Butterfly Valves

Butterfly Valves

AMOT, Chalwyn, and Roda Deaco offer a broad selection of butterfly air intake shutoff valves for use in diesel engine overspeed protection systems. The spring operated positive shutoff butterfly valves utilize both fail safe and energize to close actuators.   The actuators are available in electric, pneumatic, hydraulic, and manual operation.

4261D

4261D Air Intake Shut-off Valve (Electric, Pneumatic, Hydraulic & Manual Actuation)

Max. intake air temp:

Viton Seals

125°C

257°F

Valve bore size ranges: 56 - 188 mm 2.2 - 7.4 inches
Pneumatic cylinder:

Min. actuating pressure:
Max. working pressure:

207 kPa
1380 kPa

30 psi
200 psi

Electric solenoid operators:

12 VDC & 24 VDC
Max coil temp.

107W
175°C

 
350°F

  Rated for intermittent duty; 1 min on, 9 min off

See datasheet for complete specifications.

4262 SPEEDTRAP™ Air Intake Shutoff Valve

4262C Butterfly Valve (Electric, Pneumatic, Hydraulic, & Manual Actuation)

Max. intake air temp: Viton seals 125°C 257°F
Valve bore size: 4" and 6" Valve sizes 
Pneumatic cylinder:

Min. actuation pressure:
Max. working pressure:

207 kPa
1380 kPa

30 psi
200 psi

Electric solenoid operators
(intermittent duty):

12 and 24 VDC type

107 W

 

See datasheet for complete specifications.

4261M Air Intake Shutoff Valve

4261M Butterfly Valve (Electric, Pneumatic, Hydraulic & Manual Actuation)

Max. intake air temp: Nitrile seals (standard)   93°C    200°F
Valve bore size ranges: 61mm - 191 mm             2.4" - 7.5"
Pneumatic cylinder: Min. actuation pressure: 
Max. working pressure:  

30 psi
200 psi

Electric solenoid operators: 12VDC & 24VDC   96W

See datasheet for complete specifications.