QB

Balanced General Service Pusher Seal

• Brands:
  Flowserve
• Applications:
  
• Industries:
  Waste Processing,Pharmaceuticals,Water Handling and Treatment,Products Pipeline,Water Injection,SAGD,Acid Transfer,Heavy Oil and Upgrading,Alkylation,Slurry Processing,Auxiliary,Solvents,Catalytic Cracking,Utilities,Caustic and Chlor-Alkali,Crude Handling and Treatment,Crude Pipeline,Delayed Coking,Distillation,Hydrocraking,Hydrotreating,Logistics and Tank Farm,Volatile Organic Compounds,Polymers
• Standards:
  API682

Single, balanced, multi-spring, pusher seal for general service, primarily applied in the petrochemical and chemical industry. The QB complies fully with all requirements of API 682 type A. Design variations include those mentioned below and customized QBW’s.

QBQ
High balanced, low emission, light hydrocarbon design, same operating limits as QB, specific gravity’s down to 0.45 with multi-port flush.

QBB
Dual balanced rotating assembly option (QBB) – provides reverse pressure capability for API 682 arrangements 3 requirements

QBU
Lube-groove design for hot water service without extra cooling. Pressure: To 255 psi (17.5 bar), Temperature: To 340°F (170°C)

QB-GSL
Non-contacting seal prov

QB Chart