Dometic Atwood Hydro Flame Furnace Gas Valve | 31098 | Dual-Sol

Restore reliable gas flow control on your Atwood Hydro Flame furnace with the Dometic Atwood 31098 OEM Hydro Flame Furnace Gas Valve. Genuine Dometic Atwood OEM gas valve with dual-solenoid design for secondary leak protection, integrated pressure regulator, and 12V DC operation. Broad compatibility across AFSD, AFSAD, AFMD, and DFMD Atwood furnace series.

What This Valve Does

The furnace gas valve controls the flow of propane to the burner based on 12V DC signals from the furnace control board. It:

• Starts and stops the flow of gas to the burner in response to control board signals
• Regulates gas pressure via integrated pressure regulator (9.5 to 10.5 in. WC)
• Provides dual-solenoid backup protection against gas leaks through valve seals

⭐ Dual-Solenoid Design — Secondary Leak Protection

Critical safety feature: the dual-solenoid design provides secondary protection against gas leaking through the valve seals. Two valves perform the same task, so there is always a backup valve providing the needed protection. Meaningful safety margin over single-solenoid designs.

⭐ Integrated Pressure Regulator

An internal pressure regulator is attached to the valve, reducing the outlet pressure to between 9.5 and 10.5 in. WC — standard furnace operating pressure for consistent burner performance.

Physical Configuration

• Side Outlet: Outlet is at a 90° angle from the inlet
• Inlet: 3/8" Male Flare connection
• Outlet: Female fitting for the orifice (orifice NOT included)
• Nominal Dimensions: 2-3/4"W × 3-1/2"L × 2-7/8"

⚠️ CRITICAL — Three Valve Versions Exist, Compare Images

Important fitment note: there are three versions of gas valves applicable to the models listed below. You MUST compare your existing unit to the product image before ordering.

Related valve part numbers that look slightly different from this one:

• 31096
• 31097

The 31096, 31097, and 31098 units are all interspersed amongst the compatible SKUs listed below. Careful visual comparison against product photos is essential to ensure you order the correct version for your specific furnace.

Compatible Atwood Furnace Models

Broad compatibility across Atwood/Dometic furnace lineup — but see the critical version-comparison warning above.

AFSAD / AFSD Series:

• AFSAD12111, AFSAD12121, AFSAD12131, AFSAD12141
• AFSD12111, AFSD16111, AFSD20111
• AFSD12121, AFSD16121, AFSD20121
• AFSD12131, AFSD16131, AFSD20131
• AFSD12141, AFSD16141, AFSD20141

AFMD Series (16K through 35K BTU):

• AFMD16111, AFMD20111, AFMD25111, AFMD30111, AFMD35111
• AFMD16121, AFMD20121, AFMD25121, AFMD30121, AFMD35121
• AFMD16131, AFMD20131, AFMD25131, AFMD30131, AFMD35131
• AFMD16141, AFMD20141, AFMD25141, AFMD30141, AFMD35141
• AFMD16151, AFMD20151, AFMD25151, AFMD30151, AFMD35151

DFMD Series:

• DFMD16111, DFMD16121

Related Atwood/Dometic Furnace Components

If you're servicing an Atwood/Dometic Hydro Flame furnace:

• Dometic Atwood 31501 Hydro Flame Igniter Control Board — DC — 12V ignition control board (broad Atwood/Dometic compatibility including AFSD, AFMD, DFMD series)
• Dometic Atwood 30621 AFL Igniter Control Board — AC — 120V Park Model AFL furnaces

Electrical Specifications

• Voltage: 12V DC
• Amp Draw: 0.48 A
• Max Pressure: 0.5 PSI

Cross-Reference Part Numbers

• Primary Part Number: 31098
• Additional Part Number: 38611
• ⚠️ Similar but different variants (compare images!): 31096, 31097

⚠️ Professional Installation Required

Installation involves propane gas connections, 12V DC electrical wiring, and integration with the furnace burner assembly. Because of the safety-critical nature of gas valve components, installation should be performed by a qualified RV service technician. Improper installation can result in gas leaks, fire, or explosion hazards. Always test all gas connections with leak detection solution before returning the furnace to service.

Limited 90-Day Manufacturer Warranty

Genuine Dometic Atwood OEM

Key Features

• Genuine Dometic Atwood OEM Hydro Flame furnace gas valve
• Part number: 31098 (Additional: 38611)
• Dual-solenoid design — secondary protection against gas leaks
• Integrated pressure regulator — 9.5 to 10.5 in. WC output
• 12V DC operation, 0.48A
• Side outlet — 90° from inlet
• Inlet: 3/8" Male Flare
• Outlet: Female fitting for orifice (orifice NOT included)
• ⚠️ Compare product image to your existing valve before ordering — 31096, 31097, and 31098 look similar but are different
• Broad AFSAD/AFSD/AFMD/DFMD compatibility — see full model list
• Nominal dimensions: 2-3/4"W × 3-1/2"L × 2-7/8"
• Backed by limited 90-day manufacturer warranty

Specifications

• Brand: Dometic (Atwood)
• Series: Hydro Flame
• Part Number: 31098
• Additional Part Number: 38611
• Similar Variants (visually distinct — compare images): 31096, 31097
• Type: Furnace Gas Valve
• Design: Dual-Solenoid with integrated pressure regulator
• Outlet Position: Side (90° from inlet)
• Inlet Size: 3/8" Male Flare
• Outlet Size: Female fitting for orifice
• Voltage: 12V DC
• Amp Draw: 0.48 A
• Max Pressure: 0.5 PSI
• Output Pressure (regulated): 9.5 - 10.5 in. WC
• Nominal Dimensions: 2-3/4"W × 3-1/2"L × 2-7/8"
• Compatible AFSAD Models: AFSAD12111, AFSAD12121, AFSAD12131, AFSAD12141
• Compatible AFSD Models: AFSD12111, AFSD16111, AFSD20111, AFSD12121, AFSD16121, AFSD20121, AFSD12131, AFSD16131, AFSD20131, AFSD12141, AFSD16141, AFSD20141
• Compatible AFMD Models: AFMD16111, AFMD20111, AFMD25111, AFMD30111, AFMD35111, AFMD16121, AFMD20121, AFMD25121, AFMD30121, AFMD35121, AFMD16131, AFMD20131, AFMD25131, AFMD30131, AFMD35131, AFMD16141, AFMD20141, AFMD25141, AFMD30141, AFMD35141, AFMD16151, AFMD20151, AFMD25151, AFMD30151, AFMD35151
• Compatible DFMD Models: DFMD16111, DFMD16121
• Warranty: Limited 90-day manufacturer warranty