Vacuum breakers provide a simple, dependable way to relieve an unwanted vacuum in a closed vessel or pipeline.
Vacuums are often caused by cooling fluids and can cause equipment implosion or contamination from back siphonage. Kadant Johnson’s simple and reliable design provides instant response to vacuums and a large air venting capacity. They are easy to install and are rigorously tested for a long service life. Sizes are available from 3/8" to 1-1/2".
Simple spring, ball, and O-ring design
Stainless steel ball, spring, and retainer tube construction
Low sealing spring pressure
Rated to 300 psig, 365°F
100% factory bubble testing
Design endurance tested to 1M cycles
NPT threading available
Instantaneous opening to vacuum conditions
Large air venting capacity
Low differential pressure sealing
Quiet, chatter free performance
Long and dependable life
Operating pressures are possible beyond 300 psig depending upon size, seal materials, and temperatures. We offer product and system knowledge to choose the right vacuum breaker across multiple applications.
From products and services to training and support, we can design, manufacture, install, and maintain your fluid handling systems. Partnering with us ensures your operations are fully integrated for maximum performance.