Select Biral circulating, in-line and submersible drainage pumps configured for your HVAC, hot water or industrial wastewater network. We supply complete pump units and genuine overhaul spares.
Biral pump portfolio
Select the required pump line and submit your engineering parameters. The card CTA automatically attaches the chosen product group to your enquiry.
Biral ModulA circulating pumps
The flagship line of Biral ModulA variable-speed high-efficiency circulating pumps is engineered for heating, ventilation, air conditioning and industrial cooling systems in commercial and production facilities.
The family includes three dedicated variants: ModulA RED for hydronic and low-temperature heating circuits, ModulA BLUE featuring bronze or stainless steel hydraulics for potable domestic hot water loops, and ModulA GREEN with heavy-duty thermal and condensation insulation for chilled water and geothermal installations.
For critical applications and boiler rooms requiring duty standby operation, Biral manufactures ModulA-D twin-head models that enable automatic changeover upon fault, alternating duty cycles, and parallel operation during peak thermal demands.
The integrated electronic inverter module incorporates a wireless Bluetooth interface that provides real-time hydraulic monitoring, parameter adjustments and diagnostics via the Biral ONE mobile platform.
Operating modes include proportional differential pressure, constant differential pressure, and variable constant speed control.
When specifying a replacement pump or spare module, provide the complete factory code from the nameplate, including nominal connection diameter, rated head, overall port-to-port dimension, and electronic hardware revision.
Biral PrimAX energy-efficient pumps
The Biral PrimAX series of compact wet-rotor circulating pumps represents high-efficiency fluid-handling technology designed for residential and multi-family heating installations, radiator loops and hydronic radiant floor systems.
With an Energy Efficiency Index (EEI) of ≤ 0.14–0.15 for the PrimAX RED T2 generation, these units surpass standard regulatory efficiency benchmarks and substantially decrease annual operating electricity costs.
A primary mechanical feature of the PrimAX pump is its integrated automatic anti-blocking mechanism (Deblockiersystem), which produces high-torque rotational pulses during startup to break away limescale buildup and debris after extended summer shutdowns without requiring physical rotor intervention.
The front control display includes a real-time flow rate indicator (Durchfluss-Indikator) showing volumetric flow conditions.
Electrical connection is facilitated by the quick-connect Biral Connector plug with spring-cage terminals, enabling fast wiring in confined boiler alcoves and manifold cabinets. With a body installation depth of only 103.3 mm, PrimAX fits readily into pre-assembled compact hydraulic stations.
To identify the appropriate model, specify connection thread size (G 1″ or G 1½″), port-to-port installation length (130 mm or 180 mm), and maximum head requirement (3 m, 4 m, 6 m, or 8 m).
Biral VariA inline circulating pumps
The Biral VariA series of in-line centrifugal pumps is engineered for medium to large-scale industrial heating, ventilation and technical chilled-water distribution plants.
The in-line configuration features suction and discharge flanges arranged along the same centerline, allowing the pump to be mounted directly into horizontal or vertical pipeline sections without pipe redirection or complex foundation arrangements.
VariA pumps utilize a dry-rotor construction with precision mechanical shaft seals suitable for circulating clean water and glycol-based heat transfer mixtures up to 50% concentration.
The range spans connection sizes from DN 32 up to DN 150 with motor ratings reaching 18.5 kW, accommodating high flow rates and substantial system pressures.
Biral supplies the VariA family in both fixed-speed configurations fitted with standard IE3/IE4 efficiency three-phase motors and variable-speed versions featuring integrated frequency inverters for dynamic capacity control via 0–10 V inputs or Modbus communication.
Heavy-duty cast iron housings with electrodeposition cataphoretic coating protect the assembly against internal and external oxidation under demanding industrial conditions.
Specify flange diameter, duty point flow rate and differential head, operating temperature, and liquid composition when submitting a replacement enquiry.
Biral AXW domestic hot water pumps
The specialized Biral AXW circulation pump series is designed for domestic hot water (DHW) recirculation loops and potable water distribution networks in residential, hospitality and industrial facilities.
Pumping drinking water demands strict adherence to hygiene standards; hence, AXW hydraulic casings are manufactured from corrosion-proof bronze or precision stainless steel, preventing heavy metal leaching, oxidation and limescale accumulation.
The smart electronic controller incorporates a self-learning adaptive schedule that logs diurnal and weekly hot water consumption habits, automatically timing operational cycles to match user demand.
This ensures immediate hot water availability at tapping points, suppresses thermal pipe distribution losses, and significantly reduces electric power consumption during dormant hours.
The hydraulic assembly frequently includes an integrated non-return check valve on the discharge side and a ball shut-off service valve on the suction port, enabling fast maintenance without draining the entire plumbing circuit.
For an accurate replacement or selection, provide pipe diameter, thread type, port-to-port dimension, and specific operating water temperature limits.
Biral CompAX and MultimAX pumps
The Biral CompAX and MultimAX circulating pump series deliver versatile compact solutions for closed heating, cooling, heat recovery and solar thermal circuits. CompAX units are engineered for space-restricted distribution manifolds, compact mixing stations and heat interface units (HIUs).
Featuring electronically commutated synchronous permanent-magnet motors paired with microprocessor speed regulation, CompAX pumps continuously adapt their hydraulic output to variable thermal loads.
The MultimAX line acts as a heavy-duty multi-purpose pump platform suitable for dual-season HVAC networks that switch between heating in winter and chilled water circulation in summer.
The hydraulics demonstrate high chemical resistance to glycol anti-freeze solutions and system inhibitors, while the hermetically sealed stainless steel rotor canister eliminates external fluid leakage risks.
Operating modes are toggled via intuitive dial or membrane controls with status LEDs displaying proportional pressure or constant curve modes.
To request an equivalent model, supply the existing pump part number, supply voltage (single-phase 230 V or three-phase 400 V), port-to-port dimension, and working fluid properties.
Biral Birox and Constra submersible drainage pumps
Biral submersible drainage and wastewater pumps comprise the Birox, Constra, TopLine and Willy product lines, designed for dewatering excavations, basements, rainwater sumps and industrial graywater collection systems.
The Biral Birox series is constructed with a high-grade stainless steel jacket and casing, tailored for cellar dewatering, sump drainage, and municipal non-faecal effluent handling.
Units are available with integral float switches for automated start/stop or electronic level sensors suitable for narrow collection pits.
The heavy-duty Biral Constra series is engineered for demanding civil engineering, construction site and quarry dewatering duties; Constra hydraulics utilize wear-resistant hardened alloys that resist high sand, silt and sludge abrasion.
Dual mechanical seals arranged in an intermediate oil barrier chamber insulate the electric motor against water ingress during partial submersion or dry-run situations.
When requesting a drainage pump selection, specify wastewater characteristics (solid particle size, abrasives or fibrous content), required vertical discharge head, pipe length, and electrical voltage.
Biral HP, NB and NT industrial pumps
The Biral industrial portfolio features end-suction volute casing and multistage centrifugal pumps across the HP, NB and NT series, tailored for municipal water supply stations, booster skids, industrial process cooling and fire suppression networks.
Standardized end-suction models NB and NT adhere strictly to European norms EN 733 (DIN 24255) and ISO 2858, ensuring dimensional flange interchangeability with standard plant infrastructure.
The back-pull-out maintenance design allows the entire rotating assembly—including impeller, shaft seal and bearing bracket—to be removed for overhaul without disturbing the volute casing or adjacent pipework.
High-pressure multistage HP centrifugal pumps generate multi-bar discharge pressures with optimized hydraulic efficiency across continuous operations.
Cast iron, ductile iron, and austenitic stainless steel (AISI 304 / AISI 316) hydraulic options satisfy clean water, condensate and slightly corrosive industrial chemical duties.
When enquiring about industrial pump supply, submit the existing unit nameplate or specify the duty point (flow in m³/h, differential head in meters), inlet pressure, and motor electrical parameters.
Biral spare parts and maintenance kits
To preserve continuous operational reliability and design parameters across your Biral pump installations, we supply factory-original spare parts, maintenance packages and overhaul kits.
The parts catalogue encompasses precision mechanical shaft seals in silicon carbide, tungsten carbide and ceramic face combinations, dynamically balanced impellers in engineered polymers, bronze and stainless steel, replacement volutes, rotor shaft assemblies, motor stators, complete pump drive heads, electronic frequency converter modules, interface terminal PCBs, and pressure sensors.
For preventive maintenance schedules, we provide pre-packaged gasket and seal kits containing EPDM and FKM (Viton) O-rings, non-asbestos flat gaskets, and retaining fasteners.
Replacement parts are identified through the unique factory article number or pump serial number recorded on the equipment identification plate.
Deploying genuine Biral spare parts guarantees that factory energy efficiency, calibrated hydraulic head-flow curves and seal integrity are maintained without incurring unplanned production downtime.
To replace an existing unit, provide the exact model code from the pump rating plate, flange or thread dimensions, and port-to-port installation length. For greenfield systems or plant expansion, submit design flow rate in m³/h, total dynamic head in meters or bars, fluid operating temperature, and liquid type. Include power supply parameters and ambient installation environment details.
Maintenance parts and overhaul kits
When ordering Biral replacement parts, communicate the pump serial number and parts diagram item identifier. If factory drawings are missing, photograph the removed component and note critical dimensions such as shaft diameter and housing seat dimensions. Avoid guessing unknown part numbers; our team validates compatibility directly against technical documentation.
Submit your equipment list, target quantities and delivery destination. Commercial pricing, delivery timelines, terms and documentation are finalized per individual inquiry. Official partner status and compatibility assertions are not made without engineering verification.
