Radiator Valves Used in Transformers

 Commonly Asked Questions, on Radiator Valve for Transformers.

Q1: What is a radiator valve for transformers?

A: Radiator valves are important components in power transformers. They are designed to control the flow of coolant (often oil) between the transformer and its radiator. These valves allow for the easy isolation of the radiator for maintenance or replacement without interrupting the transformer's operation.

Q2: What is the function of a radiator valve in a transformer?

A: A radiator valve's primary function is to regulate the flow of coolant, often transformer oil, from the transformer to its radiator. By controlling the flow of this coolant, the valve contributes to the efficient cooling and overall performance of the transformer.

Q3: How does a radiator valve work in a transformer?

A: When the transformer is in operation and generating heat, the radiator valve opens to allow transformer oil to flow from the main tank into the radiators. This helps in dissipating the heat from the transformer oil to the environment. When the transformer is not operating or during maintenance, the valve can be closed to isolate the radiator.

Q4: What are the different sizes of Radiator Valves available?

The radiator valves are generally available in 50, 80, 100, 150 , 200 and 250 mm bore size.

Are there any Indian Standards for Radiator Valves?

Currently there are is no Indian Standard for radiator valves and it is mostly manufactured as per widely accepted industry standards.

Are radiator valves leakproof?

Radiator valve manufactured in India have metal to metal contact between the flap and the body. Due to this up to 6 drops per minute are expected from the flap in the closed condition.

Are there leakproof radiator valves?

Yes leakproof valves can be manufactured on special request with special rubber sealings.

When should gun metal body used in radiator valves?

Generally the body of the radiator valves is made of cast iron which is painted to prevent rust. In special cases where valves are to be used in highly corrosive atmosphere or for some reason it is not advisable to use CI body. Gun Metal valves may be used. However careful commercial consideration should be given because gun metal body valves are much more almost 10x more costly as compared to standard radiator valves.

If the spindle of the valve breaks can it be repaired on site?

The spindle is riveted to the flap of the valve, if for some reason the spindle breaks it cannot be replaced on site. The only option is to replace the damaged valve with a new one.

I hope this information was helpful, if you require any more information please do let me know.

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