Brass Vacuum Breaker (UKV-70DP) breaks the vacuum that forms by condensation when a steam line is shut off. When pressure drops, it lets air in to balance the pressure; when pressure rises, it closes. In principle it works like a check valve.
Contents
Technical Specifications
| Model | UKV-70DP |
|---|---|
| Size range | DN15 (1/2″) |
| Connection | Threaded |
| Max. allowable pressure (PMA) | 17 bar |
| Max. allowable temperature (TMA) | 260 °C |
| Weight | 420 g |
Materials
| Body | Brass MS58 |
|---|---|
| Cover | Brass MS58 |
| Seat | AISI 304 |
| Ball | AISI 440C |
How Does It Work?
While the line is under pressure, the ball is pressed onto its seat and the valve stays closed. When steam is shut off and condensation creates a vacuum, the ball lifts, air enters and the pressure is balanced.
Applications
- Coil systems
- Heat exchangers
- Ends of steam lines
- Steam headers
Key Features
- Breaks vacuum in the line and balances the pressure
- Designed for steam and condensate lines
- Small, compact body
- Stainless ball and seat
Selection and Installation
Install the vacuum breaker at the top of the equipment or line where vacuum may form. Install vertically with the system connection at the bottom.
Other body material: Stainless Steel Vacuum Breaker.
See the product catalogue (PDF) for dimensions, weights and capacity charts. Prices and online orders: Unox Online.
For steam trap types and selection, read our steam trap types guide; see all models on our steam traps page.
