01/06/2026
Two GOST Standards for Ball Valves ⚙️
Currently, there are two active state standards for ball valves:
* GOST 21345-2005
* GOST R 59553-2021
For convenience, we can refer to the first as the “old” standard and the second as the “new” one, and explain the difference in simple, clear terms 🙂
Let’s start with the key point: the new standard does not replace the old one; it complements it.
Previously, there was a single standard, GOST 21345-2005, which applied to all types of shut-off valves up to 250 bar (PN 250) and up to DN 500. In essence, it covered everything from household valves to industrial-grade solutions.
Now, a separate standard has been introduced: GOST R 59553-2021, specifically for household brass ball valves up to 40 bar (PN 40) and up to DN 100. These are the valves commonly used in homes, apartments, and plumbing systems. This standard was introduced to improve user convenience and safety 🛡️
This is logical, because a ball valve is a point where the interests of installers and everyday users intersect. Mistakes here are unacceptable, so the requirements have been strengthened 👍
The new standard consolidates key requirements from various standards and adds its own. As a result, it ensures stricter quality control and improved design requirements.
What does this mean in practice?
— Increased flow passage
— Thicker wall construction
— Reinforced body
— Overall more reliable design 💪
Separate testing procedures are defined 🧪:
strength testing, tightness/leakage testing 💧, climate resistance 🌡️, service life testing, coating quality, and resistance to external loads. In other words, it is not only about pressure testing, but also bending, tensile strength, and coating quality 🔍
An important point is mandatory certification.
Our products have successfully passed certification ✅ and are already being supplied to construction sites, retail stores, and DIY networks inside Russia—where reliability and safety are essential.
