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Gas Valve Service

Expert diagnosis and replacement of gas valves for paint

Function

Controls the flow of natural gas or propane to the burner

Location

Gas train upstream of the burner, typically dual-valve configuration

Typical Lifespan

10-20 years with proper maintenance

Emergency Service Get Service Quote

Service Options

Repair Service

Replacement Service

Preventive Maintenance

24/7 Emergency Available

Signs of Gas Valve Assembly Failure

No gas flow when burner calls for heat

Gas valve doesn't click/open on ignition call

Weak flame or insufficient heating

Gas odor indicating leak at valve

Valve stuck open (continuous gas flow)

What Causes Gas Valve Assembly Failure

Understanding the root cause helps determine whether repair or replacement is the best option.

Solenoid Coil Failure

common

Electromagnetic coil that opens the valve has burned out.

Diaphragm Failure

occasional

Internal diaphragm has torn or stiffened, preventing proper operation.

Seat Wear/Debris

occasional

Valve seat is worn or has debris preventing proper sealing.

Regulator Failure

occasional

Integral pressure regulator not maintaining proper outlet pressure.

Control Signal Issues

occasional

Valve not receiving proper 24V signal from controller.

Repair vs. Replace Decision Guide

Repair When...

Coil can be replaced individually
Signal/wiring issue can be corrected

Replace When...

Internal components have failed
Valve body is corroded or damaged
Valve is obsolete or parts unavailable
Safety concern with continued use

Cost Comparison

Coil replacement $150-300. Complete valve replacement $300-800 depending on type.

Lifespan Considerations

Gas valves are critical safety components. When in doubt, replace rather than repair.

Brands Using This Component

We service gas valve assembly across all major paint booth brands.

Honeywell

VR8300VR8345

White-Rodgers

36E36H

Maxitrol

Regulators

ASCO

Solenoid Valves

Our Gas Valve Assembly Service Process

Gas Pressure Check

Measure inlet and outlet gas pressures to verify supply and regulation.

Electrical Test

Verify control voltage reaching valve coils.

Operational Test

Check valve opening/closing response to control signals.

Leak Test

Test all connections and valve body for gas leaks.

Replace & Commission

Install replacement valve, verify operation, leak test again.

Gas Valve Assembly Service FAQ

Common questions about gas valve assembly repair and replacement

NFPA 86 requires redundant (dual) gas valves for safety. If one valve fails in the open position, the second provides backup shutoff. Both valves must close to stop gas flow—this double-protection prevents gas accumulation.

Some components like coils can be replaced, but gas valves are safety-critical. If the valve body or internal components have failed, replacement is the safe choice. We stock common valve types for quick replacement.

If you have power to the valve (24V typically) but don't hear it click open, or you hear clicking but get no gas flow, the valve has likely failed. Always have a qualified technician diagnose gas equipment.

Have a question not answered here?

Call us at (877) 489-3727

Related Components

Burner Repair Ignition Module Flame Sensor

Related Troubleshooting

Burner Not Igniting Not Heating Gas Valve Problems

Need Gas Valve Assembly Service?

WERCS technicians have the expertise and parts to get your gas valve assembly working properly. 24/7 emergency service available.

Call (877) 489-3727 Request Service Quote