Emerson DA7281440

Product Name: Emerson Fisher™ D / DA Series Control Valve Component (Internal Trim / Sub-assembly, P/N DA7281440)

Product Introduction: Emerson Fisher D and DA single-port, globe-style control valves are designed for high-pressure throttling or on/off service in oil & gas, refining, and chemical plants. DA7281440 is an OEM ordering/parts reference for a specific valve body trim set, seat ring, cage, or plug assembly for a Fisher D/DA valve.

Category: Emerson

Description

Technical Specifications (Typical for Fisher D/DA Valve Platform):

Body Material: Carbon Steel (ASTM A216 WCB) or Alloy Steel (options: stainless, Monel)
Pressure Class: ANSI 150 / 300 / 600 / 1500; also 3600 psi CWP / 6000 psi CWP
End Connections: Flanged (RF/RTJ), Screwed (NPT), Socket Weld
Trim Options: Equal % or Linear characteristic; available with tungsten carbide tip plug & ceramic (VTC) trim for erosive service
Seat Ring: Screwed-in type, fully enclosed gasket
Shutoff Class: Class IV or Class V per FCI 70-2
NACE Compliance: MR0175/ISO 15156 for sour service

Key Features:

Heavy-duty guiding keeps plug aligned under high ΔP
Threaded bonnet-body joint for easy inline maintenance
Suitable for dirty, sticky, or erosive fluids

Applications: Oil & gas production headers, refinery fractionation columns, high-pressure steam letdown, chemical reactor feed control.

Installation Notes: Verify trim sizing matches valve body size & Cv requirement; torque seat ring per Emerson torque chart; apply thread anti-seize only where specified; pressure-test after reassembly.

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