Fisher™ Dirty Service Trim

Fisher Dirty Service Trim is designed for dirty, cavitating services. This trim utilizes a series of flow restrictions and expansions to eliminate cavitation, while allowing up to 19 mm (3/4 in) diameter particulate to pass through without plugging. Each of the trim stages has a successively larger flow area. The result is very efficient operation because typically 80 percent of the overall pressure drop is taken in the initial stages, where there is little danger of cavity formation which could result in cavitation.

Category:

Description

Features and Specifications

  • Designed to prevent cavitation.
  • Has a pressure drop limit of 290 bar (4200 psi).
  • Can pass up to 19 mm (3/4 in) diameter particulate.
  • The protected seat design separates the shutoff function from the throttling function to protect the seating surfaces from throttling wear.
  • Cage-type trim allows removal and inspection of parts without taking the valve body out of the pipeline.
  • Can be retrofitted into existing Fisher easy-e™, EH, or HP series valves.

Certifications
SIL capable, ATEX, CUTR, PED, CRN, NACE

Critical Service
Cavitation, Dirty Service

Flow Characteristics
Linear

Material
Carbon Steel, Stainless

Operating Temperature
Standard Temperature

Pressure Class
ASME

Process Connection Type
Flanged, Butt Weld, RTJ

Shutoff Class
Class V (FCI 70-2)

Valve Size
NPS 1, NPS 1-1/2, NPS 2, NPS 2-1/2, NPS 3, NPS 4, NPS 6, NPS 8, NPS 12, NPS 14, NPS 16, NPS 18, NPS 20, NPS 4×2, NPS 6×4, NPS 8×6, NPS 12×8, NPS 16×12, NPS 20×16, NPS 24×16, NPS 24×20

Valve Size Standard
NPS

Other Configurations
Contact your local Emerson business partner or sales office to learn about additional specifications or options for this product.

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