OS&Y Bolted Bonnet
– Standard 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 needle seal
• Color Coded Dust Cap for operating thread protection
• Needle Seal:
  Standard Packing in PTFE and Graphite or Carbon filled PTFE – TA-Luft Option
• 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)
   – 689 bar (10,000 psi) optional
• Anti-Tamper Valve Head Options available
• All Non-wetted Parts in 316 Stainless Steel