AS-MB

Microbubble Air Separator

  • Used for efficient separation and elimination of entrapped air in hydronic heating systems
  • No minimum inlet/outlet piping length is required for proper operation
  • Durable brass body construction and corrosion-resistant media that withstands petroleum based cleaners, glycol anti-freeze, and temperatures up to 240 degrees F
  • Flanged, 3/4 in., 1 in., and 1¼ in. FPT sizes

Select options below to identify the UPC, Order Code, and Repair Kit for a specific AS-MB

Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA