Barnes & Jones 3856 1/2 NPT Vacuum Breaker

Product Description

The Barnes & Jones 3856 1/2 NPT Vacuum Breaker is a reliable and straightforward device used to automatically relieve or eliminate unwanted vacuum conditions in piping systems. This model, constructed from solid brass, is known for its long service life and easy installation.

• Machined brass body with stainless steel spring and valve
• Operates at up to 125 PSIG and 350 degrees Fahrenheit
• 1/2 inch NPT thread for compatibility with various setups

Product Highlights

Reliable operation for relieving or breaking unwanted vacuum conditions. The rugged hex design ensures durability, while the soft silicon O-ring guarantees bubble-tight sealing. Ideal for use in air/heat coils, heat exchangers, steam boilers, one-pipe steam systems, and more.

Product Information

Standard Information

• Brand: Barnes & Jones
• MPN: 3856

Technical Specifications

• Material: Machined brass body
• Spring and Valve Material: Stainless steel
• Seat Material: Silicon
• Operating Pressure: Up to 125 PSIG
• Max Temperature: 350 degrees Fahrenheit
• Vacuum Required to Open: Horizontal-0.77 inches of Mercury, Bottom outlet-0.75 inches, Top outlet-1.25 inches, No spring-0.3 inches
• Thread Size: 1/2 inch NPT
• Country of Origin: United States