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  1. Blow down valves

Blow down valves

Blow down valves

The purpose of blowdown valves is to depressurize the equipment by sending the unwanted gases to flare. Blowdown valves are emergency on-off valves activated by a signal from the Emergency Shut Down (ESD) system, rather than direct activation by overpressure in the protected equipment. Blowdown valves are on-off valves, often installed in a parallel configuration to pressure relief valves on equipment. This depressurization is different than equipment protection performed by pressure relief valves. Certain on-off valves are closed on emergency shutdown (ESD) of a system. Closing of these valves can lead to overpressure in some process equipments. At the same time, ESD system sends signal to open up the blowdown valves and to release the excess gas to flare, thus preventing an overpressure scenario.

Since blowdown valves are simply on-off valves, they cannot restrict the gas flow. The blowdown lines are often equipped with restriction orifices downstream of blowdown valves to restrict the gas flow being sent to the flare to a certain limit.

The term gas blow down is referred to venting of gas accumulated in equipments, process facilities, oil production wells etc. The gas which is to be blown down is not desired to be used for production of a variety of possible reasons and is usually vented through a flare. The flare burns the hydrocarbons before venting product gases to atmosphere.

Gas blowdown in pressure vessels

Emergency shutdown of some processing facilities may end up in sending high pressure gas to certain other pressure vessels, leading to overpressure. To prevent this overpressure scenario, these pressure vessels should be equipped with blowdown valves in addition to the pressure relief valves. Blowdown valves are triggered by the same emergency shutdown to open up and send the excess gas to vent or flare.
Gas blowdown in oil production wells

Oil production wells which have been shut in for a period, can develop a gas cap at the wellbore by accumulation of the gases percolating through the formation. It is desirable to remove this gas cap by flaring the accumulated gases before starting well intervention. This flaring of gases is referred to as casing blowdown.

Other equipments connected to the well to handle the produced fluids are often equipped with blowdown valves as well. These blowdown valves act to prevent the overpressure in case of emergency shoutdown as discussed above.

Hermann Burners

ITT Controls also supplies products and components made by Herrmann Oil and Gasburner. The long experience as a manufacturer of oil and gas burners gives the best solution to customers economically, technically and environmentally a brand can offer. The high quality standard of these products is documented by the quality management system according to DN and ISO 9000: 2000.

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Digitap Instruments

ITT Controls also supplies products and components from Digitap. In the petrochemical and process industry these products are widely used and indispensable for every / HVAC maintenance. The brand itself no longer exists but many products and parts are still available. ITT Controls can help if you need anything.

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Rombach

ITT Controls also supplies products of Rombach. The products from Rombach are designed to increase customer satisfaction and to reduce the overall cost. The meters are uniquely constructed to give utilities just that little bit extra they need in a complex and competitive marketplace.

The unique modular design of the products of Rombach ensures that individual installation requirements can be met.

Products of Rombach distinguish themselves because they are all modular.

The advantages of
products from Rombach, products ITT Controls can offer, are their compact size, better overall aesthetics, fewer leak points, easy operation, flexible piping configurations, long life, maintenance-free operation and a cost effective temperature compensation.

Besides natural gas Rombach products also can be used for other materials. Please inform the sales department which product is the most suitable for your application.

ITT Controls delivers besides products from Rombach virtually all products and components for the petrochemical and process industries including manual valves, filters, pressure regulators, butterfly valves, pressure switches, combination controls, electronic flame detection and control, pilot burners and burners, further inflammation and regulation , thermoelectric safety, heating controllers comfort control, measuring and test equipment and many other products for the petrochemical and process industries.

If you want more information on products, parts and accessories of Rombach in the oil and gas industry please contact the sales department at info@ittcontrols.com

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Oventrop Valves

ITT Controls also supplies products and components of Oventrop. In the heating industry Oventrop is one of the leading brands in the field of valves and controllers. Oventrop existed since 1851 and now has a product range of over 4000 products. Products and parts of Oventrop are sold throughout the world. With offices in China, France, Great Britain, Hungary, Italy, Poland, Switzerland, Turkey and America they are represented worldwide.

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