Guardian II Metal Bellows Seal

Applications:
Acid Transfer,Chemical Processing,Chlor-alkali,Difficult-to-Seal Liquids,Inorganic Chemicals,Safety Systems,Toxic Services

Industries:
Volatile Organic Compounds,Leaching Acid,Bleach Chemicals,Acid Transfer

The Flowserve, Valtek, Guardian II, and Metal Bellows Seal control valve eliminates valve leakage. Using a formed metal bellows design with minimal welded joints, the Guardian II has a full-cycle life of up to 5 million cycles. This ensures years of safe and reliable operation in hazardous processes ranging from -320°C.

Like Flowserves Mark One globe valve, the Mark Eight features streamlined, constant area flow passages, top-entry trim, a four-way positioner, and a high thrust cylinder actuator. The Mark Eight is completely interchangeable with the Mark One except for the body, seat retainer, bonnet, and plug. The packing box, actuator, seat ring, flanges, and gaskets are all standard, off-the-shelf items for fast delivery and minimal parts inventory.

A metal shroud envelopes the bellows acting as a pressure boundary in service, allowing use of a single, pressurized gasket seal and preventing fluid contact with the bellows housing during normal operation. External pressurization of the bellows increases cycle life and the maximum allowable pressure, while eliminating ?bellows squirm.? The replaceable plug head allows trim changes without changing the bellows assembly.The Guardian II can be retrofitted to a standard Mark One valve by changing the plug and bolting, adding a bellows assembly, bellows housing and lower guide assembly.

Advantages

  • Full-cycle life of up to 5 million cycles
  • -320° to 1000° F (-196° to 538° C)
  • Pressures up to 1100 psi (75.8 Bar)
  • Formed metal bellows design
  • Wide selection of materials available

Applications:
Acid Transfer,Chemical Processing,Chlor-alkali,Difficult-to-Seal Liquids,Inorganic Chemicals,Safety Systems,Toxic Services

Industries:
Volatile Organic Compounds,Leaching Acid,Bleach Chemicals,Acid Transfer

Contact our Valve Specialist Team:

Brendan Merrigan (External) – Mob: 087 2598124                           

Internal Team

Brian Barry – Tel: 021 461 7211

Darragh Rodgers- Tel: 021 461 7241

Miriam Adair- Tel: 021 461 7235

Ross O’Donovan – Tel: 021 461 7230 

Shauna O’Connor – Tel: 021 461 7237

Tim Quigley – Tel: 021 461 7209

Vicki McGrath – Tel: 021 461 7207

Tel: 021 461 7200