D44, D4, D51, 18, 19 Directional Ball Valve

Brand: Worcester-Controls

Worcester’s Series D51 is a standardized line of flanged diverter ball valves in sizes 2", 3", 4", 6", and 8" with ANSI Class 150 flanges. 

D51 diverter valves are designed to accept media through a bottom inlet port and direct it out either of two outlet ports. 

They are commonly used for alternately diverting flow from a single source to two different lines; for example, dumping operations in which one outlet permits media to flow from a common source to the process while the other outlet alternately dumps or recirculates excess media. 

Flowserve Worcester Controls’ Series 18 and 19 multi-way valves are designed to improve the efficiency and productivity of your process systems with up to 5 ports, slip-on flanges, multiple seat and body materials, standard or full port, and optional pneumatic and electric automation and anti-fugitive emission design. 

Screwed, socket weld and butt weld ends are available as are slip-on flanges (ANSI Class 150 or 300).

Specifications

Actuator Type

  • Electric
  • Pneumatic

Ball Material

  • 316 Stainless Steel - ASTM A479

Bearing Material

  • Thrust & Seal Protector: PEEK
  • Thrust: Polyfill
  • Thrust: Reinforced RTFE

Direct Mount

  • Yes

Enclosure, Body Material

  • 316 Stainless Steel - ASTM A351 CF8M, 1.4408
  • Brass
  • Carbon Steel (ASTM 216 WCB)

Flange Material

  • Carbon Steel
  • Stainless Steel

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# ANSI
  • 1-1/2” (DN 40) - 300# ANSI

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150# ANSI
  • 1” (DN 25) - 300# ANSI

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150# ANSI
  • 2” (DN 50) - 300# ANSI

Flange Size - 3” (DN 80)

  • 3” (DN 80) - 150# ANSI
  • 3” (DN 80) - 300# ANSI

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ANSI
  • 4” (DN 100) - 300# ANSI

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ANSI
  • 6” (DN 150) - 300# ANSI

Flange Size - 8” (DN 200)

  • 8” (DN 200) - 150# ANSI

Flow Rate

  • 3 to 605 Cv

Handle Assembly Material

  • ANSI 300 Series Stainless Steel (Vinyl Coated)
  • Carbon Steel Zinc-Plated (Vinyl Coated)

Materials of Construction

  • Belleville Washers, Lock Washer, Centering Washer, Stop Plate: Zinc-Plated Carbon Steel
  • Belleville Washers: 301 Stainless Steel
  • Centering Washer: ANSI 316 Stainless Steel
  • Follower: ANSI 316L Stainless Steel
  • Lock Washer: ANSI 300 Series Stainless Steel
  • Wrench Block: Malleable Iron (ASTM A47) - Black Oxide Coated
  • Wrench Extension: Galvanized Steel / Carbon Steel (ASTM A53)

Nut & Bolt Material

  • Handle & Retaining Nut: ANSI 300 Series Stainless Steel
  • Handle & Retaining Nut: Zinc-Plated Carbon Steel

Operation

  • 180°
  • 90°

Plug Material

  • End: 316 Stainless Steel - ASTM A479
  • End: Carbon Steel (ASTM A108)

Port

  • Full
  • Standard

Screw Material

  • Shipping: ANSI 304 Stainless Steel
  • Stop: Black Oxide Coated Carbon Steel

Seat / Seal Material

  • Body Seal, Seat: Buna
  • Body Seal, Seat: Neoprene
  • Body Seal, Seat: TFE
  • Body Seal, Seat: UHMWPE
  • Body Seal: EPR
  • Body Seal: Viton
  • Stem Seal, Seat: Polyfill
  • Stem Seal: Reinforced RTFE

Stem Material

  • 316 Stainless Steel - ASTM A479

Valve Type

  • Automated

Welded Connection

  • 1” Butt Weld End
  • 1” Socket Weld End
  • 1/2” Butt Weld End
  • 1/2” Socket Weld End
  • 1-1/2” Butt Weld End
  • 1-1/2” Socket Weld End
  • 2” Butt Weld End
  • 2” Socket Weld End
  • 3/4” Butt Weld End
  • 3/4” Socket Weld End

  • Modulating Applications

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