Emerson Fisher ED Instruction Manual page 6

ED, ES, ET, EW, EZ, HP Valves

November 2017

applications by utilizing stainless steel materials, specialized seals, and extension bonnets that locate the sensitive

packing parts away from the sub-zero temperatures. These valves provide up to Class V shutoff, however for tighter

shutoff applications, shutoff can be improved to Class VI in small to medium sizes.

Fisher EZ single-port control valves have unbalanced valve plugs and post guided trim for viscous or other

hard-to-handle applications with process temperatures up to 593°C (1100°F). They are available in sizes ranging from

NPS ½ to 4 and pressure ratings up to CL600.

These valves utilize a clamped trim design, meaning that the seat ring and seat ring retainer are clamped into the body

using compression from the valve bonnet. These valves provide up to Class V shutoff, for tighter shutoff applications,

shutoff can be improved to Class VI.

Fisher EW single-port control valves have either balanced or unbalanced plugs, cage guided trim and feature large

internal cavities with expanded end connections for all general applications with process temperatures up to 593°C

(1100°F). The expanded end connections allow for installation into oversized piping without the need for piping

reducers. They are available in sizes ranging from NPS 4x2 to 24x20, where size designations are "End Connection

Size" x "Nominal Trim Size". All sizes are available in pressure ratings up to CL600, with the NPS 8x6 and 12x8 sizes also

available in CL900 ratings. Several different globe body, sliding-stem configurations are available including EWD and

EWT:

D EWD‐‐Balanced Push-Down-To-Close valve for applications with process temperatures up to 593°C (1100°F)

D EWT‐‐Balanced Push-Down-To-Close valve for applications with process temperatures up to 316°C (600°F)

In small to medium sizes these valves utilize a clamped trim design, meaning that the cage and seat ring are clamped

into the body using compression from the valve bonnet. In large sizes the trim is hung in the valve body and the seat

ring bolted into the valve body (EWD constructions) or screwed into the cage (EWT constructions). EWD constructions

provide up to Class IV shutoff, however for tighter shutoff applications, shutoff can be improved to Class V with the use

of the optional C-seal or Bore seal. EWT constructions provide up to Class V shutoff, however for even tighter shutoff

applications, shutoff can be improved to Class VI in small to medium sizes.

Fisher HP single-port control valves have either balanced or unbalanced plugs, cage guided trim, and

Push-Down-To-Close action for all high pressure applications with process temperatures up to 566°C (1050°F). They

are available in sizes ranging from NPS 1 to 8 and pressure ratings up to CL2500 in several different body

configurations including HPD, HPAD, HPS, HPAS, HPT, and HPAT:

HPD

D 

‐‐Balanced, globe body sliding-stem valve for applications with process temperatures up to 566°C (1050°F)

D HPAD‐‐Balanced, angle body sliding-stem valve for applications with process temperatures up to 566°C (1050°F)

D HPS‐‐Unbalanced, globe body sliding-stem valve for applications with process temperatures up to 566°C (1050°F)

D HPAS‐‐Unbalanced, angle body sliding-stem valve for applications with process temperatures up to 566°C (1050°F)

D HPT‐‐Balanced, globe body sliding-stem valve for applications with process temperatures up to 316°C (600°F)

D HPAT‐‐Balanced, angle body sliding-stem valve for applications with process temperatures up to 316°C (600°F)

These valves utilize a clamped trim design, meaning that the seat ring and cage are clamped into the body using

compression from the valve bonnet. Up to Class V shutoff is available with these valves.

6

Instruction Manual Supplement

D103401X012