centrifugal pump with vacuum siphon tank

A compact vacuum siphon tank (also called a siphon bucket or vacuum tank) designed to convert a standard centrifugal pump into a self-priming unit. The sealed siphon tank uses vacuum to produce suction, enabling routine centrifugal pumps to achieve a self-suction (self-priming) effect with a practical suction lift of approximately 4 m. Engineered for easy assembly and straightforward maintenance, the siphon tank delivers reliable priming performance at a lower cost than dedicated self-priming pumps.

Key features

• Enables self-priming: When paired with a conventional centrifugal pump, the siphon tank creates self-suction performance up to ~4 m suction lift.
• Cost-effective: Cheaper than integrated self-priming pumps; the pump and tank are separate so only the damaged pump typically needs replacement.
• Simple installation and maintenance: Modular design allows easy connection to existing centrifugal pumps and simplifies inspection and servicing.
• Durable materials: Tank is made from corrosion-resistant engineering plastic (suitable for typical water and similar liquids).
• Flexible operation strategy: Supports “one in use, one standby” pump arrangements while reusing the same siphon tank to reduce procurement costs.

Applications

• Water transfer and supply systems
• Irrigation and agricultural pumping
• Dewatering and drainage
• Industrial process water handling where a standard centrifugal pump needs automatic priming capability

Important considerations

• Occupies more footprint than an integrated self-priming pump due to the separate tank assembly.
• Not a substitute for specialized submersible pumps where submerged depth exceeds the recommended range; submerged plastic pumps are typically limited to shallow depths (manufacturing limits often keep submersion below ~2 m).
• Proper installation requires correct piping, check valves and air-tight connections to maintain vacuum performance; match the centrifugal pump’s flow and head characteristics to the siphon tank capacity for reliable priming.

What you get

A vacuum siphon tank/bucket sized to pair with a standard centrifugal pump (model references available). Ideal for plant managers and procurement teams looking to add self-priming capability to existing centrifugal pumps while minimizing purchase and maintenance costs.