When a steam system shuts down, the remaining steam condenses into water, which takes up a much smaller volume than the original steam. This creates a vacuum, which can damage equipment if not relieved of in a timely way. Vacuums prevent gravity draining systems from working properly, which can lead to frozen condensate and burst piping.
Vacuum Breakers are simple, reliable devices that provide a positive means to automatically relieve or “break” an unwanted vacuum condition.
Available Vacuum Breakers
Scroll the chart below for an overview of vacuum breakers Keystone commonly supplies.
Please contact us for questions, quotations and inquiries. We can also help you find vacuum breakers not listed here.
We Supply Vacuum Breakers From:
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Vacuum breakers are available in sizes from 1/8” up to 4” NPT.
⅜” & ¾” NPT is also available with field adjustable range from ¼” to 20” (8 – 508mm) Hg Vacuum for use on closed vessels and piping systems to control induced vacuum within safe limits.
- Protection of pressure vessels and piping collapse from vacuum conditions.
- Prevention of freezing due to excess condensate remaining in the system.
- Reduction of water hammer due to vacuum caused by control valve operation.