FY Vertical Sump Pump Chemical Transfer Pump

The FY vertical sump pump transfers liquids from storage tanks, process vessels, underground pits, and collection sumps. It uses a vertical, single-stage, single-suction centrifugal structure. The hydraulic section operates below the liquid level, while the motor stays above the tank.

This layout removes the need for suction priming. It also keeps the motor away from the process liquid. Therefore, the FY pump is a practical choice for chemical plants, wastewater systems, and industrial tank-transfer duties.

Jingjiang Liutong Pump Industry Co., Ltd. supplies FY pumps with different flow rates, heads, immersion depths, materials, impellers, bearings, and motor options.

FY Vertical Sump Pump Specifications

The full FY series includes both small chemical-transfer pumps and large industrial units. Actual performance depends on the pump size, impeller, speed, liquid density, viscosity, and installation depth.

How the FY Sump Pump Works

The mounting plate supports the complete pump on top of the tank. A long vertical shaft connects the dry-mounted motor to the impeller below the liquid level.

When the motor starts, the impeller draws liquid through the bottom inlet. It then raises the pressure and moves the liquid into the pump casing. Finally, the separate discharge pipe carries the liquid above the tank.

Because the pump casing stays submerged, the pump does not need a foot valve or vacuum priming system. However, the pump inlet must remain below the minimum operating liquid level.

Long-Shaft Pump Construction

The FY vertical sump pump normally includes:

• Motor support and coupling
• Bearing housing
• Tank mounting plate
• Long vertical shaft
• Support column
• Guide bearing
• Submerged pump casing
• Centrifugal impeller
• Bottom suction strainer
• Separate discharge pipe
• Flanged outlet connection

The product shown in the photos is the pump assembly without a mounted electric motor. During installation, the motor connects to the upper shaft through the coupling and motor support.

Reference FY Pump Models

*Motor power is based on water-like liquids with a relative density below 1.0. Denser or more viscous liquids may require a larger motor.

Main Product Benefits

• No priming is needed during normal operation
• The motor remains dry and easy to inspect
• The tank-mounted design saves floor space
• Long-shaft construction suits deep vessels and pits
• No conventional shaft seal is required at the submerged pump casing
• Different impellers suit different liquid conditions
• Corrosion-resistant materials are available
• Immersion depth can match the tank design
• Explosion-proof motors are available
• Pump components remain accessible from the tank top

Material Options

The correct material depends on the chemical composition, concentration, temperature, and solid content of the liquid.

Available materials may include:

SS304 suits many general process liquids. Meanwhile, SS316 and SS316L offer better resistance to selected chlorides, acids, and chemical solutions. Special alloys can also be reviewed for more severe conditions.

Material compatibility must always be confirmed with the exact liquid data.

Impeller and Bearing Options

A closed impeller provides stable performance for clean liquids. In contrast, an open or semi-open impeller offers a wider passage for liquids containing small particles or short fibers.

Standard FY pumps are mainly intended for clean or lightly contaminated liquids. If the liquid contains abrasive particles, crystals, or solids, the manufacturer should review the particle size and concentration.

External bearing lubrication can be added for selected particle-containing liquids. This protects the submerged guide bearing when the process liquid cannot provide suitable lubrication.

Industrial Applications

FY vertical sump pumps are commonly used for:

• Chemical storage tank unloading
• Acid and alkali transfer
• Petrochemical process systems
• Pharmaceutical production
• Metal surface treatment
• Electroplating solutions
• Industrial wastewater collection
• Paper and pulp processing
• Metallurgical liquid transfer
• Environmental treatment systems
• Process vessel circulation
• Underground sump drainage

The standard pump should not handle large solids, heavy slurry, or highly abrasive media without a modified structure.

Installation and Operation

Install the pump vertically on a strong, level mounting plate. In addition, make sure the tank opening and support structure can carry the weight of the pump, motor, discharge pipe, and operating liquid.

The pump casing must stay below the minimum liquid level. If the level falls too low, the pump may draw air and lose performance. Therefore, a liquid-level controller or dry-run protection device is recommended.

Before startup:

• Confirm the correct motor rotation.
• Check shaft and coupling alignment.
• Turn the shaft manually to check for rubbing.
• Verify the minimum liquid level.
• Open the discharge valve as required.
• Check all flange connections.
• Confirm the guide-bearing lubrication method.
• Test the motor protection system.

During operation, monitor flow, pressure, vibration, bearing temperature, motor current, and tank level. Avoid running the pump with a blocked inlet or closed discharge for a long period.

Pump Selection Information

For accurate selection, please provide:

• Required flow and total head
• Liquid name and concentration
• Operating temperature
• Density and viscosity
• Solid content and particle size
• Tank height and diameter
• Required immersion depth
• Minimum and maximum liquid levels
• Motor voltage and frequency
• Hazardous-area classification
• Flange and piping standards
• Continuous or intermittent operation

These details help the manufacturer select the pump size, shaft length, impeller, bearing, motor power, and construction material.

Manufacturer Configuration Support

Jingjiang Liutong Pump Industry Co., Ltd. provides FY pump selection, material matching, immersion-depth design, motor configuration, and installation support.

Custom options include stainless steel wetted parts, open impellers, external bearing lubrication, cooling or insulation jackets, explosion-proof motors, special flanges, and project-specific mounting plates.

Before delivery, the pump can be checked for dimensions, assembly, shaft rotation, material configuration, and operating performance according to the order requirements.

Frequently Asked Questions

Is an FY vertical sump pump fully submersible?

No. Only the hydraulic section and part of the long shaft operate in the liquid. The motor remains above the tank.

Does the pump need priming?

No. The pump casing is submerged in the liquid during normal operation.

Can it transfer corrosive chemicals?

Yes, if the casing, impeller, shaft, bearing, and gasket materials suit the exact chemical.

Can the immersion depth be customized?