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Frequently Asked Questions

I have a thermostatic valve. What should I do?

Radiator cabinets by Coverscreen UK
Although the vast majority of our customers enclose it, the thermostatic valves should ideally remain outside of the radiator cover if they are to sense the temperature of the room correctly. If you would like to keep the thermostatic valve outside of the radiator cover, the side of the cover that the valve is on will need to fit between the radiator and the valve. When fitting, a small cut will need to be made in the cover to receive the pipe between the radiator and the valve.

What is a thermostatic mixing valve?

HRH FAQ's
A TMV is used to control the temperature of the hot water supply to the manifold. It is necessary when the design temperature is significantly lower than the supply water temperature from the heat source. The TMV installs in the plumbing supply and return lines between the manifold and the heat source. It blends return loop water from the manifold and supply water from the heat source to a manually set temperature.

What is a thermostatic radiator valve?

FAQs - About our Designer radiators and towel warmers
A thermostatic radiator valve (TRV) is shown in the image to the right. You will find it on the pipework at the top or bottom of your radiator. It gives you greater control over the heat from each individual radiator. Each TRV can be set to a temperature to suit you, so you can have different temperatures in different rooms.

Q Is the Allegra Valve thermostatic?

Frequently Asked Questions
A No its a manual valve but the 'Traditional' valve found on our valve page, is thermostatic and comes in a range of brass, chrome, and nickel. We are currently manufacturing a further range of traditional style thermostatic valves, and will be adding these to our range in September 07.

What is the difference between a TRV (Thermostatic Radiator Valve) and a manual one?

FAQs & Helpful Information Content
The TRV controls the radiators temperature by sensing the room air temperature and automatically opening and closing the flow to the radiator to maintain a preset temperature. A manual valve controls the temperature of the radiator regardless of how warm the room already is. On large radiators (above 1800 watts, or where the radiator is oversized for the room) we recommend TRV because they save you having to get up to turn the radiator up and down, but they are not essential.

What is the benefit of fitting a thermostatic radiator valve to the radiator?

PURMO | People | Service and support | FAQ
The fitting of a thermostatic radiator valve (TRV) to a radiator gives room temperature comfort control and can help to avoid overheating if a radiator is too large for the room. This piece of equipment provides an extra fine tuning control to central heating, by allowing individual room temperatures to be maintained by sensing room temperature and automatically adjusting the flow of hot water into the radiator.

How should I set my thermostatic radiator valves?

FAQs - About our Designer radiators and towel warmers
It's best to set your TRV to a middle setting and see if the room is warm enough. If the room is too warm, turn the TRV down by 1, if the room is too cold, turn the TRV up by 1. A middle setting corresponds to approximately 20ºC (68F). Do NOT turn the TRV fully ON or fully OFF to make the room you are in warmer or cooler - this will waste fuel. Turn it a little way and let it do the work.

What is a solenoid valve and can I hook one up to a Sterilight system?

Frequently Asked Questions
A solenoid valve is an electrically-activated mechanical valve that opens and closes when power is applied to it. This kind of valve can be installed and wired into a Sterilight system which is monitored. If the UV intensity were to drop below the recommended level the solenoid would then be activated and automatically shut down the flow of water. This will keep contaminated water from getting through the UV system.

What is variable valve timing?

Toyota FAQ (frequently asked questions)
Once upon a time, most engines came with two valves - one to let air and fuel in, and the other to let burned fuel and air out. High-performance engines, such as Chrysler's famous Hemi V8s, came with massive valves. The problem with this was that the big valves were inefficient at lower engine speeds, leading to both gas mileage and pollution problems.

Will the thermostatic controls near my radiators be accessible?

Radiator Covers, Cabinets, Shelves and Radiator Grilles in U...
Yes, they will. Our unique removable magnetic front panels allows access to all radiator parts and valves.

Q - What is the difference between thermostatic and manual valves?

Regal Radiators FAQ's, Cast Iron Radiators, Heated towel rai...
A - Thermostatic valves control the radiator temperature via a sensor which senses the air temperature in the room. Once the preset temperature has been reached the valve automatically opens and closes the flow of hot water to the radiator to maintain that temperature. A manual valve does not control the temperature of the radiator regardless of how warm the room is already. If the room gets too hot, you can turn it off easily. A - They are both measurements of heat output.

Is it hard to do the valve adjustment yourself?

FAQ
Valve adjustments seem to run in the $150-$250 range here in the U.S. It's not impossible to do the job yourself if you're a reasonably proficient mechanic, but you'll need a special Triumph tool to do it. Here's my actually, you can. only one special triumph tool is required, and although it looks spindly as heck, it does the job wonderfully. mine cost $61 (conveniently just at 1.5 hours of time ;-).

How about cheaper valve shims?

FAQ
The valve shims are exactly 25.0 mm in diameter, and I've used some off a Yamaha XJ600 from the local Jap-shop, maybe there are more compatible bikes. Bring your vernier caliper and just check the diameter, you should be fine as I believe the material hardness should be about the same.

How does the engine brake control valve motion?

Jacobs Vehicle Systems - Frequently Asked Questions
A standard technology engine brake consists of a solenoid valve, control valve, and master and slave pistons. These components are assembled into a housing as shown below. When the brake is activated, the solenoid allows oil to pass to the control valve. The control valve moves up and the check ball in the control valve is unseated, allowing oil to fill the master/slave piston circuit.

WHAT IS AN OVERHEAD VALVE?

Frequently Asked Questions - CROMMELINS Machinery
Valve actuation is via pushrod and rocker arm. In a four-stroke engine, the intake and exhaust valves are in the cylinder head. The valve stems are either at an angle or parallel, and the valve discs face the piston.

What is the by-pass valve?

Product FAQs : Air Filters, Oil Filters and Fuel Filters :: ...
Should the oil filter become blocked, the valve will open allowing oil to flow into the engine. (Unfiltered oil is better than no oil).

What's a bleed valve?

Nissan Silvia/200SX/240SX/Gazelle Frequently Asked Questions...
A bleed valve is a simple, mechanical means of raising the boost in a turbocharged engine. The idea is to restrict the amount of air pressure available to operate the wastegate (this works with or without ECCS control). If fitted and set up correctly, they give very good results for a low initial cost. In Australia, you could buy one from TurboSmart or make your own. AutoSpeed ran an article on exactly how to do this, as have Zoom Magazine. A word of warning though.

What is a 2-Way valve?

Pneumadyne - Help
A 2-Way directional control valve provides an on / off function. Actuating the valve allows air to flow from the input port and out the output port.
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