The 1177E-EP2 Control Valve is an electro-pneumatically controlled 
direct acting butterfl y valve capable of handling fl uids up to 
800°F. For control input the valve uses a 4-20mA signal, and also 
features a feedback unit with 4-20mA output .

All 1177E-XX-EP2 Valves must be installed with the shaft  
in a horizontal orientation.

 Maximum ambient temperature 

must not exceed 176°F. See sheet “Supply Air Requirements 
1177D-EP2/1008-EP2” for air quality information. Each valve is 
supplied with a 

¼  

" miniature .01 micron automatic pulse drain 

coalescing fi lter to be installed in the compressed air supply line. 
Required supply air pressure is 70-90 psig. 

INSTALLATION

 

Valve Body Material: Heat Resistant Cast Iron

 

Valve Disc Material: 316 SS

 

Valve Shaft  Material: 316 SS

 

Disc Clamp Material: 316 SS

 

Disc Clamp Hardware: 304 SS

 

Compressed Air Supply Pressure: 70-90 psig 

 

Maximum Operating Pressure: 2 psig

 

Wafer Style Design

 

 

 

 

-6 thru -14 ANSI class 150 fl ange

 

 

 

— 

-16 RPM fl ange

 

Maximum Fluid Temperature: 800°F

 

Maximum Ambient Temperature: 176°F

 

Minimum Ambient Temperature: -4°F

 

Actuator Cycle Rating (closed to open to closed):  

 

 1,000,000

 

Max Travel Time (open-close-open): 2 seconds

 

Position Indication: Visual Indication on positioner

 

Input 4-20mA

 

4-20mA Position Transmitter

 

 

  

— 

10-30 VDC (24 VDC recommended)

    

 

— 

LCD display with keypad

 

HART protocol

 

Nema 4X (IP65)

—  EP4 = explosion proof, Class I, Div. II, Group A, B, C, D, 
 

Class II,  Div. II, Group E, F, G

SPECIFICATIONS

Bulletin 1177E-EP2

Page 2

 

CAPACITY INFORMATION

Flow is rated in SCFH, 70% open with a 1”w.c. drop at 70°F. and 14.7 PSIA. Leak rate is rated in SCFH 

with 1 PSI backpressure.

 

Valve  

 

 

  Designation 

Size (inches) 

Cv @ 70% 

Flow @ 70% 

Leak Rate

 

1177E-6-EP2

 3  225 9,650 

330

 

1177E-7-EP2

 4  333 

14,300 

360

 

1177E-8-EP2

 6  814 

35,000 

780

 

1177E-9-EP2

 8  1,303 

56,000 

1350

 

1177E-10-EP2

 10  2,059 

88,500 2230

 

1177E-12-EP2

 12  3,188 

137,000 

3200

 

1177E-14-EP2

 14  4,538 

195,000 

3700

 

1177E-16-EP2

 16  5,910 

254,000 

4200

Table 1

Change in fl ow and pressure drop across the valve is negligible when changing from 70% open to wide open unless inlet 
pressure is increased substantially to maintain the 1"w.c. pressure drop, which is why the sizing table shows capacities at 70% 
open.

Product Overview | 1177E-EP2 Control Valve

Catalog Combustion 2021 - Page 1348

Fives Group
FIVES GROUP
FIVES GROUP-FIVES GROUP-1348-1334

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