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RPZ Valve Testing: What To Expect With Titan Mechanical Services

Updated: Oct 13, 2023

Safety is a critical aspect of any water system, especially when it comes to protecting potable water from potential contamination. One crucial component in achieving this is the Reduced Pressure Zone (RPZ) valve. To shed light on the significance of RPZ valve testing, this detailed blog post explores the methodology employed by Titan Mechanical Services. As nationwide experts in this field, we'll delve into the importance of regular testing, the testing process itself, and the benefits of entrusting this vital task to our WIAPS approved testers.


The Importance Of RPZ Valve Testing


Reduced pressure zone valves need tested by an approved tester at least once every 12 months, with being a legal requirement within the UK. RPZ valves play a vital role in preventing the backflow of contaminated water into the public water supply. These valves are designed to safeguard against potential cross-connections between potable water and non-potable sources, such as irrigation systems or fire sprinklers. However, over time, RPZ valves can experience wear and tear, rendering them less effective. Regular testing ensures their functionality and compliance with water safety regulations.


RPZ Valve after test


Our RPZ Valve Testing Process


  1. Inspection and Preparation: To initiate the RPZ valve testing process, our skilled technicians conduct a thorough visual inspection of the valve. They assess its condition, ensuring there are no signs of damage or deterioration. Additionally, they verify that the valve is properly installed and in compliance with local plumbing codes. Adequate preparation is crucial to guarantee accurate testing results.

  2. Water Supply Shutdown: Before proceeding with RPZ valve testing, it is essential to shut down the water supply to the valve being tested. This ensures a controlled environment during the testing process and prevents any potential disruption to the surrounding plumbing system.

  3. Pressure Differential Measurement: To evaluate the RPZ valve's performance, our technicians measure the pressure differentials across the various zones of the valve. This involves comparing the pressure readings before and after the valve, as well as monitoring the pressure within the intermediate zone. These measurements help determine if the valve is effectively preventing backflow.

  4. Check Valve Operation: During the testing process, our technicians carefully examine the check valves within the RPZ assembly. They ensure that these valves are functioning correctly by assessing their opening and closing mechanisms. Any malfunctioning check valves can compromise the effectiveness of the entire RPZ valve system.

  5. Relief Valve Examination: RPZ valves are equipped with relief valves to handle excessive pressure buildup within the assembly. Our technicians meticulously inspect these relief valves, ensuring they are properly installed, calibrated, and capable of releasing pressure when necessary. A faulty relief valve can compromise the safety of the plumbing system.

  6. Test Report and Compliance Documentation: Upon completion of the RPZ valve testing, our team will generate a detailed test report that outlines the results of the inspection and measurements. This report serves as a comprehensive record of the valve's performance and compliance with water safety regulations. It also includes recommendations for any necessary repairs or maintenance to ensure the continued effectiveness of the RPZ valve system.


RPZ Valve Test

RPZ Testing With Titan - What To Expect


  1. Expertise and Experience: Titan have been operating for over 10 years and we utilise over 50 years of water management experience. Our team comprises highly skilled technicians with extensive experience in RPZ valve testing. We possess in-depth knowledge of the regulatory requirements and best practices, ensuring accurate and reliable testing results.

  2. Compliance Assurance: By choosing Titan Mechanical Services, you can rest assured that your RPZ valves will be thoroughly tested and compliant with local plumbing codes and regulations. Our meticulous approach guarantees the safety of your potable water supply.

  3. Preventative Maintenance: Regular RPZ valve testing allows for the early detection of any issues or potential malfunctions. By addressing these concerns promptly, we help prevent costly repairs and ensure the continuous protection of your water supply. If your RPZ is determined beyond a repair, we can also provide a leading solution with our RPZ valve replacement service.

  4. Responsiveness and Availability: If you have an upcoming deadline for your RPZ valve tests and need urgent assistance, then you can rely on us. We operate with 5 nationwide project hubs spread throughout the UK and track all areas of our responsiveness. From enquiry responses within an hour to surveys carried out within 7 days, we set strict KPI's to ensure we excel in our timing.



Get Started With Titan Today!


Regular RPZ valve testing is a crucial step in safeguarding potable water from potential contamination. Titan Mechanical Services takes pride in its expertise in RPZ testing, ensuring the functionality and compliance of these essential components. By entrusting us with this vital task, you can be confident in the safety and integrity of your water supply. Don't compromise on water safety - choose Titan Mechanical Services for reliable RPZ valve testing.







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