Product Overview

Selection Chart - Model AB - 0.50” to 2.00”
Optional features and accessories available for this
Macon product are an extra charge, and not included
in the standard model price.
www.maconbalancing.com
Tunstall Corporation
118 Exchange Street · Chicopee, MA 01013
Phone [phone] · Fax [phone]
Section: Components Bulletin-MB-AB-0915.06
AUTOMATIC
Model AB Automatic Balancing Valve
0.50” - 2.00”
Flow
GPM
2-32 PSID
Flow
GPM
2-32 PSID
AB1e- AB2e- AB3- AB4- AB3- AB4-
050
075
100
050
075
100
125
100
125
150
150
200
100
125
150
150
200
0.35 x x 16.00 x x
0.50 x x 17.00 x x
0.66 x x 18.00 x x
0.75 x x 19.00 x x
0.88 x x 20.00 x x
1.00 x x 21.00 x x
1.10 x x 22.00 x
1.30 x x 24.00 x
1.50 x x 26.00 x
1.75 x x 28.00 x
2.00 x x 30.00 x
2.20 x x 32.00 x
2.50 x x 34.00 x
2.65 x x 36.00 x
3.00 x x 38.00 x
3.50 x x 40.00 x
4.00 x x 42.00 x
4.50 x x 44.00 x
5.00 x x x 45.00 x
6.00 x x 48.00 x
7.00 x x 50.00 x
8.00 x x 52.00 x
9.00 x x 5 - 60 PSID
10.00 x x 54.00 x
11.00 x x 56.00 x
12.00 x x 58.00 x
13.00 x x 60.00 x
14.00 x x 62.00 x
15.00 x x 64.00 x
16.00* x x 66.00 x
* AB3 and AB4 Flow GPM continues at top of last two columns.
NOTE: Lower flows can be used w/adaptor in larger sizes.
68.00 x
70.00 x
STANDARD COMPONENTS
PT
Pressure/Temperature test port with brass body, dual durometer EPDM core, threaded brass cap with
O-ring seal and neoprene retainer strap. Accepts standard 1/8” (4mm) gauge adapter or thermometer
stem.
Rated to 500 PSI (3450 kPa) and 275°F (135°C)
MS
Memory stop with position indicator, zinc coated steel.
Please reference data sheet #Bulletin-MB-Accessories for optional accessories.