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What is ASME A112.18.6-2017 CSA B125.6-17?


In the world of plumbing, standards play a crucial role in ensuring the safety and reliability of various products and systems. ASME A112.18.6-2017 CSA B125.6-17 is one such standard that focuses on a specific aspect of plumbing fixtures. This article aims to provide a thorough understanding of what ASME A112.18.6-2017 CSA B125.6-17 entails and its implications in the industry.

Overview of ASME A112.18.6-2017 CSA B125.6-17

ASME A112.18.6-2017 CSA B125.6-17 is a joint standard developed by the American Society of Mechanical Engineers (ASME) and the Canadian Standards Association (CSA). It primarily deals with the performance requirements, testing methods, and marking provisions for pressure balancing valves and combination pressure balance/temperature regulating valves. These types of valves are commonly used in plumbing systems to control water temperature and maintain a balanced water pressure.

The standard sets forth stringent guidelines that manufacturers must comply with when designing, manufacturing, and testing pressure balancing valves. These guidelines ensure that the valves meet specific performance requirements intended to prevent scalding incidents and maintain consistent water flow despite fluctuations in the building's water supply.

Key Features and Requirements

Temperature Regulation: One of the key features addressed in ASME A112.18.6-2017 CSA B125.6-17 is temperature regulation. The standard mandates that pressure balancing valves or combination valves must provide a reliable means of controlling water temperature to prevent scalding injuries. They must maintain a preset balance within a specified range, even when the pressure varies on either the hot or cold water supply.

Flow Rate and Pressure: The standard also specifies the maximum allowable flow rate and pressure for these valves. This ensures that they can handle different water volumes and pressures commonly encountered in residential or commercial settings. The combination valves covered by the standard must exhibit equivalent temperature control performance as their separate pressure balancing valve and thermostatic mixing valve counterparts.

Marking and Certification: ASME A112.18.6-2017 CSA B125.6-17 requires manufacturers to mark certified valves with specific information, including the manufacturer's name, valve model, and any certifications obtained. These markings allow consumers and inspectors to easily identify compliant products and ensure their proper installation.


ASME A112.18.6-2017 CSA B125.6-17 is an important standard that ensures the safety and functionality of pressure balancing valves and combination valves used in plumbing systems. Compliance with this standard guarantees that valves meet stringent requirements related to temperature regulation, flow rate, and pressure. By adhering to these guidelines, manufacturers contribute to the overall safety and wellbeing of individuals using plumbing fixtures equipped with these valves.

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