Which provinces does Bahçeşehir Gaz serve?

According to the GAZBİR list, Bahçeşehir Gaz Dağıtım A.Ş. serves İstanbul. Going by the company name, the area is İstanbul / Başakşehir; confirm the boundaries with the company. Other distribution companies also operate in İstanbul, so check the district of the address.

Is the Bahçeşehir Gaz specification available in GazPlan?

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.

What pressure loss limits apply to Bahçeşehir Gaz projects?

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 long does Bahçeşehir Gaz project approval take?

We have no source for a company-specific time, so we do not quote a number of days.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.

Bahçeşehir Gaz natural gas project approval and drawing – İstanbul, Türkiye

In the İstanbul service area, indoor gas installation projects are reviewed by Bahçeşehir Gaz Dağıtım A.Ş. Below you will find the rules the app applies, the specification status and a checklist to go through before you apply. Going by the company name, its service area is İstanbul / Başakşehir; confirm the district boundaries with the company.

Rules: common values (not verified)

Specification and calculation rules

We could not find a public indoor installation specification for Bahçeşehir Gaz Dağıtım 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 İstanbul?

İstanbul: there are other companies here too: İgdaş İstanbul Gaz Dağıtım A.Ş. Pick the right company by the district of the address.

From project to gas opening in the Bahçeşehir Gaz area

The customer signs up with an authorised indoor installation firm in the Bahçeşehir Gaz area.
The firm surveys the site: service box, meter position, appliances, flue and ventilation.
A certified engineer draws the project; choosing İstanbul as the province in GazPlan brings up Bahçeşehir Gaz Dağıtım A.Ş. and its rules (district: Başakşehir).
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 Bahçeşehir Gaz 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.