Indonesian Apartments: A Case of British Standard Cast Iron Flange Water Meters

Project Background: Water Supply Metering Challenges in Jakarta Apartments

This is a medium-sized apartment project in Indonesia. It has a total construction area of about 28,000 square meters. The building is 12 floors high with 68 residential units. Over 800 people are expected to live here.

It is a key public welfare residential project in the area. Its water supply system needs both stability and precise management. It must meet water flow needs during peak usage hours. It also needs accurate household water metering. This stops water waste and avoids billing disputes.

The project owner has two clear core requirement:

  • The water meters must comply with the BS EN 14154 British standard (a general specification for water meters in Europe), ensuring measurement accuracy in line with international standards and compatibility with the local building project acceptance system;
  • The smart water meters must be custom-colored RAL 3020 red. It matches the apartment’s warm exterior design. It also fits Indonesian tradition—red means vitality and safety.
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Requirement Decomposition: Precise Matching from Standard to Customization

We reviewed the project’s actual needs. We held three technical discussions with the client. Finally, we confirmed three key requirement areas.

Standard Compliance: Strict Adaptation to British Standards

The Indonesian construction industry enforces strict standard certifications for imported metering equipment. The project party requires that the water meters must comply with the BS EN 14154:2005 British standard (General Specification for Water Meters and Heat Meters in Europe), and also pass the local SNI certification (Indonesian National Standard).

This requirement not only means that the metering accuracy of the water meters must reach Class B level (error at minimum flow Q3 ≤ ±5%, error at dividing flow Q2 ≤ ±2%), but also that they must meet regional regulations in terms of material environmental friendliness and safety protection level.

Environmental Adaptability: Durable Design for Tropical Climates

Jakarta has a hot and humid climate. The client requires the water meter housing to be highly corrosion-resistant. It must pass a 1000-hour salt spray test without rusting.

Additionally, the internal mechanism of the meter should be made of high-temperature resistant materials to prevent deformation of components due to high temperatures and ensure measurement accuracy.

Customization Requirements: Dual Adaptation of Appearance and Functionality

Besides the custom red finish, the project side also has specific requirements for the water meters. Based on the pipeline layout, the meters need three flange connection sizes: DN50, DN65 and DN80. The meter body height must be within 180mm to fit the limited installation space in the pipe well.

At the same time, the water meters need to reserve an RS485 communication interface to facilitate the later connection to the apartment’s smart water management system, enabling remote meter reading and data monitoring.

These are Flanged Water Meters

Application Outcomes: Customer Recognition and Long-Term Value

Short-Term Outcomes: Precise Measurement and Convenient Operation and Maintenance

Since the water meters were officially put into use in May 2024, the project party has reported the following:

Measurement Accuracy: The monthly water bill calculation error has been consistently within ±1%, with a customer satisfaction rate of 98% regarding the billing results, and no billing disputes have occurred.

Operation and maintenance efficiency: The flange connection design has reduced the single water meter maintenance time from the conventional one hour to 20 minutes, and no water leakage accidents have occurred.

The appearance is well adapted: The red water meters are highly consistent with the architectural facade style, becoming a “highlight detail” in the project acceptance and receiving praise from the local housing and urban-rural development department.

Long-term Value: Laying a Foundation for Smart O&M

As of October 2025, the water meters have run stably for 17 months. The meter body coating shows no obvious wear, and the metering accuracy of the mechanism has not dropped.

In addition, data uploaded via the RS485 interface has helped the property management team achieve two key functions: peak water usage alerts and locating abnormal water leaks. For example, in March 2025, the system successfully found two small household pipe leaks.

As a result, the project has saved about 1,200 cubic meters of water in total. It has also cut the project’s operation and maintenance costs by 15%.

Customer Feedback and Extended Cooperation

In the 2025 annual cooperation assessment, the project party stated: “This water meter not only meets all our requirements for standards, appearance and performance, but also exceeds expectations in terms of adaptability to tropical environments and smart upgrades.”

Based on the trust established through this cooperation, the customer has signed water meter supply contracts for the next three apartment projects (with a total scale of over 300 units) with us and has recommended us to other local developers.

Summary and Outlook: Insights from Deeply Cultivating the Southeast Asian Market

The successful completion of the Indonesian apartment water meter project has confirmed the core value of “regional demand adaptation + customized product development”. In the future, we will further optimize our product solutions based on the characteristics of the Southeast Asian market:

Climate Adaptation: Develop materials and coating processes that are more resistant to high temperatures and humidity.

Standard alignment: Complete local certifications in various countries (such as SIRIM in Malaysia and TISI in Thailand) ahead of schedule to shorten the project cycle for customers.

Intelligence Upgrade: Integrated with NB-IoT wireless communication function, it meets the remote meter reading requirements in scenarios without network cabling.

We believe that by focusing on “precisely addressing customer pain points”, we will continue to provide more high-quality fluid metering solutions for construction projects in Southeast Asia and become a trusted partner for local customers.

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