CONDENSING POTS 


CONDENSING POTS 

Chambers are made from seamless pipe and end caps. The interior of each chamber is cleaned,        removing foreign particles. All pipe connections are  usually 3000#  half-couplings mounted on 90 degree angles (unless otherwise specified) Extra connections can be furnished upon customer request.

Condensate Pots are available in variety of Materials  like Carbon Steel, SS 304, SS 316, Monel, Cu Ni, etc as per the requirement of the customer.

Fabrication of the condensate pots are  as per ASME Sec-IX

There are two terms we need to deal with as they relate to instrumentation…”Condensate pots” and “Seal pots”. Both devices are similar in appearance but have slightly different functions. These terms have other meanings a they relate to steam handling systems.

Condensate Pots.

Condensate pots are used to catch and hold condensate and foreign material. This helps keep manifold orifices clean and free of foreign material. They are located upstream of the instrument and have a bottom drain so that they may be cleaned. We do not often see condensate pots used in this manner for instrumentation. If a condensate pot is used in this manner it will usually require heat tracing.

Seal Pots

Seal pots (sometimes called as condensate pots) are used to allow a liquid seal between the  instrument and flowing gases such as steam. Their function is to keep the liquid level constant in the impulse tubes. For example, in boiler liquid level applications the high pressure (HP) side a differential pressure transmitter is connected to the vapor space on top of the steam drum. Steam condenses in the chamber or seal pot and fills the impulse line with condensate. The seal pot is located to allow the condensate to drain back to the source thus keeping the liquid level constant.

Insulating the seal pot would inhibit its function. The seal pot, unlike the impulse tubes, is not vulnerable to freezing during normal plant operation because it is in constant contact with a heat source, steam. The only time that the seal pot is vulnerable to freezing is if the plant is shut down during freezing ambient temperatures. In this case the seal pot would need to be drained.

 

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