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Monoflanges and VariAS-Blocks
General Features
Needle Valves acc. to ISO 15848

Screwed Bonnet
– Type 1 O-Ring Needle Seal + Graphite Packing
   Type 3 PTFE Packing

Features

  • Integral Valve Seat – Metal to metal seated
  • Non-rotating Needle
  • External Stem Thread – Packing below stem threads. Stem threads are protected from process media (non-wetted).
  • Stem with Cold Rolled Threads
  • Blow-out Proof Needle
  • Back Seat – Metal to metal secondary needle seal
  • Lock Pin – Eliminates unauthorized removal of the bonnet
  • Color Coded Dust Cap for operating thread protection
  • Needle Seal: Standard Packing in PTFE or Graphite plus FKM O-Ring Needle Seal – RGD resistant (RGD = Rapid Gas Decompression)
  • Max. allowable (Working) Pressure (PS): 420 bar (6,092 psi)
  • Anti-Tamper Valve Head Options available
  • All Non-wetted Parts in 316 Stainless Steel
  • Types also comply with the requirements of TA-Luft 2002
OS&Y Needle Valve acc. to ISO 15848

QS&Y Bolted Bonnet
– Type 1 O-Ring Needle Seal + Graphite Packing
   Type 3 PTFE Packing

Features

  • Integral Valve Seat – Metal to Metal Seated
  • Non-rotating Needle
  • External Stem Thread – Packing below stem threads.
    Stem Threads are protected from process media (non-wetted).
  • Stem with cold rolled threads
  • Blow-out proof Needle
  • Spring Washers for compensation of thermal expansion
  • Back Seat – Metal to metal secondary stem seal
  • Color Coded Dust Cap for operating thread protection
  • Needle Seal: Standard Packing in PTFE or Graphite plus FKM O-Ring Needle Seal - RGD resistant
  • Bonnet Seal Ring: Graphite
  • Fire Safe approved acc. to ISO 10497 and API 607; Graphite Packing only
  • Max. allowable (Working) Pressure (PS): 420 bar (6,092 psi)
  • Anti-Tamper Valve Head Options available
  • All Non-wetted Parts in 316 Stainless Steel
  • Types also comply with the requirements of TA-Luft 2002



ISO FE  Performance Data


ISO FE Type 1:
Class A 2,500 cycles / –29°C to 40°C
(–20°F to 104°F)
Class A    500 cycles / –29°C to 200°C
(–20°F to 392°F)
Class B 2,500 cycles / –29°C to 200°C
(–20°F to 392°F)

ISO FE Type 3:
Class B 2,500 cycles / –29°C to 200°C
(–20°F to 392°F)

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