Watts AS-MB 75 3/4" Air Separator, Brass, FNPT

The Watts AS-MB 75 is a 3/4" brass air separator. It features a brass body.

This 3/4" FPT microbubble air separator is designed for efficient separation and elimination of entrained air in hydronic heating systems. This air separator features a durable brass body, high capacity DuoVent air vent assembly, corrosion resistant coalescing media and 1/2" FPT bottom tapping for use with boiler fill fitting. The rugged corrosion-resistant polyphenylsulfone (PPSU) coalescing media withstands petroleum based cleaners, glycol anti-freeze and temperatures up to 240 degrees F in heating systems and methanol based anti-freeze solutions in ground-source heat pump loops. No minimum inlet/outlet piping length is required for proper operation and this air separator can be easily disassembled for inspection and cleaning.

Features

• Durable forged brass body construction
• Rugged, corrosion-resistant polyphenylsulfone coalescing media
• Includes high capacity DuoVent air vent assembly
• No minimum inlet/outlet piping length is required for proper operation

Common Questions

What is it designed for?

It is intended for hydronic heating service.

Specifications

• Size: 3/4"
• Inlet Size: 3/4"
• Outlet Size: 3/4"
• Connection: FNPT
• Connection Gender: Female
• Body Material: Brass
• Application: Hydronic Heating
• Pack Quantity: 6
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: AS-MB 75
• Lead-Free: No
• Component Role: Air Separator