Description
The Xylem-Bell & Gossett 02220400 Wessels Bladder NLA-400 is an internal bladder used in compatible expansion tank assemblies to manage water expansion within closed-loop heating systems. It separates water from the air charge inside the tank, allowing pressure changes to be absorbed as fluid volume increases or decreases during operation. This component is commonly used in hydronic applications where stable system pressure is required during heating cycles. Within HVAC systems it supports pressure balance in boiler and chilled water loops helping maintain consistent circulation conditions in expansion tank setups.
