Armstrong International A5628 1/2″ NPT Vacuum Breaker for F&T Steam Traps

Description

Overview

The Armstrong International A5628 is a 1/2″ NPT vacuum breaker engineered as a direct-fit accessory for Armstrong’s A6, A8, B6, B8, J, JD, K, KD, L, LS, M, and MS Series Float & Thermostatic (F&T) steam traps. Vacuum breakers are a critical component in steam distribution and condensate return systems, preventing the formation of negative pressure (vacuum) that can draw condensate back into the steam lines, cause water hammer, or lead to premature trap failure.

Key Features

• 1/2″ NPT connection for straightforward installation and compatibility with standard pipe fittings
• Designed specifically for Armstrong A6, A8, B6, B8, J, JD, K, KD, L, LS, M, and MS Series Float & Thermostatic steam traps
• Prevents vacuum formation in steam and condensate systems, protecting equipment and piping integrity
• Eliminates backflow of condensate into steam supply lines
• Helps reduce the risk of water hammer and associated system damage
• Durable construction suited for the demanding conditions of commercial and industrial steam systems
• Direct OEM replacement accessory from Armstrong International — a trusted leader in steam system solutions

Compatible Armstrong F&T Trap Series

• A6 Series
• A8 Series
• B6 Series
• B8 Series
• J Series
• JD Series
• K Series
• KD Series
• L Series
• LS Series
• M Series
• MS Series

Application

Vacuum breakers are essential in steam heating systems where condensate return lines may experience sub-atmospheric pressure conditions. When installed on Armstrong F&T traps, the A5628 vacuum breaker allows air to enter the system at the trap body whenever pressure drops below atmospheric, breaking any vacuum and ensuring proper condensate drainage. This protects the trap internals, extends service life, and maintains overall system efficiency.

Specifications

• SKU: A5628
• Brand: Armstrong International
• Connection Size: 1/2″ NPT
• Type: Vacuum Breaker
• Compatible Equipment: Armstrong A6, A8, B6, B8, J, JD, K, KD, L, LS, M, and MS Series Float & Thermostatic Steam Traps