Watts ASM1-T 1 Expansion Tank, Cast Iron, FNPT

The Watts ASM1-T 1 is a 1" cast iron expansion tank. It features a cast iron body. Rated to 125 psi.

This 1" air separator is used in commercial and residential, hydronic heating applications to separate air from water in the piping system. It consists of a heavy, cast iron body construction with a 1/2" female threaded connection for an expansion tank, and a 1/8" female threaded connection for a float vent. It provides continuous purging and venting of air in the system when installed with Watts Model ET expansion tank and Model FV4 float-vent. Maximum pressure is 125 psi (8.6 bar).

Features

• Tappings on each side
• Heavy cast iron construction
• Provides complete, continuous purging and venting of air
• Efficient separation of air

Common Questions

What is it designed for?

It is intended for hydronic heating service.

Specifications

• Size: 1"
• Inlet Size: 1"
• Outlet Size: 1"
• Connection: FNPT
• Connection Gender: Female
• Body Material: Cast Iron
• Max Pressure (psi): 125
• Application: Hydronic Heating
• Pack Quantity: 6
• Country of Origin: United States
• Warranty: 1 Year Limited
• MPN: ASM1-T 1
• Lead-Free: No
• Component Role: Expansion Tank