Fulton Boiler Works · Since 1949 · Pulaski, NY · Family-Owned · ASME · UL Listed · CSA

Fulton Boiler —
OEM Replacement Parts for ICS, ICX, VMP, J Series & EDR Boilers

Memphis Control Center stocks genuine Fulton Boiler OEM replacement parts for commercial and industrial vertical tubeless steam boilers. LWCO relays — 2-40-001421 (LWCO Relay), 2-40-000421 (Low Water Safety Relay), 2-40-001021 (LWCO Relay with Test Function), 2-40-000422 (8-Pin Octal Socket Base), 2-40-000423 (Relay Base). Ignition electrodes — 2-20-000033, 2-20-005019, 2-20-000019, 3-20-000090 (Spark Plug Rod Assembly). Flame rod — 2-40-001011 (Flame Rod with Bushing). Gaskets — 2-12-000554 (Air Flapper Gasket), 2-12-000004 (Handhole Gasket). Air pressure switch — 2-30-000118 (0.17–5.0" WC). Maintenance kit — 4-50-315300 (EDR+3000/2500 12-Month Kit). Fulton Boiler Works invented the vertical tubeless boiler in 1947 and has been manufacturing in Pulaski, New York ever since — over 75 years, more than 100,000 installations worldwide. All Fulton boilers are ASME Code stamped, National Board registered, UL Listed, and CSA Approved. Family-owned, serving Memphis since 1967.

Browse All Fulton Parts Call (901) 458-2000
Genuine Fulton OEM Parts Founded 1949 · Pulaski, NY ICS · ICX · VMP · J Series · EDR ASME · UL Listed · CSA Family-Owned Since 1967
Genuine OEM PartsGenuine Fulton Boiler Works parts — the same parts Fulton installs at the factory. No compatibility guesswork, no substitution risk
ICS · ICX · VMP · J Series · EDRParts covering the most common Fulton vertical tubeless steam boiler series used in commercial and industrial applications
ASME · UL · CSA · National BoardEvery Fulton boiler is built and stamped to ASME Code, UL Listed (the entire boiler — not just components), and CSA Approved
Same-Day ShippingStocked Fulton parts ship same day from Memphis, TN — free. Call (901) 458-2000 for availability and lead times on special order parts
Fulton Boiler Works — the inventors of the vertical tubeless boiler. In 1947, Lewis J. Palm was managing the Sunlight Laundry of Fulton, New York when the plant's steam boiler failed. The failure inspired him to reimagine the boiler's design — vertically oriented, with a smaller footprint and more reliable construction. Lewis invented the vertical tubeless boiler in a small garage next to his home, building the first one from scrap metal from a local scrapyard. Upon receiving his first sale, he tied the boiler to the trunk of his car and drove it hundreds of miles from New York to Michigan. Within a few short years, the design became the most popular steam boiler for dry cleaners and launderers nationally. Fulton Boiler Works, Inc. was formed in 1949 and has been in continuous production ever since. Today, Fulton is led by the third and fourth generation of the Palm family — headquartered at 3981 Port St., Pulaski, NY 13142, with manufacturing in the USA, Great Britain, and China. Over 75 years of continuous production. More than 100,000 installations worldwide. Many Fulton boilers over 30 years of age are still in operation today. Every Fulton boiler is built and stamped to ASME Code, National Board registered, UL Listed (the entire boiler — not just components), and CSA Approved. Fulton's vertical tubeless design has no tubes or coils to rust or burn out — eliminating retubing costs and the associated downtime.

Fulton Boiler Parts at Memphis Control Center

Memphis Control Center stocks genuine Fulton OEM replacement parts for ICS, ICX, VMP, J Series, and EDR boilers. Contact us or call (901) 458-2000 with your Fulton boiler model number and part number to confirm availability and lead time. Always specify your boiler model when ordering — Fulton part numbers can vary by series.

LWCO Relays Low Water Cut-Off Relays — 2-40-001421 · 2-40-000421 · 2-40-001021

The Fulton Low Water Cut-Off (LWCO) relay is one of the most critical safety components on a Fulton vertical tubeless steam boiler. When the boiler water level drops below a safe minimum — detected by the low water probe — the LWCO relay cuts off the burner to prevent dry-firing and boiler damage. These are the most frequently replaced Fulton boiler parts.

Part NumberDescriptionShop
2-40-001421LWCO Relay — current production modelShop
2-40-000421Low Water Safety Relay — earlier productionShop
2-40-001021LWCO Relay with Test FunctionShop
2-40-0004228-Pin Octal Socket Base for LWCO relayShop
2-40-000423Relay BaseShop
⚠ Always confirm part number with your boiler model. The 2-40-001421 replaced the 2-40-000421 in current production — check your boiler's control panel and wiring diagram before ordering. Call (901) 458-2000 for confirmation.
LWCO Safety Relay Low Water Cut-Off ICS · ICX · VMP Series Most Commonly Replaced
Ignition Electrodes Ignition Electrodes — 2-20-000033 · 2-20-005019 · 2-20-000019

Fulton ignition electrodes create the spark that ignites the fuel-air mixture at burner startup on Fulton gas and oil fired boilers. Fulton service manuals require annual inspection of electrodes for carbon buildup, correct gap setting, and porcelain cracks — cracked porcelain requires immediate replacement. Always replace the electrode if the porcelain insulator shows any cracks.

Part NumberDescriptionShop
2-20-000033Ignition ElectrodeShop
2-20-005019Igniter ElectrodeShop
2-20-000019Ignition Rod / IgniterShop
3-20-000090Spark Plug Rod AssemblyShop
2-20-000093Spark Plug GasketShop
5-11-400090Spark Plug BushingShop
Gas & Oil Fired Boilers Annual Inspection Required ICS · ICX · VMP · J Series
Flame Rod & Gaskets Flame Rod · Air Flapper Gaskets · Handhole Gaskets

The Fulton flame rod (2-40-001011) senses the burner flame by ionization current — a fouled or broken flame rod causes nuisance lockouts and failed startups. Fulton gaskets are critical wear items — Fulton service documentation specifies annual gasket inspection and replacement as part of the standard service schedule. The air flapper gasket (2-12-000554), washer (2-22-000038), and screw (2-22-000125) are all replaced together during air damper service.

Part NumberDescriptionShop
2-40-001011Flame Rod with BushingShop
2-12-000554Air Flapper GasketShop
2-22-000038Air Flapper WasherShop
2-22-000125Air Flapper ScrewShop
2-12-000004Handhole GasketShop
2-30-071000O-Ring for 2-30-001696Shop
Flame Rod · Ionization Sensing Annual Gasket Inspection Air Flapper Service Kit Handhole Gaskets
Controls & Maintenance Kits Pressure Switch · Thermocouple · Maintenance Kits · Indicator Lights

Keep your Fulton boiler on a proper maintenance schedule with genuine OEM service parts. The 4-50-315300 EDR+3000/2500 12-Month Maintenance Kit contains the service parts needed for a full annual service on compatible Fulton EDR boilers. The 2-30-000118 Air Pressure Switch (0.17–5.0" WC) proves the combustion air blower is operating before allowing ignition. The 2-40-000801 Type J Thermocouple provides temperature sensing. Fulton service documentation recommends annual maintenance including inspection of all controls, safety devices, probes, gaskets, and electrodes.

Part NumberDescriptionShop
4-50-315300EDR+3000/2500 12-Month Maintenance KitShop
2-30-000118Air Pressure Switch, 0.17–5.0" WCShop
2-40-000801Type J ThermocoupleShop
2-45-000412Indicator Light — Call for HeatShop
2-40-002000Blower Motor, 115/208-230V 1Ph, 1/2HP, 3450RPMShop
2-30-161515Relief Valve, 1"×1.25", 75 PSI, 3,200,000 BTUShop
2-12-000007Site Glass (Gauge Glass)Shop
EDR Annual Maintenance Kit Air Pressure Switch Type J Thermocouple Relief Valve · Sight Glass

Fulton Boiler Parts — Most Searched

These are the Fulton Boiler part numbers most commonly searched by boiler technicians and service contractors. Always have your boiler model number available when ordering — some Fulton part numbers vary by boiler series. Contact us or call (901) 458-2000 if you need help identifying the correct part for your boiler.

Part NumberDescriptionCategoryCompatible Boiler SeriesShop
2-40-001421LWCO RelaySafetyICS, ICX, VMP, J SeriesShop
2-40-000421Low Water Safety RelaySafetyICS, ICX, VMP — earlier productionShop
2-40-001021LWCO Relay with Test FunctionSafetyICS, ICX, VMPShop
2-40-001011Flame Rod with BushingCombustionICS, ICX, VMPShop
2-20-000033Ignition ElectrodeIgnitionICS, ICX, VMPShop
2-20-005019Igniter ElectrodeIgnitionICS, ICXShop
2-20-000019Ignition Rod / IgniterIgnitionVMP, J SeriesShop
3-20-000090Spark Plug Rod AssemblyIgnitionVMP SeriesShop
5-11-400090Spark Plug BushingIgnitionVMP SeriesShop
2-12-000554Air Flapper GasketGasketsICS, ICXShop
2-22-000038Air Flapper WasherGasketsICS, ICXShop
2-12-000004Handhole GasketGasketsICS, ICX, VMPShop
2-30-000118Air Pressure Switch, 0.17–5.0" WCControlsICS, ICX, VMPShop
2-40-000801Type J ThermocoupleControlsICS, ICXShop
2-40-0004228-Pin Octal Socket BaseElectricalICS, ICX, VMPShop
2-40-000423Relay BaseElectricalICS, ICX, VMPShop
4-50-315300EDR+3000/2500 12-Month Maintenance KitMaintenanceEDR SeriesShop
2-30-161515Relief Valve, 1"×1.25", 75 PSI, 3,200,000 BTUSafetyICS, ICX (hot water)Shop
2-45-000412Indicator Light — Call for HeatElectricalICS, ICXShop
2-12-000007Site Glass (Gauge Glass)GaugesICS, ICX, VMPShop
2-40-002000Blower Motor, 115/208-230V 1Ph, 1/2HP, 3450RPMMechanicalICS, ICXShop
2-30-071000O-Ring for 2-30-001696Gaskets/SealsICS, ICXShop
2-20-000093Spark Plug GasketGasketsVMP, J SeriesShop
2-22-000125Air Flapper ScrewHardwareICS, ICXShop

⚠ Compatible boiler series shown are a general guide only. Always confirm part numbers against your specific boiler model's parts list. Contact us or call (901) 458-2000 with your boiler model number and serial number for confirmation.

All Fulton Parts at Memphis Control Center

Browse all →
2-40-001421LWCO Relay 2-40-000421Low Water Safety Relay 2-40-001021LWCO Relay w/ Test Function 2-40-001011Flame Rod with Bushing 2-20-000033Ignition Electrode 2-20-005019Igniter Electrode 2-20-000019Ignition Rod / Igniter 3-20-000090Spark Plug Rod Assembly 5-11-400090Spark Plug Bushing 2-12-000554Air Flapper Gasket 2-22-000038Air Flapper Washer 2-12-000004Handhole Gasket 2-30-000118Air Pressure Switch · 0.17–5.0" WC 2-40-000801Type J Thermocouple 2-40-0004228-Pin Octal Socket Base 4-50-315300EDR+3000/2500 Annual Maint. Kit 2-30-161515Relief Valve · 75 PSI · 3.2M BTU 2-12-000007Site Glass / Gauge Glass 2-40-002000Blower Motor · 1/2HP · 3450RPM 2-45-000412Indicator Light · Call for Heat All Fulton Parts →Browse the full Fulton catalog
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Need a Fulton part not listed on our site?

Call us with your boiler model number, serial number, and the part number from your Fulton parts list — we can source from the full Fulton OEM catalog.

Request a Fulton Part Call (901) 458-2000

Fulton Boiler Parts — Frequently Asked Questions

Common questions about Fulton OEM replacement parts, boiler series compatibility, and maintenance requirements. Contact us or call (901) 458-2000 — Memphis Control Center has been serving the boiler industry since 1967.

What Fulton boiler series do these parts fit?

Memphis Control Center stocks Fulton OEM replacement parts primarily for the ICS and ICX Classic Series (gas and oil fired vertical tubeless steam boilers), VMP Series (10–60 HP vertical tubeless steam boilers), and J Series oil fired steam boilers. Some parts also fit the EDR Series. Always confirm compatibility against your specific boiler model and parts list — Fulton part numbers vary between series and production years. Call (901) 458-2000 with your boiler model and serial number for confirmation.

What is the difference between the 2-40-000421 and 2-40-001421 LWCO relays?

Both are Fulton Low Water Cut-Off (LWCO) relays that protect the boiler by cutting off the burner when the water level drops below a safe minimum. The 2-40-001421 is the current production model and replaced the 2-40-000421. A third variant, 2-40-001021, includes a test function that allows periodic testing of the cut-off function without draining the boiler to low water. Before ordering, confirm which relay your boiler uses by checking the control panel and wiring diagram — or call (901) 458-2000 with your boiler model number.

How often should Fulton boiler electrodes and gaskets be replaced?

Per Fulton's own service documentation, annual inspection and service is required. At each annual service: inspect ignition electrodes for carbon buildup and correct gap — clean if necessary, replace immediately if porcelain shows any cracks. Inspect handhole and inspection hole gaskets — replace if any leakage is evident. The air flapper gasket, washer, and screw are typically replaced together during air damper service. Fulton's EDR series has a 12-month maintenance kit (4-50-315300) containing the parts for a full annual service. Call (901) 458-2000 to confirm you have everything needed for a complete Fulton annual service.

What makes Fulton's vertical tubeless design unique?

Lewis J. Palm invented the vertical tubeless boiler in 1947 (Fulton Boiler Works, Inc. was formed in 1949). Unlike fire-tube designs, Fulton's boiler has no tubes or coils in the heat transfer area — nothing to rust out, burn through, or require periodic retubing. This eliminates retubing costs and the associated downtime. Every Fulton boiler is ASME Code stamped, National Board registered, UL Listed (the entire boiler assembly — not just the burner or electrical components), and CSA Approved. With over 75 years of continuous production and more than 100,000 installations worldwide, many Fulton boilers over 30 years of age are still in operation.

I need a Fulton part not listed on your site — can you source it?

Yes. Memphis Control Center has been sourcing boiler and combustion parts since 1967. If you need a Fulton OEM part not currently listed, call (901) 458-2000 or contact us with your Fulton boiler model number, serial number, and the part number from your boiler's parts list. We can source from the full Fulton OEM catalog for ICS, ICX, VMP, J Series, EDR, Vantage VTG, Pulse, thermal fluid heaters, and other Fulton product lines. Having your model and serial number ready significantly speeds up the parts identification process.

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