Flowserve QB Pusher Seal

Name: Flowserve QB Pusher Seal
Brand: Flowserve
SKU: flowserve-451

رقم القطعة: flowserve-451

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الوصف

QB Series seals are balanced pusher seals available in single and dual seal configurations used for sealing environmentally-restricted products and meeting the most stringent regulations. The QB Series 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 - Combat dirty services with the clog-resistant large, single coil spring in the QBS seal - Handle low lubricity hot water without the need for auxiliary cooling systems with the QBU seal - Handle vaporizing hydrocarbons with the QBQ seal - Handle low vapor pressure margin with the QBQ LZ seal, featuring Precision Face Topography wave pattern on the stationary seal face - Low to moderate pressurized barrier dual seal applications are handled by the QBB face-to-back configuration - Moderate and high pressure pressurized dual seal applications, including Piping Plan 53B, are handled by the QB2B back-to-back configuration - Choice of throttle bushing design: fixed, floating, or segmented

المواصفات

Brand line	Flowserve
Standards	API 682
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)
Pressure	up to 51.7 bar (750 psi)
Arrangement 1 single seal (Common Piping Plans 11, 13, 23, 32, 62)	QB; QBQ; QBS; QBU
Arrangement 2 unpressurized dual wet seal (Common Piping Plans 52)	QB/QB; QBQ/QBQ; QBQ LZ/QBQ
Arrangement 2 unpressurized dual seal with dry running backup (Common Piping Plans 72, 75, 76)	QBQ/GSL; QBQ LZ/GSL
Arrangement 3 pressurized dual wet seal (Common Piping Plans 53A, 53B, 53C, 54)	QBB/QB; QB2B/QB