Jamesbury Series 451A Automated Brass Ball Valve

Brand: Valmet

JAMESBURY Series 451A ball valves are general-purpose full-port valves. 

The valves feature tight shut-off and are for use in hot and cold water, compressed air, and natural and bottled gas.

Series 451A are automated valves mounted with JAMESBURY VALV-POWR VPVL pneumatic actuators. 

Supply air mounting surfaces are NAMUR for ease of connection. 

The actuator is rated for psi: 60 (kPa: 4,100, bar: 4.1) up to psi: 116 (kPa: 8,000, bar: 8) and operating temperatures range from -20° to 79.4° C (-4° to 175° F). 

The valves are rated to psi: 400 (kPa: 2,760, bar: 27.6). Not for steam applications.

Specifications

Brand

Actuator Type

  • Double-Acting
  • Piston
  • Pneumatic
  • Spring Return

Approvals & Certifications

  • NAMUR VDI/VDE 3845

Ball Material

  • Chrome-Plated Brass

Cap Material

  • End: Aluminum

Enclosure Finish

  • End Cap: Polyester Coating
  • Spring: Epoxy Coated

Enclosure, Body Material

  • Actuator: Aluminum
  • Forged Brass

Materials of Construction

  • Fastener: Stainless Steel
  • Washer, Stem Thrust Washer: Carbon-Filled PTFE

Media

  • Cold Water
  • Compressed Air
  • Natural Gas

NPT Connection

  • 1/8” NPT

O-Ring Material

  • Stem: Viton

Port

  • Full

Pressure Rating

  • psi: 400 (kPa: 2,760, bar: 27.6)
  • psi: 60 to 116 (kPa: 413.7 to 800, bar: 4.1 to 8) - Actuator

Seat / Seal Material

  • Seat: Graphite Filled PTFE

Stem Material

  • 316 Stainless Steel

Temperature Range

  • -20° to 79.4° C (-4° to 175° F)
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