708BS

Company Name : Low Flow

Specification

Sizes:

  • 1/4″, 1/2″, 3/4″ (DN8, DN15, DN20)

End Connections

  • Threaded – NPT, BSPT, BSPP
  • Socket weld – 1/2″ & 3/4″ only (DN15 & DN20)
  • Integral tube ends (max Cv of 0.2)
  • Flanged

Actuator (Positioner required with all actuators)

  • 1/4″ & 1/2″ (DNS & 15) – standard : 14M (14in2) multi-spring ; optional: 35M (35in2) multi-spring
  • 3/4″ (DN20) – standard: 14M; optional 35M

Body/Bonnet Materials

  • Carbon Steel
  • Stainless Steel
  • Hastelloy C
  • Hastelloy B
  • Alloy 20
  • Monel
  • Titanium

Trim Material

  • Standard trim – Cv’s 0.05 (0,04 Kv’s) & above: 17-4 plug, 316SS stem and seat ; Cv’s below 0.05 (0,04 Kv’s): Nitronic 60 stem, plug and stem
  • Optional trim -17-4 plug, 416SS seat; Stellite plug and seat; 316SS stem, plug and seat

Bellows Material

  • Standard – 316L, Triple-ply
  • Optional – Hastelloy C

Actuator Material: Aluminum

Diaphragm Material

  • 14M Actuator : Nylon/Nitrile
  • Optional 35M Actuator: Buna-N fabric reinforced

Stem Packing Material

  • Standard – spring-loaded TFE/Chevron
  • Optional – braided or Graphite/Grafoil with positioner

Gasket Material: matched to packing material

Service: Steam, air, gas, chemicals , oil, water

Shutoff

  • Standard – Cv’s 0.05 and greater: ANSI Class IV; Cv’s 0.02 and lower: ANSI Class VI
  • Optional – Cv’s 0.05 and greater: ANSI Class VI (with PEEK seats)

Ranges: 3-15 (0,2-1,0); 6-30 (0,4-2,1); 3-9 (0,2-0,6) psi (bar)
positioner required on al/ ranges
Mark 15 TMP standard. Consult factory far smp configuration

Valve Action

  • Direct (ATC)
  • Reverse (ATO)

Flow Characteristics: linear (all Cv’s) , equal percentage (Cv > 0.05/0,43 Kv only): or quick opening (Cv > 0.05/0,43 Kv only)

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