Where does İzmirgaz distribute natural gas?

According to the GAZBİR list, İzmir Doğalgaz Dağıtım Ticaret ve Taahhüt A.Ş. serves İzmir.

Does GazPlan calculate with İzmirgaz rules?

Not yet: the specification has not been read. For this company the app uses the common profile, based on TS 7363 general rules, and warns that the rules have not been verified. The rules will be updated when the specification is uploaded.

Which limits are used to size pipes in the İzmirgaz area?

The common profile in GazPlan allows 1 mbar loss from the service box to the meter and 0.8 mbar from the meter to the appliance, with a velocity limit of 6 m/s at low pressure. These values have not been verified for this company; the company's current specification is what counts for a project.

How many days does project approval take in the İzmirgaz area?

We have no source for a company-specific time, so we do not quote a number of days. It depends on how many applications are in the queue, whether the project is complete the first time and how many corrections are needed. For current information, ask the company or your authorised installation firm.

İzmirgaz natural gas project approval and drawing – İzmir, Türkiye

In the İzmir service area, indoor gas installation projects are reviewed by İzmir Doğalgaz Dağıtım Ticaret ve Taahhüt A.Ş. Below you will find the rules the app applies, the specification status and a checklist to go through before you apply.

Rules: common values (not verified)

Specification and calculation rules

We could not find a public indoor installation specification for İzmir Doğalgaz Dağıtım Ticaret ve Taahhüt A.Ş., so the specification has not been read. For this company GazPlan uses a common profile, based on TS 7363 general rules: the limits are the values that the İGDAŞ 2017, Samgaz 2019 and Kırgaz specifications share. This page and the rules in the app will be updated when the specification is uploaded.

Values used in the calculation

Service box → meter loss limit	1 mbar
Meter → appliance loss limit	0.8 mbar
Velocity limit (low pressure)	6 m/s
Friction loss, steel	formula at all flows (23.2·R·Q^1.82/D^4.82, R = 0.6)
Efficiency in appliance flow	90% at 70 kW and above
Isometric angle	30°

Profile source: values common to the İGDAŞ 2017, Samgaz 2019 and Kırgaz specifications (limits 1.0 / 0.8 / 1.8 mbar, velocity 6 m/s, ζ table); TS 7363. The value in the company's current specification is what counts for a project.

Are there other distribution companies in İzmir?

İzmir: no other distribution company operates here (GAZBİR list).

From project to gas opening in the İzmirgaz area

The customer signs up with an authorised indoor installation firm in the İzmirgaz area.
The firm surveys the site: service box, meter position, appliances, flue and ventilation.
A certified engineer draws the project; choosing İzmir as the province in GazPlan brings up İzmir Doğalgaz Dağıtım Ticaret ve Taahhüt A.Ş. and its rules.
The project is submitted through the channel and in the format the company accepts; return notes are corrected and the project is resubmitted.
After approval come installation, the leak-tightness test, the gas opening appointment and handover.

Ask the company, or the authorised firm you work with, about the application channel and the current document list. This page does not give processing times or application addresses; company-specific details are added only when they can be verified.

Related guides and calculators

If you have the current version of the İzmirgaz specification, please send it to [email protected]; we will review it and, where it fits, update the rules in the app. Open the app

Company and province data: GAZBİR distribution company list. For information only; the distribution company's current specification and procedure apply to projects.