320 Series
previous
next

320 Series

320 AxFlo Trim is a high resistance, multi-stage, axial flow path trim to combat erosive service.

  • 2 to 8 inch NPS (50 to 200mm DN)
  • Globe Body Style
  • RF |  RTJ  |  NPT  |  BWE  |  SWE Available End Connections
  • ASME B16.34 Class 300 / 600 / 900 / 1500 Pressure Rating
  • ANSI/FCI 70.2 and IEC 60534-4 Class V Shutoff
More Details

320 AxFlo Anti-Cavitation trim is a heavy duty dirty service trim option designed for entrained particulate and high pressure drop applications. AxFlo trim offers multi-stage protection against cavitation and erosion.

You can expect enhanced trim life when using AxFlo trim because pressure gets distributed over the length of the valve plug across multiple STAGES. Each STAGE is not exposed to the full pressure differential, and on properly sized 320 valves, the amount of pressure drop per STAGE is controlled to prevent cavitation.

Overview

320 Series

Principles of Operation
Dyna-Flo 320 AxFlo trim is a high resistance, multi-stage, axial flow path trim, which means process fluid will flow through AxFlo valves parallel to the axis of the plug and cage.
This design is well suited to reduce clogged flow passages in applications involving fluids with entrained particles.

You can expect enhanced trim life when using AxFlo trim because pressure gets distributed over the length of the valve plug across multiple Stages, this means each
Stage is not exposed to the full pressure differential. On properly sized 320 valves, the amount of pressure drop per Stage is controlled to prevent cavitation
problems and to minimize erosion issues.

  • Metal Seating Standard

  • Live Loaded Packing Available

  • Other Material Options Available

Product Specifications

320 Available ConfigurationsOpen arrow
AVAILABLE CONFIGURATIONS
BODY ASME CLASS & TRIM TYPE SIZE END CONNECTION
RF AND RTJ (FLANGE CONNECTION) BWE SWE NPT
GLOBE ASME CLASS 300 & 600 AXFLO 3-STAGE 2" NPS (50mm DN) ü ü ü ü
3, 4, 6 & 8" NPS (80, 100, 150 & 200mm DN) ü ü ü û
ASME CLASS 900 & 1500 AXFLO 4-STAGE 2" NPS (50mm DN) ü ü û û
3, 4, 6 & 8" NPS (80, 100 & 150mm DN) ü ü û û
320 Available Shutoff ClassificationsOpen arrow
AVAILABLE SHUTOFF CLASSIFICATION
VALVE SIZE VALVE TRIM TYPE SHUTOFF CLASS
ALL ALL CLASS V
320 Standard Body MaterialsOpen arrow
  • LCC (A350-LF2 OPTIONAL BONNET MATERIAL)
  • WCC (A350-LF2 OPTIONAL BONNET MATERIAL)
  • CF8M (A182-F316 OPTIONAL BONNET MATERIAL)
320 Available Flow CharacteristicsOpen arrow
CHARACTERISTIC PREFERRED FLOW DIRECTION
LINEAR - ANTI-CAVITATION FLOW UP 


AxFlo trim is designed to have no significant flow for the first 15% of travel, this design feature is in place to maximize the life of the seat ring.

The multi-stage clearance flow design helps prevent high pressure drops in the seating area during throttling at low capacity. By preventing these high pressure drops, we can significantly extend the shutoff capability while simultaneously enhancing the throttling control at low travels.

320 Series Control Valve Documentation

320 Series Instructional Manual
Brochures, Dynaflo, DynaFlo, Sliding Stem Valves
320 Series Sales Bulletin
Brochures, Dynaflo, DynaFlo, Sliding Stem Valves


Refer to our FloSpec software for product selection, sizing and ordering

Refer to our FloSpec software for product selection, sizing and ordering

This site uses cookies to improve our service, you can find out more here - for the best web experience please accept cookies

x