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142P8*3 Series Vacuum/Pressure Switch

Brand: ITT Neo-Dyn

The Neo-Dyn Series 142P8 is a Ultra low pressure and vacuum to pressure crossover switch. 

Unique construction using efficient Nega-Rate Belleville disc spring for stable set points and high proof pressure. 

Wide range of wetted materials makes this series well suited for applications that formerly required the use of diaphragm seals.

Specifications

Brand

Adjustment Type

  • Concealed Wrench Flat Adjustment with Range Scale

Ambient Temperature Range

  • -40° to 82° C (-40° to 180° F)

Approvals & Certifications

  • CSA
  • UL

Approvals & Certifications

  • SIL Certification as Per IEC 61508

Conduit Connection

  • 1/2” NPT Female with Terminal Block

Deadband, Approximate

  • Inches WC: 0.75 to 1

Diaphragm Material

  • 316 Stainless Steel
  • Hastelloy C
  • Polyimide
  • Tantalum

Electrical Contacts

  • Gold

Electrical Rating

  • 0.5 A Resistive at 125 Vdc - DPDT
  • 0.5 A Resistive, 0.04 A Inductive at 125 Vdc - SPDT
  • 1 A Resistive, 0.5 A Inductive at 125 Vdc - Double Break
  • 1/2 hp at 250 Vac - Double Break
  • 1/4 hp at 125 Vac - Double Break
  • 1/4 hp at 250 Vac - SPDT
  • 1/8 hp at 125 Vac - SPDT
  • 11 A, 1/4 hp at 125/250 Vac - DPDT
  • 15 A at 125/250 Vac - SPDT, Double Break
  • 5 A Resistive, 3 A Inductive at 28 Vdc - DPDT

Enclosure Finish

  • Epoxy Paint

Environmental Protection

  • NEMA 13
  • NEMA 3
  • NEMA 3R
  • NEMA 3S
  • NEMA 4
  • NEMA 4X

Indication

  • Neon Light - 115 Vac

NPT Connection

  • 1/2” NPT Female

O-Ring Material

  • Buna-N
  • Ethylene Propylene (EPR)
  • Kalrez
  • Viton

Process Connection Material

  • 316 Stainless Steel
  • Hastelloy C

Process Temperature

  • -46° to 121° C (-50° to 250° F)

Proof Pressure

  • 30” WC Vacuum to 100 psig

Set Point - Decreasing

  • Inches WC: -40 to 40
  • kPa: -9.9 to 9.9
  • mbar: -99.6 to 99.6

Set Point - Increasing

  • Inches WC: -40 to 40
  • kPa: -9.9 to 9.9
  • mbar: -99.6 to 99.6

Switch Type

  • Double Break
  • DPDT
  • SPDT

System Pressure

  • 30” WC Vacuum to 15 psig
  • kPa: -7.4 to 103.4
  • mbar: -74.7 to 1034
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