets, and burner hardware. Family-owned, serving Memphis since 1967.

Browse All Maxon Products Call (901) 458-2000
Honeywell Maxon · Founded 1916 Industrial Igniters · Flame Rods 150SMA Electro-Mechanical Gas Valves OvenPak · Kinedizer · Combustifume Burner Parts Family-Owned Since 1967
First ISO 9001-Certified Burner MakerMaxon Corporation was the first industrial burner manufacturer to receive ISO 9001 certification — a standard of manufacturing quality the entire industry now follows
Igniter Cross-References StockedMaxon igniters cross to Auburn, Eclipse, Crown, Champion, and USI — we stock the Maxon OEM part numbers and can help you identify the right igniter for your burner
150SMA Gas Valves AvailableMaxon 150SMA electro-mechanical gas safety shut-off valves — 1-1/2" line size, close in under 1 second, FM/CSA/UL approved, SIL 3 capable. Multiple configurations available
Same-Day ShippingMaxon parts ship same day from Memphis, TN — free. Call (901) 458-2000 with your Maxon part number or burner model and we'll confirm availability
Maxon Corporation — industrial combustion since 1916. Maxon Corporation was founded in 1916 by Harry Maxon in Muncie, Indiana, where the company remained headquartered throughout its history. For over 90 years the company was a pioneer in industrial combustion — burners, gas valves, flow control systems, and combustion accessories for process heating across petrochemicals, power generation, metals, food processing, automotive, and more. Maxon was notably the first industrial burner manufacturer to receive ISO 9001 certification. In November 2007, Honeywell completed the acquisition of Maxon Corporation for approximately $185 million, integrating Maxon into Honeywell's Environmental and Combustion Controls (ECC) business to expand Honeywell's reach into industrial process heating. Maxon continues to operate as Maxon, A Honeywell Company from its original Muncie, Indiana manufacturing site, where the team now develops low-NOx and hydrogen-ready burner technologies. Maxon's end markets include automotive painting lines, food processing ovens, industrial dryers, kilns, chemical processes, glass furnaces, plastics thermoforming, printing oxidizers, and textile processing.

Maxon Igniters, Flame Rods & Electrodes

Maxon spark igniters are used as original equipment on Maxon burners — Kinedizer, OvenPak, Combustifume, Aerojet, APX, and SNG series. Many Maxon igniter part numbers cross-reference directly to Auburn, Eclipse, Crown, and Champion equivalents. Contact us or call (901) 458-2000 with your burner model or old igniter part number and we'll identify the correct Maxon replacement.

Maxon PartTypeSpecificationsCross-Reference (Auburn · Eclipse · Crown · Champion)Shop
18110Spark igniter10mm × 1mm thread · self-grounding · 2.72" total lengthAuburn I-101 · Eclipse 16160 · Crown CA500 · Champion UY-6Shop
23739Spark igniter14mm × 1.25mm thread · self-grounding · 1-1/2" ext gap · for APX burnersAuburn I-31-1 · Eclipse 16927 · Crown CA506 · Champion F121508Shop
18075Spark plug14mm spark plug · direct-mount · for Combustifume burnersAuburn I-31 (variant)Shop
18117Flame rodDirect-mounted flame sensing rod · unsealed · L = 7.125" · for SNF burnersMaxon OEM — no standard crossShop
18118Spark igniter18mm thread · Rajah E9-SSN connector · nickel-chromium electrode · ceramic insulatorMaxon OEM — used on SNF and other Maxon burnersShop
47789Spark igniter14mm thread · for Maxon Kinedizer LE burnersMaxon OEM — Kinedizer LE specificShop
34043Spark igniterFor Maxon OvenPak II 400 burnersMaxon OEM — OvenPak II specificShop
MX34042Igniter assemblyComplete igniter assembly for Maxon OvenPak II 400 burnersMaxon OEM — OvenPak II specificShop
27732Flame rod assembly20" flame rod assembly · 1/2" NPT connectionMaxon OEM flame rodShop
51165Ground rodMaxon burner ground rod—Shop
27729Igniter/electrodeMaxon igniter — confirm burner model for applicationMaxon OEMShop

Cross-reference note: 18110 = Auburn I-101 / Eclipse 16160 / Crown CA500 / Champion UY-6 — 10mm × 1mm thread, self-grounding, used on Eclipse AH and Maxon burners. 23739 = Auburn I-31-1 / Eclipse 16927 / Crown CA506 / Champion F121508 — 14mm × 1.25mm, self-grounding. Sources: lesman.com, radwell.com, burnerparts.com, combustionsupplies.com, Maxon Product Assembly Number document.

Maxon Electro-Mechanical Gas Safety Shut-Off Valves — Complete Line

Maxon electro-mechanical gas valves are industrial safety shut-off valves for gas fuel lines on industrial burners, boilers, ovens, furnaces, dryers, and process heating equipment. When power is removed — by a flame safeguard, emergency stop, or safety interlock — a powerful internal spring closes the valve in less than 1 second, cutting off gas flow. They are required by NFPA 86 (Ovens and Furnaces) and NFPA 87 (Fluid Heaters) on most industrial combustion installations. Available in 3/4" through 6" pipe sizes, cast iron through stainless steel bodies, automatic or manual reset, normally closed or normally open. All Maxon EM valves carry FM, CSA, UL, and CE approvals and are SIL 3 capable per IEC 61508. Contact us or call (901) 458-2000 with your full nameplate model number to confirm availability and lead time.

How to Read a Maxon Gas Valve Model Number

Example: 150 S MA 11 -AA11-BB21A0
150 = 1-1/2" pipe size  ·  S = standard flow body (C = large capacity, H = high capacity)  ·  M = motor actuator  ·  A = automatic reset (M = manual reset)  ·  11 = normally closed shut-off (21 = normally open vent, 12 = NC hazardous location, 22 = NO vent hazardous location)  ·  -AA11-BB21A0 = solenoid, voltage, switch, and option codes (match exact nameplate). Sizes: 075 = 3/4", 100 = 1", 125 = 1-1/4", 150 = 1-1/2", 200 = 2", 250 = 2-1/2", 300 = 3", 400 = 4", 600 = 6". Source: Honeywell/Maxon product page and valve instruction manual.

SMA11 Series — Auto Reset · NC Standard Body · Automatic Reset · Normally Closed Shut-off · All Pipe Sizes

SMA11 = Standard flow body, Motor Automatic reset, Normally Closed shut-off. The most commonly specified Maxon EM gas valve. Opens when energized; closes in <1 second when de-energized (power lost or safety circuit opens). Automatic reset means the valve reopens automatically when power is restored and the flame safeguard sequences through a new ignition trial. Used on most industrial furnace and oven gas trains. Available in 3/4" through 6" pipe sizes with suffix codes for solenoid type, voltage, and switch packages per your application requirements.

Base ModelPipe SizeDN (metric)ResetFunction
075SMA113/4"DN20AutoShut-off (NC)
100SMA111"DN25AutoShut-off (NC)
125SMA111-1/4"DN32AutoShut-off (NC)
150SMA111-1/2"DN40AutoShut-off (NC)
200SMA112"DN50AutoShut-off (NC)
250SMA112-1/2"DN65AutoShut-off (NC)
300SMA113"DN80AutoShut-off (NC)
400SMA114"DN100AutoShut-off (NC)
600SMA116"DN150AutoShut-off (NC)

Note: Base model numbers shown. Full part number includes suffix codes for solenoid, voltage, and switch options — always order by complete nameplate model number. Multiple 150SMA11 configurations available; other sizes available to order. Call (901) 458-2000 for availability and lead time.

3/4" to 6" Pipe Auto Reset Normally Closed Closes <1 Second FM · CSA · UL · CE Up to 200,000 Cycles
SMM11 Series — Manual Reset · NC Standard Body · Manual Reset · Normally Closed Shut-off · All Pipe Sizes

SMM11 = Standard flow body, Motor Manual reset, Normally Closed shut-off. Required by NFPA 86 for certain industrial furnace applications where a supervised manual restart is mandatory after a safety shutdown. After the valve closes on a safety event, a technician must physically push the manual reset button before the valve can reopen — it will not reopen automatically even when power is restored. This ensures the system is inspected before re-ignition. Critical in applications where NFPA, insurance, or AHJ requirements mandate manual restart after flame failure.

Base ModelPipe SizeDN (metric)ResetFunction
075SMM113/4"DN20ManualShut-off (NC)
100SMM111"DN25ManualShut-off (NC)
125SMM111-1/4"DN32ManualShut-off (NC)
150SMM111-1/2"DN40ManualShut-off (NC)
200SMM112"DN50ManualShut-off (NC)
250SMM112-1/2"DN65ManualShut-off (NC)
300SMM113"DN80ManualShut-off (NC)
400SMM114"DN100ManualShut-off (NC)
600SMM116"DN150ManualShut-off (NC)
3/4" to 6" Pipe Manual Reset NFPA 86 Applications Normally Closed FM · CSA · UL · CE
SMA21 / SMM21 — Normally Open Vent Valves Standard Body · Auto or Manual Reset · Normally Open Vent Valve · All Sizes

Normally open vent valves are the inverse of shut-off valves: they are open when de-energized (no power) and close when energized. Used on gas train vent lines — when the main gas train shuts off, the vent valve opens to purge any trapped gas to atmosphere safely. Also used in process purge lines where gas flow is needed during off/power-lost conditions. The SMA21 (automatic reset) and SMM21 (manual reset) follow the same sizing and body options as the shut-off valve series.

Base ModelPipe SizeResetFunction
075SMA213/4"AutoVent (NO)
150SMA211-1/2"AutoVent (NO)
150SMA21-AA22-BB10A01-1/2"AutoVent (NO)
150SMA21-AA22-BB11B01-1/2"AutoVent (NO)
200SMA212"AutoVent (NO)
300SMA213"AutoVent (NO)
075SMM213/4"ManualVent (NO)
150SMM211-1/2"ManualVent (NO)
200SMM212"ManualVent (NO)
Normally Open Gas Train Vent Lines Auto or Manual Reset 3/4" to 6" Pipe
Hazardous Location · High Capacity · In-Stock Configs NI Hazardous Location Valves · C/H High Capacity Body · Current In-Stock 150SMA

Hazardous Location (NI) versions (SMA12, SMA22, SMM12, SMM22) are approved for Nonincendive Class I, Division 2 installations — Group ABCD, Class II Division 2 Groups FG, and Class III Division 2. Required when the valve is installed in a classified area per NFPA 70. High capacity body (C-body) valves (CMA11, CMA21, CMM11, etc.) provide greater Cv flow factors through the same pipe sizes — used when pressure drop is critical. H-body provides the highest capacity. Currently stocked 150SMA configurations are listed below — call for others.

ModelTypeDescriptionShop
150SMA12-FA22-BB21A0NI Hazardous1-1/2" NC shut-off · auto reset · hazardous locationShop
150SMA12-FA22-BB21B0NI Hazardous1-1/2" NC shut-off · auto reset · hazardous locationShop
150SMA22-FA22-BB11A0NI Vent1-1/2" NO vent valve · auto reset · hazardous locationShop
150SMA22-FA22-BB11B0NI Vent1-1/2" NO vent valve · auto reset · hazardous locationShop
075CMA11High Flow3/4" NC shut-off · C large capacity body · auto resetInquire
150CMA11High Flow1-1/2" NC shut-off · C large capacity body · auto resetInquire
200CMA11High Flow2" NC shut-off · C large capacity body · auto resetInquire
300CMA11High Flow3" NC shut-off · C large capacity body · auto resetInquire
Hazardous Location (NI) Class I Div 2 ABCD C-Body High Flow H-Body Max Flow FM · CSA · UL · CE SIL 3 Capable

Maxon Electro-Mechanical Gas Valve — Confirmed Specifications

All specifications verified from Honeywell process.honeywell.com product page (September 2026) and Maxon valve instruction manual (Lesman Industrial, Kromschröder Docuthek).

SpecificationValueNotes
Pipe sizes3/4" to 6" (DN20–DN150)Nine sizes: 075, 100, 125, 150, 200, 250, 300, 400, 600
Valve closure time<1 second (spring return)Closes immediately on power loss — no delay
Max line pressure125 PSIGAll standard body types
Temperature range-20°F to 140°F (S/C models)H-body: -20°F to 125°F; oxygen service: 0°F min
Body materialsCast iron, carbon steel, LTCS, stainless steelCorrosive gas and oxygen-service options available
SeatingMetal-to-metalClass VI seat leakage per FCI 70-2
ApprovalsFM, CSA, UL, CE, SIL 3 (IEC 61508)Also: AGA, GAR, PED, LVD, EMC, IECEx, KTL
Hazardous locationClass I Div 2 Groups ABCD · Class II Div 2 Groups FG · Class III Div 2NI versions only (model suffix -12, -22)
Cycle life (auto reset)Up to 200,000 cyclesManual reset: 6,000–20,000 cycles (standard-dependent)
Max Cv (flow)Up to 1,172 Cv6" high capacity (H) body
Top assemblyField rotatable in 90° incrementsFour orientations without disassembly
ConnectionsThreaded · Flanged · Socket weldedISO connections available (not FM/CSA recognized)
MountingHorizontal or verticalAny orientation
Seal materialsBuna · Viton · EPDM · OmniflexSelect per fuel type and temperature
Position indicationVisual open/closed windowStandard on all models
Switch optionsVOS (valve open) · VCS (valve closed) · SPDT or DPDTSignal duty only — not load switching

Don't see your exact model number? Call (901) 458-2000 or contact us with your complete nameplate model number — we can source specific configurations. Always match the full model number from the valve nameplate, not just the base model, as suffix codes define solenoid, voltage, and switch options.

Most-Ordered Maxon Products

Browse all 36 →
18110Igniter · 10mm · Auburn I-101 / Eclipse 16160 23739Igniter · 14mm · Auburn I-31-1 / Eclipse 16927 18075Spark plug · 14mm · Combustifume burners 18117Flame rod · direct-mount · L=7.125" · SNF burners 18118Igniter · 18mm · Rajah E9-SSN connector 47789Igniter · 14mm · Kinedizer LE burners 34043Spark igniter · OvenPak II 400 burners MX34042Igniter assembly · OvenPak II 400 burners 27732Flame rod assembly · 20" · 1/2" NPT 150SMA12-FA22-BB21A01-1/2" EM gas valve · shut-off 150SMA12-FA22-BB21B01-1/2" EM gas valve · shut-off 150SMA22-FA22-BB11A01-1/2" EM gas valve · shut-off 150SMA22-FA22-BB11B01-1/2" EM gas valve · shut-off 150SMA21-AA22-BB10A01-1/2" EM gas valve · shut-off 150SMA21-AA22-BB11B01-1/2" EM gas valve · shut-off 57325VOS1/VCS1 switch assembly 572522"–3" RS VCS1/VOS1 switch assembly 1052218Peep port gasket 1053686NP burner gasket All Maxon →Browse all 36 Maxon products

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Frequently Asked Questions — Maxon Igniters & Gas Valves

Common questions from combustion engineers, burner technicians, and industrial maintenance teams about Maxon igniters and electro-mechanical gas valves. Contact us or call (901) 458-2000 with your Maxon part number or burner model.

What does the Maxon 150SMA model number mean?

In the Maxon 150SMA model number: 150 = 1-1/2" nominal pipe size · S = standard flow body · M = motor actuator type. The trailing suffix codes (AA11, FA22, BB21A0, etc.) encode the solenoid package, voltage, switch options, and accessories. Always match the exact full model number from the valve nameplate when ordering a replacement — two valves with different suffix codes are configured differently and are not interchangeable. Call (901) 458-2000 with your nameplate model number to confirm availability.

What is the difference between Maxon automatic reset and manual reset gas valves?

Automatic reset (AR) valves reopen automatically when power is restored to the valve circuit — the motor drives the valve open and the solenoid holds it open while energized. Manual reset (MR) valves require a technician to physically push a reset button after the valve has closed; the valve will not reopen automatically even when power is restored. Manual reset is typically required by NFPA 86 for certain industrial furnace applications where a supervised manual restart is required after a safety shutdown. The reset type is encoded in the valve model number suffix and shown on the nameplate.

What does the VOS1/VCS1 switch assembly (57325, 57252) do?

VOS = Valve Open Switch. VCS = Valve Closed Switch. The 57325 VOS1/VCS1 switch assembly provides position feedback from the gas valve to the flame safeguard control — when the valve is fully open the VOS actuates; when fully closed the VCS actuates. Both are SPDT contacts. Flame safeguard controls typically require proof of valve closure before allowing a new ignition trial, and proof of valve open to confirm gas flow. The 57252 is the same function for 2" to 3" RS valve bodies. These switches are signal duty only — not for operating loads.

Which Maxon igniters cross-reference to Auburn, Eclipse, Crown, and Champion parts?

Key confirmed cross-references: Maxon 18110 = Auburn I-101 · Eclipse 16160 · Crown CA500 · Champion UY-6 (10mm × 1mm thread, self-grounding, 2.72" total length — used on Eclipse AH and Maxon burners). Maxon 23739 = Auburn I-31-1 · Eclipse 16927 · Crown CA506 · Champion F121508 (14mm × 1.25mm thread, 1.5" extension gap — used on Maxon APX burners). Maxon 18075 = Auburn I-31 variant (14mm). Sources: Lesman Industrial, Radwell/Honeywell, BurnerParts.com, Maxon Product Assembly Number document (2016).

Which Maxon burner types use the igniters in stock at Memphis Control Center?

47789 — Kinedizer LE burners. 34043 and MX34042 — OvenPak II 400 series burners. 18118 (18mm with Rajah E9-SSN connector) and 18117 (direct-mounted flame rod) — SNF (Sealed Nozzle Flame) series and other Maxon burner configurations per the Maxon Product Assembly Number document. 23739 — APX series burners. 18110 — Maxon burners and Eclipse AH burners. 18075 — Combustifume burners. Call (901) 458-2000 with your Maxon burner model number to confirm the correct igniter.

Are Maxon electro-mechanical gas valves NFPA 86 compliant?

Maxon electro-mechanical gas valves carry Factory Mutual (FM), CSA, UL, and CE approvals and are rated SIL 3 capable per IEC 61508. They meet Fluid Control Institute (FCI) 70-2 Class VI seat leakage standards. These approvals make them suitable for NFPA 86 (Standard for Ovens and Furnaces) and NFPA 87 (Standard for Fluid Heaters) installations that require listed automatic gas safety shut-off valves. Always confirm your specific application, jurisdiction, and AHJ requirements with a qualified combustion engineer.

Need a Maxon Part or Cross-Reference?

Call us with your Maxon part number, burner model, or old igniter part number (Auburn, Eclipse, Crown, Champion) — we'll confirm availability and same-day shipping from Memphis, TN.

Call (901) 458-2000 Browse All Maxon Products Contact Us

For emergencies, outside of business hours, call #901-604-7069