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
