Brochure

Submittal Data Information
Air Scoop
®
Submittal Data # 101-007
Supersedes: 03/01/07
Effective: 07/23/07
Taco Inc., 1160 Cranston Street, Cranston, RI 02920 / [phone] / Fax [phone]
Taco (Canada) Ltd., 6180 Ordan Drive, Mississauga, Ontario L5T 2B3 / [phone] / Fax [phone]
www.taco-hvac.com
Purpose
The Taco Air Scoop
®
is specifically designed
to provide a noiseless, air-free hydronic
heating, cooling or combination system, by
efficiently separating out the air from the
water in any of these systems.
Operation
Air being lighter than water, it travels along
the upper portion of a horizontal pipe in
low velocity hydronic systems. As the air
and water enter the Air Scoop their
velocity decreases, permitting the air
bubbles to be scooped up by the baffle
and directed to the top of the chamber.
The air reaching the top of the air scoop
is either immediately vented through a
Hy-Vent
®
or it moves into a conventional
plain steel expansion tank (models 433,
434, 435, 436, and 437), if used. Should the
air completely fill the plain steel tank and
back down into the Air Scoop, the excess
will be removed by the Hy-Vent without
disturbing the operation of the system.
Size and Connections
Taco Air Scoops are available in 1” through
3” cast iron threaded and 4” flanged cast
iron. Each Air Scoop has an 1/8” vent
connection on top for the installation of a
Taco 400-3 or 416-1 Hy-Vent, and a 1/2”
bottom tapping for a diaphragm expansion
tank. The 1 1/2” through 4” Air Scoops
also have an additional top tapping for the
connection of a plain steel expansion tank.
Features
• One Piece Cast Iron Construction
• Engineered Baffle to Separate Air
from Water
• Never Requires any Servicing
Ratings
Maximum Operating Pressure:
125 PSI (862kPa)
Maximum Operating Temperature:
300ºF (135ºC)
Media: Water or Water / Glycol
Recommended Flow Rate: 4 ft. / sec.
Maximum Flow Rate: 8 ft. / sec.
A
B
C
F
E
A
B
C
F
D
E
Taco
Air Scoop®
Taco
Flo-Chek
Taco
Circulator
Diaphragm Type
Expansion Tank
Water
Boiler
18” Minimum
Straight Run
431, 432
433, 434, 435, 436, 437
Product Weight
Number Size A B C D E F Cv Lbs. Kg
431 1” 6” 4” 2 1/2” ** 1/2” NPT 1/8” NPT 31.4 4 1.8
432 1 1/4” 6” 4” 2 1/2” ** 1/2” NPT 1/8” NPT 53.5 4 1.8
433 1 1/2” 8” 6” 4” 3/4” NPT 1/2” NPT 1/8” NPT 61 7 3.2
434 2” 8” 6” 4” 3/4” NPT 1/2” NPT 1/8” NPT 106.6 7 3.2
435 2 1/2” 10” 8” 5 1/2” 1” NPT 1/2” NPT 1/8” NPT 140 15 6.8
436 3” 10” 8” 5 1/2” 1 1/4” NPT 1/2” NPT 1/8” NPT 276 14 6.4
437* 4” 16 5/16” 11 5/8” 7 1/8” 1 1/2” NPT 1/2” NPT 1/8” NPT 600 52 23.6
Dimensions & Weights
*This size has 125 lb. flanged ends
**No conventional plain steel expansion tank tapping
Use at 40%, Centered (In place of “Do it Once. Do it right” on Catalog Sheets) NOTE: Remove Hydronic Components & Systems