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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.
What else can I help you with?
What is the millivolt range of a gas valve?
The millivolt range of a gas valve is typically around 250 to 750 millivolts. This low voltage is generated by a thermocouple or a thermopile and is used to open and close the gas valve to control the flow of gas.
Is there a difference between liquid check valves and gas check valves?
Yes, there is a difference between liquid check valves and gas check valves. Liquid check valves are designed to prevent backflow in liquid systems, while gas check valves are used in gas systems to control the flow direction of gases. Although they both serve the purpose of preventing backflow, their designs may vary to accommodate the specific properties of liquids and gases.
One millivolt is how much larger than one microvolt?
One millivolt is 1000 times larger than one microvolt.
How does a wellhead work?
A wellhead is a structure positioned at the top of an oil or gas well to control the flow of fluids and prevent leaks. It consists of valves and fittings to regulate pressure and allow for the extraction of oil or gas. The wellhead acts as a barrier between the underground reservoir and the surface equipment.
What is the formula for calculating the work done by an ideal gas in a thermodynamic process?
The formula for calculating the work done by an ideal gas in a thermodynamic process is: Work -PV where: Work is the work done by the gas, P is the pressure of the gas, and V is the change in volume of the gas.
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 millivolt range of a gas valve?
The millivolt range of a gas valve is typically around 250 to 750 millivolts. This low voltage is generated by a thermocouple or a thermopile and is used to open and close the gas valve to control the flow of gas.
What is the difference between millivolt and electronic ignition in gas pool heaters?
A millivolt pool heater has a standing pilot (meaning it is always lit). This uses a small amount of energy as well as it can attract bugs and vermine to its warmth. Millivolt heaters are considered older technology. Electronic ignition heaters have electronics that allow the pilot to be lit only just when you are starting the heater. These electronic componants usually also allow for self-diagnostic features on most heaters. This is considered newer technology and is the direction the industry is moving in. Millivolt heaters are usually slightly less expensive and are easier to work on mechanically, but electronic heaters are becoming more popular and technicians are learning to work on them more and more and they will soon replace Millivolt heaters. You can find great deals and free shipping on both Millivolt and Electronic ignition heaters and more information at www.swimmingpoolsetc.com!
How do you test a millivolt gas valve?
You can test a millivolt gas valve with a multimeter by measuring voltage across the valve terminals while the gas valve is energized. The reading should be in the range of 500-750 millivolts to indicate that the valve is operating correctly. Additionally, you can visually inspect the valve for any signs of physical damage or corrosion.
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.
What are the different types of gas shut off valves available in the market?
The different types of gas shut off valves available in the market include ball valves, gate valves, globe valves, and butterfly valves. Each type has its own unique design and function for controlling the flow of gas in a system.
What is the difference between smart valve and other gas valves?
Smart valves produce gas faster
What is the work of 4 valve in one cylinder head?
Two inlet and two exhaust valves. Multiple valves are usually used because they provide more efficient gas (read air/fuel mixture, or exhaust gas dependent on which valves) flow than one valve of the same surface area.
What is a thousandth of a volt?
A milliVolt.
Is there a difference between liquid check valves and gas check valves?
Yes, there is a difference between liquid check valves and gas check valves. Liquid check valves are designed to prevent backflow in liquid systems, while gas check valves are used in gas systems to control the flow direction of gases. Although they both serve the purpose of preventing backflow, their designs may vary to accommodate the specific properties of liquids and gases.
How did the Colossus get it to work?
using valves
Where cryogenic valves are used?
Cryogenic valves facilitate the transfer of Liquified gas. Space industry, natural gas / petroleum, medical industry, chemicals.
