Watts AS-T - Manual

For Residential and Commercial Applications
ES-AS/AST
Job Name –––––––––––––––––––––––––––––––––––––––––––– Contractor ––––––––––––––––––––––––––––––––––––––––––––
Job Location –––––––––––––––––––––––––––––––––––––––––– Approval ––––––––––––––––––––––––––––––––––––––––––––––
Engineer ––––––––––––––––––––––––––––––––––––––––––––– Contractor’s P.O. No. –––––––––––––––––––––––––––––––––––
Approval ––––––––––––––––––––––––––––––––––––––––––––– Representative –––––––––––––––––––––––––––––––––––––––––
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
Series AS, AS-T
Heavy Duty Cast Iron Air Separators
Sizes: 1" – 3" (25 – 80mm)
Series AS Air Separator is designed for efficient separation of air
from water in Hydronic Heating Systems. Watts air separators
have heavy cast iron construction. They have tappings for the
installation of an expansion tank and air vent. Entrapped air in
the hot water heating system piping is dispersed by the internal
agitator of the air separator as the water is recirculated within the
heating system piping. This provides quiet efficient operation of
the hot water heating system radiation.
Features
• 1 /
2
" (15mm) tappings on each side for fill valve piping
• Heavy cast iron construction
• Furnished with tappings for expansion tank and air vent
• Provides complete, purging and venting of air in the system
when installed in conjunction with the Watts “FV4M1”
or Duo Vent float vents
• Efficient separation of air
Models
AS – Sizes
1", 1 1 /
4
" 1 1 /
2
", 2", 2 1 /
2
", 3" (25 –80mm),
NPT female inlet/outlet connections. With 1 /
8
" (3mm)
female threaded connection for float vent and 1 /
2
" (15mm)
female threaded connection for expansion tank.
AS-T – Sizes
1" and 1 1 /
4
" (25 and 32mm), with 1 /
2
" (15mm)
feed water tapping
Pressure - Temperature
Maximum Working Pressure: 80psi (5.5 bar) at 275ºF (135ºC)
AS
AS-T