Description
https://www.valsteam.com/zArchives/Products/229/Files/4-40-e-vb21-vb21m-vacuum-breaker-dn15.pdf
VB21 Vacuum Breakers
The VB21 Vacuum Breakers are reliable and efficient devices designed to automatically relieve or “break” unwanted vacuum conditions, effectively restoring atmospheric pressure. These vacuum breakers are ideal for use in steam-heated units of small to medium volume, including heat exchangers, heating coils, calorifiers, jacketed kettles, steam boilers, and more.
Key Features:
- Automatic Pressure Restoration: Ensures the safe operation of your system by preventing unwanted vacuum situations.
- Versatile Applications: Perfect for a variety of steam-heated applications, providing reliable performance in critical conditions.
Use:
- Suitable for saturated and superheated steam applications.
Available Models:
- VB21: Female threaded connection ISO 7 Rp or NPT..
- VB21M: Male threaded connection ISO 228 G.
Sizes:
- 1/2″ x 1/8″
Connections:
- System Connection: Vertical connection of 1/2″.
- Air Inlet Connection: Horizontal connection of 1/8″.
Installation:
- Designed for vertical installation with an angled connection. Please refer to the IMI – Installation and Maintenance Instructions for detailed guidance.
Limiting Conditions:
Pressure Ratings:
- 13 bar at 400 ºC
- 21 bar at 220 ºC
