Description; Specifications - Fisher Design ED series Instruction Manual

Design ED & EAD Class 125-600
End Connection Styles
Cast Iron Valves
Flanged: Class 125 flat-face or 250 raised-face
flanges per ASME B16.1
Screwed: Consistent with ASME B16.4
Steel and Stainless Steel Valves
Flanged: Class 150, 300, and 600 raised-face or
ring-type joint flanges per ASME B16.5
Screwed or Socket Welding: All available ASME
B16.11 schedules that are consistent with Class
600 per ASME B16.34
Buttwelding: 1- through 8-inch
Schedules 40 or 80 consistent with ASME B16.25
Maximum Inlet Pressure
Cast Iron Valves
Flanged: Consistent with Class 125B or 250B
pressure-temperature ratings per ASME B16.1
Screwed: Consistent with Class 125 or 250
pressure-temperature ratings per ASME B16.4
Steel and Stainless Steel Valves
Flanged: Consistent with Class 150, 300, and 600
pressure-temperature ratings per ASME B16.34
Screwed or Welding: Consistent with Class 600
pressure-temperature ratings per ASME B16.34
1. The pressure/temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.
2. Some flanged Class 600 valve bodies in 316 stainless steel do not comply with ASME B16.34.
Only persons qualified through training or experience
should install, operate, and maintain a Design ED or
EAD valve. If you have any questions about these
instructions, contact your Fisher sales office before
proceeding.

Description

These single-port valves have cage guiding,
quick-change trim, and balanced push-down-to-close
valve plug action. Valve configurations are as follows:
Design ED—Globe-style valve (figure 1) with
metal-to-metal seating for all general applications over
a wide variety of pressure drops and temperatures.
Design EAD—Angle version of Design ED, used to
facilitate piping or in applications where a self-draining
valve is required.
2
Table 1. Specifications
(1)
Shutoff Classifications per ANSI/FCI 70-2
and IEC 60534-4
Standard: Class II
Optional: Class III—For valves with graphite piston
ring and 87 mm (3-7/16 inch) or larger port
diameter; Class IV—For valves with multiple
graphite piston rings and 111 mm (4-3/8 inch) or
larger port diameter
C-seal trim: High-temperature, Class V. See table 2
Flow Characteristics
Standard Cages: J Linear, J quick opening, or
J equal percentage
Whisper TrimR and WhisperFlot Cages: Linear
Flow Directions
Linear, Quick Opening, or Equal Percentage
Cage: Normally down
Whisper Trim and WhisperFlo Cages: Always up
Approximate Weights
1 & 1-1/4-inch valves: 14 kg (30 lb)
1-1/2 inch valves: 20 kg (45 lb)
2-inch valves: 30 kg (67 lb)
(2)
2-1/2 inch valves: 45 kg (100 lb)
3-inch valves: 57 kg (125 lb)
4-inch valves: 77 kg (170 lb)
6-inch valves: 159 kg (350 lb)
8-inch valves: 408 kg (900 lb)
C-seal trim is available for Design ED valves, Class
150, 300, and 600, in sizes 2-1/2, 3, 4, 6, and 8.
C-seal trim is available for Design EAD valves, Class
150, 300, and 600, in sizes 3, 4, and 6.
With C-seal trim, a balanced valve can achieve
high-temperature, Class V shutoff. Because the C-seal
plug seal is formed from metal (N07718 nickel alloy,
Inconel 718) rather than an elastomer, a valve
equipped with the C-seal trim can be applied in
processes with a fluid temperature of up to 593_C
(1100_F), provided other material limits are not
exceeded.

Specifications

Typical specifications for these valves are shown in
table 1.