A Brief on Condensate Pot: Advantages, Functions & Installations


What are condensate pots?

Firstly, we start with the basic and then go further into the topic. Now tell us what actually condensate pots are and what purpose they serve for. Actually, it is a piece of equipment specially designed to catch and then hold foreign materials found in the pipeline application, which also called as seal pots. Typically, they are used in chemical, gas, oil, and petrochemical industries.

On the other hand, it can be accessed by heavy equipment manufacturers, aerospace businesses, shipbuilding industries, and so on. It can be installed in both vertical and horizontal positions, which make it a perfect solution to all types of pipelines. However, if multiple condensate pots are installed, it is vital to make sure that they are mounted at the same level to remove possible errors.

How to Install a Condensate Pot?

Installation can be either vertical or horizontal lines between the primary (Flow Meter) and the secondary (transmitter/ gauge) to act as a barrier to the line fluid permitting direct sensing of the flow conditions.

These Units should be mounted at the same level minimizing possible error that could arise due to unequal head of fluid in the connecting pressure lines.

  1. Evaluate the number of connections required on the condensate pot before ordering (inlets, outlets, fill port, drain port, gas vent port, etc)
  2. Define condensate pot volume in liters and system pressure and temperature requirements.
  3. Consider the need to trace heat and insulate all impulse lines.
  4. Keep vapor impulse lines as short as practicable.
  5. Ensure both condensate pots are mounted at the same level. The higher connection point should be the reference. Consider both Vertical and horizontal steam pipelines.
  6. The differential pressure measuring device (DP) should be mounted below both the condensate pots and the steam pipeline.
  7. It is recommended that both impulse lines from the condensate pot to the DP include the facility for ‘blowdown’. Blowing down these lines periodically ensures that the collection of debris is prevented from impacting the measurement accuracy.

Some Installation Tips

Keep the length of impulse lines as short as possible.
Insulate the impulse lines so that they don’t lose heat.
Add an anti-freeze agent such as glycol in the set-up so that liquid does not freeze.
Install a blowdown mechanism between the condensate pots and the differential pressure transmitter so that inert material does not accumulate.

Condensate Pot Function and Advantages

Condensate pots find its use largely in steam applications but they can be used for any vapour system which has the potential to get condensed during the process or if the vapour is saturated with liquid.

Condensate pots are used to aid the differential pressure flow measurement device so that the accuracy of the readings does not decrease.

A flow measurement device is a combination of the flow measurement set-up, such as the orifice plate set-up and a transmitter; in this case it is a differential pressure transmitter. A line connects both of them which is called as impulse line. There are two impulse lines, one originating from the side of high pressure tapping and the other from the side of low pressure tapping. The steam flows in to the lines from both the sides. The difference of the pressure is used to calculate the flowrate and then the information is transmitted to the control room for monitoring purpose.

The steam used in process industries is often saturated in nature hence it has tendency to increase or decrease the amount of liquid based on if heat is removed or added to the saturated steam respectively. While the steam is moving through the impulse line it may lose heat due to some or the other reason and get condensed and the condensation may be uneven in both the lines. This causes the readings to become erroneous and the differential pressure transmitter transmits the erroneous readings to the control room. The control room personals may assume that nothing is wrong with the readings and according make changes by increasing or decreasing the flow which will affect the processes downline as well. It may take a lot of time for the actual problem to be detected if the values of the variables downline appear faulty.

Condensate pots are installed between the flow measurement set-up and the differential pressure transmitter in order to collect the liquid which gets condensed while the steam is moving through the impulse line. Thus the setup has a column of water and then steam which exerts pressure on the water. In order to ensure the readings are not erroneous, both the condensate pots need to be installed at the same level and the level of the liquids in both the pots should be same. If the level of liquid in one of the pot is higher than the other then this additional weight of water will introduce an error in the readings and the differential pressure transmitter will transmit the erroneous readings to the control room.

The condensate is drained from the bottom valve connection.

Materials

We manufacture and export Condensate Pot in widest range possible. It is available in Stainless Steel 316, Stainless Steel 304, Carbon Steel ASTM A106, Carbon Steel ASTM A105, Alloy Steel ASTM A335 P11, Alloy Steel ASTM A335 P22, Monel 400, ASTM A335 P91. Aluminum and copper cannot be used for the Pot chambers due to their softer natures

Condensate Pot Design

Condensate Pots are fabricated from Seamless pipe. Standard pipe sizes are 2″ to 6″. Connection fittings are then installed on Condensate Pots be it NPT or welded socket adaptors, Butt Weld…etc. Condensate Pots Drawing available for your custom made needs.

Additional Advantages

The condensate pots are able to trap any foreign material and prevent them from reaching the sensitive instrumentation component. Thus they are saved from getting damaged.
If a sudden increase in temperature is made in the steam then it may cause some liquid inside the condensate pots to get flashed, if no liquid level was maintained inside the condenser pots then it would result in highly erroneous readings.

View Our Condensate Pot Product

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