Pump products

burks BV BN High-Efficiency Vertical Multistage Pump

Product description: burks BV/BN high-efficiency vertical multistage pump, BV cast iron, BN all stainless steel, rated flow rate 1~260m³/h in 21 steps, inline structure can be installed vertically or horizontally, used fo
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Product Overview

The BV/BN series is a high-efficiency, energy-saving vertical multistage centrifugal pump with an inline structure: the inlet and outlet are on the same horizontal line and have the same pipe diameter, making the structure and piping more compact. It can be installed vertically or horizontally (horizontal installation requires an additional fixing module). It can be used alone as a Booster pump or combined with booster equipment for building and industrial booster systems.

Series Differences

Series	Description
BV	Cast iron vertical multistage pump, used for liquid transfer, circulation and boosting of hot and cold circulating water, etc.
BN	All-stainless-steel vertical multistage pump; selected when the system requires all wetted parts of the pump to be made of high-grade stainless steel
BNP	High-pressure type
BNF	High-temperature type, capable of handling media temperatures from -15℃ to +180℃
MPC-BV / MPC-BN	Pump-mounted variable frequency pump
COR-BV / COR-BN	Non-negative pressure variable frequency unit

Model Designation

BV/BN + rated flow rate (m³/h) - number of impeller stages (a trailing "-number" indicates the number of small impellers). For example, BV1-2 means a rated flow rate of 1m³/h with 2 impeller stages; BV1-5-1 means 5 impeller stages including 1 small impeller.

Technical Parameters

Pumped medium	Thin, non-explosive liquids free of solid particles or fibers; when the medium density or viscosity is greater than that of water, a motor with higher power must be used
Liquid temperature	Standard type -15℃～+105℃ (higher or lower temperatures available on request)
Ambient temperature	≤+40℃; when the ambient temperature exceeds +40℃ or the altitude exceeds 1000 m, the motor output power decreases and a larger model must be selected
Maximum working pressure	Standard type PN10; PN16 / PN25 available on request
Power supply	Three-phase; voltage and frequency as per the motor nameplate; three-phase motors must be connected to a motor starter

Rated Flow Rate Series (m³/h, 21 ratings in total)

1 / 2 / 3 / 4 / 5 / 8 / 10 / 12 / 15 / 16 / 20 / 32 / 45 / 64 / 90 / 100 / 130 / 160 / 190 / 220 / 260

BV1 series models: BV1-2, BV1-3, BV1-4, BV1-5-1, BV1-5, BV1-6, BV1-7, BV1-8, BV1-9, BV1-10, BV1-11, BV1-12, BV1-13, BV1-15, BV1-17, BV1-20-2, BV1-21, BV1-23, BV1-25, BV1-27, BV1-30, BV1-33, BV1-35, BV1-36. For the head, power and installation dimensions of each model, please refer to the selection manual or consult us for confirmation.

Installation and Startup Points

Do not start the pump before it is fully filled with liquid and vented; dry running is strictly prohibited (dry running will damage the bearings and shaft-end seal); the pump must be fixed to a reliable, solid foundation with bolts through the flange holes or pump base holes; the motor must not be installed upside down on the floor; fitting expansion joints or vibration-damping mounts at the inlet and outlet can reduce noise.