QBW Flowserve Mechanical Seal Dual Pressurized Face External Mechanical Seal

Flowserve QBW Dual Pressurized-Face to Back Cartridge Mechanical Seal for Pump

• Mechanical Seals
• Pump Seals
• Pusher Seals

QBW seals are balanced pusher seals available in dual seal configurations used for sealing environmentally-restricted products and meeting the most stringent regulations. The QBW is fully compliant with API 682 Type A requirements.

Features and Benefits

• Greater reliability and installation ease assured by rugged components, heavy duty seal faces, and cartridge seal configuration
• Satisfies all API 682 design and qualification test requirements for single and dual arrangement seals
• Optimal face cooling and reduced distortion with available multiport injection
• Increased safety and environmental compliance assured by dual seal arrangement, which provides for safety backup and emissions control in hazardous services
• Longer equipment life and reliability from design that runs cooler and is less sensitive to vapor pressure margin, even under upset conditions

Specifications

• API 682
• Pressure: up to 51.7 bar (750 psi)
• Temperature: -40° to 204°C (-40°F to 400°F)
• Speed: up to: 23 m/s (75 fps)
• Sizes: 12.7 to 139.7 mm (0.500 to 5.500 inch)

Industries

• Power
• Nuclear
• Conventional Steam
• Combined Cycle
• Biomass & MSW
• Chemicals
• Basic (Organic & Inorganic)
• Water
• Water Management
• Desalination
• Oil & Gas
• Downstream Processing