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Q: What is the millivolt range of a gas valve?
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How do millivolt gas valves work?

A millivolt gas valve is used in a standing pilot type of appliance. In a normal application there are actually 2 valves in one. one valve controls gas flow to the pilot and the other part of the valve controls gas flow to the burner. The pilot burns on a device or devices that produce a small amount of electricity ( millivoltage ) some valves accomplish this with a thermopile producing energy for the pilot and the burner portions of the valve. others use a thermocouple to produce energy to keep the pilot open and a thermopile to produce the energy for the burner side of the valve. In a typical gas fireplace valve the pilot runs on 30mV ( millivolts ) and the burner runs on 500 mV. it sounds like alot but it's only .5volts. This energy creates an electromagnet that pulls the valve open against a spring. That is the fail safe and how the pilot safety function works, if for any reason the energy isn't present, the spring snaps the valve shut shutting off the gas. Millivolt valves are NOT field serviceable. They should never be disassembled as they will leak. Most issues with millivolt valves are caused by a simple lack of manufacturer recommended service and maintenance.


One millivolt is how much larger than one microvolt?

2000


Why is it necessary to turn off the gas with the gas cock rather than with the valve on the burner?

When you leave the gas cock open when you turn off the burner valve, and someone moves the burner to another gas port, there would be a serious gas leak until you turned off the gas at the gas cock.


Uses of needle valve in Bunsen burner?

The needle valve is used to control the amount of gas flowing to the burner. The air valve controls the amount of air.


What is the function of solenoid valve in the air conditioner?

solenoid valve function is to hold or handle the flow of gas or liquid pressure

Related questions

Why doesn't my hot water heater light everytime?

If it is gas operated, the hot water heater may not light because it may have a defective millivolt sensor. The millivolt sensor is heated up by the pilot and generates a fractional amount of voltage telling the gas valve that the pilot is lit and the gas valve can now be safely opened to heat the water heater.


How do millivolt gas valves work?

A millivolt gas valve is used in a standing pilot type of appliance. In a normal application there are actually 2 valves in one. one valve controls gas flow to the pilot and the other part of the valve controls gas flow to the burner. The pilot burns on a device or devices that produce a small amount of electricity ( millivoltage ) some valves accomplish this with a thermopile producing energy for the pilot and the burner portions of the valve. others use a thermocouple to produce energy to keep the pilot open and a thermopile to produce the energy for the burner side of the valve. In a typical gas fireplace valve the pilot runs on 30mV ( millivolts ) and the burner runs on 500 mV. it sounds like alot but it's only .5volts. This energy creates an electromagnet that pulls the valve open against a spring. That is the fail safe and how the pilot safety function works, if for any reason the energy isn't present, the spring snaps the valve shut shutting off the gas. Millivolt valves are NOT field serviceable. They should never be disassembled as they will leak. Most issues with millivolt valves are caused by a simple lack of manufacturer recommended service and maintenance.


How millivolt switch works?

I am assuming that you mean switching a millivolt gas value. The switch applies a voltage to the gas valve thus allowing gas to flow. The voltage is provided by a thermopile. This device transforms the heat from the pilot into a voltage that can be used to control the valve. This system does not require an external voltage source. It does require the pilot to continuously operate. A thermopile consists of a number of thermocouples that are wired in series. This allows an increase in the voltage that would be provided by a single thermocouple.


How do you produce 230 volt by thermocouple action?

You don't, a thermocouple's output is in the millivolt range.


Can you improve voltage level in the range of millivolt into a 15volt?

A voltage amplifier (high input and output impedances) with a gain of 83.5 dB will amplify a signal of 1 millivolt to an output of 15 volts.


Does the safety valve on a gas range opens when the thermocouple detects no pilot flame?

yes


How can I Convert a restaurant U.S. Range oven from gas to propane?

In order to convert a gas range to propane, one must change the inlet valve. There flow rate of the gas must also be adjusted too.


What is an redundant gas valve.?

A redundant gas valve is a type of gas valve that controls how gas passes to a burner. It is used in gas-fueled equipment, such as gas furnaces.


What is a thousandth of a volt?

A milliVolt.


What is the reason for a furnace to go through all the systems of operations and the ignitor sparks but no gas?

Typically, it is going to be the gas valve. The system sends a 24 volt signal to the gas valve and it opens. I you are getting 24 vols to the gas valve and no gas, it will be the valve.


What is a millivolt ignition?

It's a standing pilot light, the flame also produces constant low levels of electricity (Millivolts) to control the safety and gas valves.


What is the plural of gas range?

The plural form of the compound noun 'gas range' is gas ranges.