Noshok
2020/2120 Series 2-Valve Liquid Level Manifold Valves

Key Features

  • Designed for use with differential pressure transmitters in liquid 
    level applications
  • Available in either single flange or double flange connection for 
    direct installation
  • 100% helium leak tested to 1 x 10-4 ml/s for guaranteed 
    performance and reliability
  • 2020 Series hard seat valves have 10,000 psi pressure rating @ 200 °F
  • 2120 Series soft seat valves have 6,000 psi pressure rating @ 200 °F
  • 2120 Series valves also feature a replaceable Delrin® seat, and 
    straight through porting for bidirectional, high capacity flow and easy roddable cleaning
  • Blow-out proof stem provides a secondary stem seal in the full 
    open position
  • FKM o-ring seal and PTFE back-up ring below the stem threads to protect from 
    corrosion and galling; PTFE or Grafoil® packing optional
  • All stems are 316 stainless steel
  • All stem threads are rolled for strength and ease of operation
  • One-piece bonnet with a metal-to-metal seal to the valve body below 
    the bonnet threads
  • Slotted spring pin to prevent accidental loosening
  • Vinyl dust caps for bonnets and stems (non-packing)
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SPECIFICATIONS
Materials Zinc-nickel plated steel, electropolished 316 stainless steel
Connections Flange-flange, 1/2" NPT-flange
Pressure ratings Hard Seat: 10,000 psi @ 200 °F
Soft Seat: 6,000 psi @ 200 °F
Orifice size 0.187"
Flow coefficient Hard Seat: CV 0.44
Soft Seat: CV 0.76
Stem seal & type All 316 stainless steel stems with FKM o-ring and PTFE back-up ring below the threads, PTFE or Grafoil® packing optional
Options Panel mountings, o-ring materials, handles, packings, regulating stem and stem tips

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