Name: SRV14D0467 VALVE MV VF – Natural Gas – Millivolt ODS
Brand: Hearth.Parts
SKU: SRV14D0467
Price: 303.0 USD
Availability: InStock

SRV14D0467 VALVE MV NG NG fireplace replacement part

SRV14D0467 VALVE MV VF – Natural Gas – Millivolt ODS

$303.00

SRV14D0467 VALVE MV VF – Natural Gas – Millivolt ODS

$303.00

1 left

✔ In stock — Usually ships in 1–2 business days

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What This Part Does

This millivolt ODS gas valve controls the flow of gas to both the pilot assembly and the main burner in a vent-free fireplace, stove, or gas log set.

The valve contains a safety magnet that is energized by the thermocouple when the pilot flame is proven. If the pilot flame goes out or the ODS safety system detects unsafe operating conditions, the valve automatically shuts off gas flow.

When sufficient millivoltage is produced by the thermopile, the valve allows operation of the main burner through a wall switch, thermostat, or remote control system.

The valve also regulates gas pressure to ensure proper pilot and burner performance. Internal wear, contamination, regulator failure, or safety magnet failure can prevent proper operation.

Gas valves are model-specific and must be matched to the correct manufacturer, gas type, and appliance model.

Not sure if this is the right part?

Before ordering, check the following:

Locate your model number (typically behind the lower louver or inside the control compartment)
Confirm your unit uses a millivolt ODS system
Confirm your gas type is natural gas
Compare your existing valve to the images provided

⚠️ This part is NOT for standard millivolt, IPI, or non-ODS pilot systems
⚠️ This part is NOT for propane (LP) units

Compatible Models

Majestic Gas Fireplaces:
DV360
DVB4136

Majestic Gas Log Sets:
UVL18
UVL24
UVL30
UVLST24M
UVLX18
UVLX24
UVLX30
UVLXM24
VL24M
VL24MLP

Monessen Gas Fireplaces:
32VFH
32VFHC
32VFSC
36VFH
36VFHC
42VFH
42VFHC
DFC32
DFC36
DFC42
DFS32
DFS3224
DFS3224A
DFS32A
DFS32C
DFS36
DFS36A
DFS36C
DFS42
DFS42A
DFS42C
DFX32
DFX32C
DIS33
DIS33C
DIS33D
DIS33G
DZC36
DZS36
MCFS36
VFC24CNI
VFC24CNV
VFC24CPI
VFC24CPV
VFC24LNI
VFC24LNV
VFC24LPI
VFC24LPV
VFC32CNI
VFC32CNV
VFC32CPI
VFC32CPV
VFC32LNI
VFC32LNV
VFC32LPI
VFC32LPV
VFF32CNI
VFF32CNV
VFF32CPI
VFF32CPV
VFF32LNI
VFF32LNV
VFF32LPI
VFF32LPV
VFF36CNI
VFF36CNV
VFF36CPI
VFF36CPV
VFF36LNI
VFF36LNV
VFF36LPI
VFF36LPV

Monessen Gas Inserts:
VFI33CNI
VFI33CNV
VFI33CPI
VFI33CPV
VFI33LNI
VFI33LNV
VFI33LPI
VFI33LPV

Monessen Gas Log Sets:
18HVFL
18NB
18TPB
18VL
18VLS
2430VL
24HVFL
24NB
24TPB
24VFS
24VFSC
24VLS
30TPB
C28VF
CSVF20S
CSVF30S
CSVF30SNVEMB
CSVF30SNVG
CSVF30SPVEMB
CSVF30SPVG
DCS
DEB20
DEB20NM
DEB20NV
DEB20PM
DEB20PV
DEB24
DEB24NV
DEB24PM
DEB24PV
DEB30
DEB30NV
DEB30PV
DFX24
DFX24C
DL18MILLIVOLT
DL2428MILLIVOLT
DLX18BMILLIVOLT
DLX18MILLIVOLT
DLX2428BMILLIVOLT
DLX2428MILLIVOLT
DLY18
DLY2428
DNF24
DSS
DST30
DYD2418
DYS2418
EYF18
EYF18NM
EYF18NV
EYF18PM
EYF18PV
EYF24
EYF24NM
EYF24NVB
EYF24PM
EYF24PV
GG18NV
GG24NV
HVFL18
HVFL24
LUMVFNM
LUMVFNV
LUMVFPM
LUMVFPV
LYR18NV
LYR18PV
LYR24NV
LYR24PV
LYR30NV
LYR30PV
NB18
NB18NV
NB18PV
NB24
NB24NV
NB24PV
NBST27
NBST27NVB
NBST27PVC
PH18
PH18NM
PH18NV
PH18PM
PH18PV
PH24
PH24NM
PH24NV
PH24PM
PH24PV
TPB18
TPB18NV
TPB18PV
TPB24
TPB24NV
TPB24PV
TPB30
TPB30NV
TPB30PV
VFCS20D
VFCS30D

Monessen Gas Stoves:
PL20Parlor
RadianceUVOperableDoor0003380
RadianceUVOperableDoor0003381
SS28VF
StardanceUV0004050
StardanceUV0004051
VFSS

Vermont Castings Gas Stoves:
0003225
0003226
0003227
0003228
0003229
0003230
0003231
0003232
0003350
0003351
0003352
0003354
0003360
0003361
0003362
0003363
0003364
0003365
0003366
0003367
0003368
0003369
0003390
0003391
0003392
0003393
0003394
0003395
0003396
0003397
0003398
0003399
33XDV
36XDV
DutchwestNV2467
DutchwestNV2468
OXDV30NVSB
OxfordDirectVentOXDV30
RadianceRDVOD
RadianceRNVOD
SD30NV
SD30PV
StardanceDirectVent
StardanceSDV30
UV36RN
UV36RP
UVC36
UVC43
UVS36
UVS43
VFL34RN

System Type

This is a millivolt ODS standing pilot system. These systems are commonly used on vent-free gas fireplaces, vent-free gas stoves, and vent-free gas log sets.

The system uses a continuously burning pilot flame to heat the thermocouple and, on many models, a thermopile. The thermocouple proves the pilot flame and keeps the pilot safety circuit open. The thermopile generates millivoltage used to operate the main burner through a wall switch, thermostat, or remote receiver.

This system commonly includes:

ODS pilot assembly — monitors the pilot flame and oxygen-sensitive air mixture for safe operation.
Thermocouple — keeps the pilot gas valve open when the pilot flame is proven.
Thermopile — generates millivoltage to operate the main burner circuit.
Millivolt gas valve — controls pilot and burner gas flow.
Piezo igniter or electrode — provides manual spark ignition for lighting the pilot.

The ODS pilot is designed to shut the appliance down if the pilot flame becomes unstable or if oxygen levels fall below the appliance’s safety threshold.

Because ODS systems depend on a precise pilot air intake, dust, lint, pet hair, or spider webs can cause a weak pilot flame, nuisance shutdowns, or failure of the pilot to stay lit.

Need help troubleshooting this system?

Use our interactive troubleshooting wizard for this control system.

Sit Millivolt Troubleshooting Wizard

Control System: Sit Millivolt

Interactive diagnostic guide for this fireplace system.

{"start":"sit_mv_start","steps":{"sit_mv_start":{"title":"SIT Millivolt Troubleshooting","question":"What problem are you having with this SIT millivolt system?","help":"SIT millivolt standing pilot systems use a pilot assembly with a thermocouple for pilot safety and a thermopile to generate millivolts for the main valve circuit. Choose the symptom that best matches the fireplace behavior.","professionalHelp":"This guide involves gas, pilot flame, thermocouple, thermopile, valve, and live gas testing. If you are not qualified to service gas appliances, stop and request professional help.","showContactForm":true,"stop":false,"options":[{"text":"Pilot will not light","next":"sit_mv_pilot_no_light","pathText":"Pilot will not light","showContactForm":true},{"text":"Pilot lights but will not stay lit","next":"sit_mv_pilot_wont_stay_lit","pathText":"Pilot will not stay lit","showContactForm":true},{"text":"Pilot stays lit but burner will not turn on","next":"sit_mv_pilot_lit_no_burner","pathText":"Pilot stays lit but burner will not turn on","showContactForm":true},{"text":"Burner comes on from switch/remote but is weak or unreliable","next":"sit_mv_switch_remote_issue","pathText":"Switch or remote issue","showContactForm":true},{"text":"Sooting or poor flame appearance","next":"sit_mv_sooting","pathText":"Sooting or poor flame appearance","showContactForm":true}]},"sit_mv_pilot_no_light":{"title":"Pilot Will Not Light","question":"The pilot will not light.","help":"For the pilot to light, the system needs fuel, oxygen, and ignition. Verify the gas shutoff valve is open and that gas is reaching the pilot. If air is in the gas line, the pilot may not light until the line is purged.Check the pilot tube and pilot orifice for blockage. If there is no spark at the pilot hood, verify the piezo ignitor is grounded, the electrode wire is connected, the ceramic is not cracked, and the electrode gap is approximately 1/8 inch.If fuel is present, the electrode gap is correct, and there is still no spark, the piezo ignitor may need replacement.","professionalHelp":"Pilot lighting and gas-line checks should be performed by a qualified service technician.","showContactForm":true,"stop":true,"options":[]},"sit_mv_pilot_wont_stay_lit":{"title":"Pilot Lights But Will Not Stay Lit","question":"The pilot lights while holding the knob in, but goes out when released.","help":"The pilot flame should engulf the top 3/8 inch of the thermocouple. If the flame is too small or not centered on the thermocouple, adjust the pilot flame at the SIT valve pilot adjustment.If the pilot flame cannot be adjusted, check inlet pressure. Minimum inlet pressure should typically be 4.5 inches W.C. for natural gas and 11.0 inches W.C. for LP. If pressure is correct, check for the correct pilot orifice and a bent or restricted pilot tube.Confirm the thermocouple is installed tightly into the valve. It should be hand tight plus approximately 1/4 turn. Do not overtighten.If the pilot flame is correct and the thermocouple is tight, test thermocouple output. With the pilot lit, 15 mV or more indicates the valve is bad. Less than 15 mV indicates the thermocouple is bad.","professionalHelp":"Thermocouple and valve testing should be performed by a qualified service technician.","showContactForm":true,"stop":true,"options":[]},"sit_mv_pilot_lit_no_burner":{"title":"Pilot Stays Lit But Burner Will Not Turn On","question":"The pilot stays lit, but the main burner will not come on.","help":"On an SIT millivolt system, the thermocouple keeps the pilot valve open, but the thermopile powers the main burner circuit. If the pilot stays lit but the burner will not turn on, the problem is not usually the thermocouple.With the pilot lit and the ON/OFF rocker switch in the OFF position, measure DC millivolts between TP and THTP on the SIT valve. The reading should be at least 325 mV. If the reading is below 325 mV, replace the thermopile.If thermopile output is good, remove the wires from the valve operator and check resistance between TH and TP. The SIT valve should read approximately 2.25 ohms, plus or minus 0.5 ohms. If outside that range, replace the valve.","professionalHelp":"Millivolt and valve resistance testing should be performed by a qualified service technician.","showContactForm":true,"stop":true,"options":[]},"sit_mv_switch_remote_issue":{"title":"Wall Switch, Thermostat, or Remote Issue","question":"The pilot is lit, but the burner does not respond correctly to the wall switch, thermostat, or remote.","help":"First confirm thermopile output and valve resistance are correct. Then inspect the wall switch, thermostat, remote receiver, and low-voltage wiring.With the wall switch ON, measure DC millivolts between TH and THTP. The reading should be less than 80 mV. If it is higher than 80 mV, disconnect the wall switch or remote wiring and test again. If the burner comes on, check wire gauge, wire length, wire connections, and the switch or remote receiver.Wall switch runs should generally use 18 AWG minimum wire and should not exceed the manufacturer-recommended length.","professionalHelp":"Low-voltage switch and remote diagnosis should be performed by a qualified technician.","showContactForm":true,"stop":true,"options":[]},"sit_mv_sooting":{"title":"Sooting or Poor Flame Appearance","question":"The fireplace is sooting, burning dirty, or has poor flame appearance.","help":"Sooting is commonly caused by incorrect manifold pressure, incorrect orifice size, improper air shutter setting, blocked or incorrect venting, burner misalignment, excessive ember material, poor log placement, or a glass seal issue.Natural gas manifold pressure is commonly 3.5 inches W.C. and LP is commonly 10.0 inches W.C., but always verify against the rating plate and installation manual. Do not guess — use a manometer.Confirm the burner is seated tightly on the orifice, the correct burner and orifice are installed for the fuel type, and the log placement matches the appliance manual. Incorrect rock wool or ember placement can also cause sooting.","professionalHelp":"Sooting can create carbon monoxide risk. Gas pressure and combustion issues should be checked by a qualified technician.","showContactForm":true,"stop":true,"options":[]}}}

Common Problems This Valve May Fix

Pilot lights but will not stay lit
Pilot remains lit but the main burner will not ignite
Main burner operates intermittently
Gas valve will not open when the wall switch or thermostat is activated
Burner shuts off unexpectedly during operation
Pilot and burner operation becomes unreliable after the valve warms up
Internal safety magnet failure preventing normal operation
Sticking or failing valve regulator causing improper gas flow

The gas valve is the primary safety and control component in a millivolt ODS system. It controls gas flow to both the pilot assembly and the main burner.

When the ODS pilot assembly heats the thermocouple, the valve's internal safety magnet remains energized, allowing pilot gas flow to continue. When the thermopile generates sufficient millivoltage, the valve can also open the main burner circuit.

A failing valve may cause pilot dropout, burner ignition failure, intermittent operation, or complete loss of gas flow even when other components test properly.

Before replacing the valve, verify proper thermocouple output, thermopile output, gas supply pressure, and ODS pilot performance, as these components can produce similar symptoms.

Warranty Information

This product includes a 12-month warranty from the date of purchase. This warranty covers defects in materials or workmanship under normal operating conditions.

Fireplace components must be properly installed and matched to the correct system (millivolt vs IPI, natural gas vs propane).

This warranty does NOT cover:
• Improper installation or incorrect application
• Use with the wrong gas type (NG vs LP)
• Misdiagnosis of the issue
• Damage caused by other failing components
• Normal wear and tear
• Labor, service, or diagnostic time

Because many fireplace issues can be caused by multiple components, we strongly recommend confirming the diagnosis before replacing parts.

We are happy to assist with this. Proof of purchase is required for all warranty claims. Please contact us prior to removal or replacement of the part so we can help verify the issue and guide the warranty process.

How do I know if my valve is bad?

Common signs of a failing gas valve include the pilot staying lit but the burner not turning on, no response from a wall switch or remote, intermittent operation, or the burner shutting off unexpectedly.

In some cases, the valve may fail to open and allow gas to flow, even though the system is calling for heat. You may also notice inconsistent flame behavior or complete loss of burner function.

Before replacing the valve, it is important to verify that other components such as the thermopile, thermocouple, ignition module, or wiring are functioning properly, as these can cause similar symptoms.

How difficult is this part to replace?

Replacing a gas valve is considered a moderate to advanced repair because it involves working with gas lines and critical safety components.

The process typically requires shutting off the gas supply, disconnecting and reconnecting fittings, and ensuring all connections are properly sealed and leak-free. In many cases, adjustments or system checks are also needed after installation.

For safety and proper operation, installation is recommended to be performed by a qualified technician.

Is this a safe DIY repair?

Gas valve replacement involves working with gas lines and safety-critical components, so it is generally not recommended as a DIY repair for most homeowners.

Improper installation can result in gas leaks, unsafe operation, or damage to the fireplace system. Correct procedures, proper tools, and leak testing are essential to ensure safe operation.

For safety and reliability, installation is recommended to be performed by a qualified technician.

Do I need any special tools to install this?

Gas valve replacement typically requires standard hand tools such as wrenches and screwdrivers, along with gas-rated thread sealant or tape for proper sealing of fittings.

A manometer may also be needed to verify proper gas pressure after installation, and leak detection solution is required to ensure all connections are safe and secure.

Because proper setup and testing are critical for safe operation, installation is recommended to be performed by a qualified technician.

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SRV14D0467 VALVE MV VF – Natural Gas – Millivolt ODS

Need help troubleshooting this system?

Sit Millivolt Troubleshooting Wizard