Specifications | Butterfly Valves
STANDARD VALVES
MATERIALS OF CONSTRUCTION
(See also Bulletins 1122A [Manual], and 1154A [Resilient Seat Wafer]) 1126A Motorized
Component
Material
6061-T6 Aluminum, -H & -GS uses 304 SST
Body Shaft
303 Stainless Steel
Disc
SST 304
Standard butterfly valves have female pipe threads in ¾" through 6" pipe sizes. Motorized valves can be ordered with bracket, motor arm, and linkage for standard control motor or actuator. 1122A manual valves have a locking handle and are available in ¾" to 6" sizes. 1126A Valves have a swing-through disc. All standard valves can be used on natural gas. Standard 1122A j , and 1126A Valves are suitable for air heated to 200 °F.
Shaft Seal
FKM, -H uses graphite rings
INSTALLATION
— Use appropriate pipe thread sealant on piping end connections. — Do not over tighten body onto piping (see below diagram). — Can be mounted in any orientation, except horizontal with
motor underneath the valve body. — Allow for flow in either direction. — No regular maintenance required.
1126A-_-H can not be used on natural gas, use 1126A-_-GA instead.
j See Bulletin 1122A.
SPECIFICATIONS
When installing North American 1126A equipment please follow the diagram below.
Medium
Air, Natural Gas, Propane
Connection Sizes Rotation Angle
NPT threaded ISO 7-1 threaded (M versions)
0-90° Max Temperature 200 °F (93 °C) (Standard and -GS) 700 °F (371 °C) (H versions) Minimum Temp 5 °F (-15 °C) Max Pressure 25 psi (1.7 bar) (-0 to -4 sizes) 15 psi (1.0 bar) (-5 to -8 sizes)
YES
NO
AIR TEMPERATURE CORRECTION FACTORS FOR ALL VALVES Multiply scfh in table by air temperature factor to get scfh air at that temperature.
F
factor
F
factor
60
1.0
300 400 500 600 700
0.83 0.78 0.74 0.70 0.67
100 150 200 250
0.96 0.92 0.89 0.86
Bulletin 1126A Page 3
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