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HAM-LET ASTAVA Line of Monoflange Valves


HAM-LET ASTAVA Line of Monoflange Valves

We are pleased to present you with the New Product Announcement (NPA) for the Ham-Let ASTAVA line of Monoflange valves.
The Monoflange valve series is an extension to the current Manifold line utilizing the Ceramic Ball tip Stem and NACE compliant
materials as standard. This series is designed to seamlessly connect process piping to instrumentation.
By offering a primary isolate bonnet, our line of monoflanges are able to replace bulky conventional assemblies with a single efficient product.

Main features:

  • Certified for ISO 15848-1:2006(E), (With PEEK or Polyimide seals)
  • Working pressure range up to 10,000 psi
  • Working Temperature range up to 550°C (1022°F)
  • Blowout-proof stem
  • Integrated back seat on stem for a secondary seal in the fully opened position
  • Safety stop pin – prevents the bonnet from detaching the body due to vibration
  • Stem seals below stem threads
  • A choice of O-ring materials
  • Oxygen clean per ASTM G-93 as an option
  • 100% Factory Tested Compliant with MSS–SP–99
  • Direct mount flange design per IEC61518 / DIN19213
  • Available in single block, block and bleed and double block and bleed configurations as well as tailor made solutions
  • Option for primary isolate bolted bonnet, OS&Y, Fire Safe BS 6755 part 2, Supagraf premier packing in accordance with API 607
  • Flange connections from 1/2” to 2” in accordance with ASME B16.5, API or EN 1092-1
  • Anti-tamper handles for vent bonnet


  • Space saving in relation to traditional block and bleed valves
  • Less leakage points
  • Lighter than equivalent traditional assembly
  • Reduced maintenance
  • Simpler installation
  • Option to use as primary isolate


  • The formal NPA and catalog are attached (in PDF form)
  • Marketing Presentation is attached (in PDF form)
  • Prices are loaded to the GAL System for the opened items
  • For additional information, please contact valves product management team



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