Submitted by divya on May 28, 2025
350 Series

350 Series

A severe service control valve with larger internal cavities for noise and cavitation control.

  • 6 to 12 inch NPS (150 to 300mm DN)
  • Globe Body Style
  • RF |  RTJ  |  BWE Available End Connections
  • ASME B16.34 Class 150 to 600 Pressure Rating
  • ANSI/FCI 70.2 and IEC 60534-4 Class II to V Shutoff

More Details

350 Series control valves are heavy-duty globe style valves featuring expanded end connections and large internal cavities. Designed to keep valve outlet velocities within practical limits, these high-capacity valves are well suited for service applications where oversized piping is used to limit flow velocities.

These control valves are cage guided, single port valves that can be used for both throttling or on/off process control. Functioning especially well for noise reduction requirements, 350 Series valves offer superior performance.

Overview

 

350 Series

MODEL DESCRIPTION PLUG TYPE SIZES SHUTOFF CLASS
         
350 High Capacity
General Purpose		 Balanced
 Cage Guided		 6 to 12 Inch NPS 
(150 to 300 mm DN)		 IV / V / VI
         
351 High Capacity
High Temperature		 Balanced
Cage Guided		 6 to 12 Inch NPS
(150 to 300 mm DN)		 II / III / IV
  • Reduced Port, Anti-Cavitation, Low-Noise and Pilot Plug Trim Available
  • Metal Seating Standard
  • Live Loaded Packing Available
  • High Temperature Options Readily Available
  • NACE Options Available
  • Other Material Options Available

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Product Specifications

 

350 Available Configurations

AVAILABLE CONFIGURATIONS
BODY SIZE END CONNECTION
RF AND RTJ (FLANGE CONNECTION) BWE
ASME CLASS 150 / 300 / 600 ASME CLASS 150/300/600
GLOBE 8x6" NPS (200x150mm DN) ü ü
10x8" NPS (250x200mm DN)
12x6" NPS (300x150mm DN)
12x8" NPS (300x200mm DN)

AVAILABLE SHUTOFF CLASSIFICATION
VALVE TRIM SEAT OPTION SHUTOFF CLASS
ALL (EXCEPT ANTI-CAVITATION) METAL STANDARD CLASS IV
OPTIONAL CLASS V(1)
PTFE (SOFT SEAT) OPTIONAL CLASS V
ANTI-CAVITATION 1 STAGE METAL STANDARD CLASS IV
OPTIONAL CLASS V
ANTI-CAVITATION 2 STAGE METAL STANDARD CLASS V
NOTES: (1) Class V shut-off requires a spring-loaded seal ring, radius-seat plug, and wide-bevel seat ring. Not available with 8 inch port quick opening cages. Not available with S31600 plug and seat ring.
       
AVAILABLE SHUTOFF CLASSIFICATION FOR CLASS VI SHUTOFF
PORT SIZE VALVE SEAT MINIMUM SEAT LOAD
≥3.4375≤7 METAL 300 lbs./LINEAL INCH
≥3.4375≤7 PTFE CONSULT DYNA-FLO
NOTES: Class VI shutoff requires special materials. 

  • LCC
  • WCC
  • CF8M
  • WC9

CHARACTERISTIC PREFERRED FLOW DIRECTION
EQUAL PERCENTAGE (STANDARD) FLOW DOWN
QUICK OPENING FLOW DOWN
LINEAR FLOW DOWN
LOW-NOISE (LINEAR) FLOW UP
ANTI-CAVITATION 1-STAGE (LINEAR) FLOW DOWN
ANTI-CAVITATION 2-STAGE (LINEAR) FLOW DOWN

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351 Available Configurations

AVAILABLE CONFIGURATIONS
BODY SIZE END CONNECTION
RF AND RTJ (FLANGE CONNECTION) BWE
ASME CLASS 150 / 300 / 600 ASME CLASS 150/300/600
GLOBE 8x6" NPS (200x150mm DN) ü ü
10x8" NPS (250x200mm DN)
12x6" NPS (300x150mm DN)
12x8" NPS (300x200mm DN)

AVAILABLE SHUTOFF CLASSIFICATION
VALVE TRIM SEAT OPTION SHUTOFF CLASS
ALL METAL STANDARD CLASS II
OPTIONAL CLASS III
OPTIONAL CLASS IV(1)
NOTES: (1) Class IV shutoff requires multiple graphite piston rings.

  • LCC
  • WCC
  • CF8M
  • WC9

CHARACTERISTIC PREFERRED FLOW DIRECTION
EQUAL PERCENTAGE (STANDARD) FLOW DOWN
QUICK OPENING FLOW DOWN
LINEAR FLOW DOWN
LOW-NOISE (LINEAR) FLOW UP
ANTI-CAVITATION 1-STAGE (LINEAR) FLOW DOWN
ANTI-CAVITATION 2-STAGE (LINEAR) FLOW DOWN

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350 Series Control Valve Documentation

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

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