What KAWAMOTO PUMP MFG. CO. does

KAWAMOTO PUMP MFG. CO. (株式会社川本製作所, Kawamoto Seisakusho Co., Ltd.) is a privately held Japanese general-purpose pump manufacturer headquartered in Nagoya, founded in 1915 and operating for over a century. The company designs, manufactures, and sells a comprehensive portfolio of water-moving equipment — centrifugal, turbine, submersible, cascade, oil, coolant, pure water, seawater, fire protection, vacuum, and booster pumps — alongside home-use pumps under the Kawa Ace series (including the award-winning Soft Kawa Ace NF3 and Kawa Ace Jet JF2) and water treatment equipment under the Aqua series (iron, manganese, and sterilization). Underlying technology centers on stainless-steel construction, inverter-driven PM motors (IE5 equivalent), and proprietary innovations such as the JAST Structure casing for vertical vortex pumps, a patented high-efficiency non-clogging impeller for drainage submersibles, and an initial-rainwater separator for the KAWA Taro rainwater-harvesting system; the broader 'Comfort Earth' initiative and e-star sub-brand group these around energy efficiency, recyclability, and human comfort.

The company makes money primarily through direct B2B/B2G hardware sales of pumps and water-treatment equipment to building facilities, residential and condominium developers, agricultural and fisheries customers, and industrial manufacturers, supplemented by professional maintenance and inspection services delivered through its wholly-owned subsidiary Kawamoto Service Co., Ltd. Go-to-market is sales-led via a nationwide network of regional sales offices (with recent relocations in Kobe and Kurume in 2025) and industry trade shows (Mechatro-Tech Japan, the Piping and Building Equipment Expo). Pricing is quote-based with multi-year contract cadence on commercial and industrial deployments; a homeowner/retail channel and a contractors' network distribute the consumer-facing Kawa Ace line, supported by CAD data downloads, technical handbooks, and operation manuals. Notable customers include MIRARTH Holdings and Takara Leben, which have standardized Kawamoto-supplied battery-backup water supply pumps into the MIRARESI disaster-prevention condominium platform across all new LEBEN and NEBEL projects starting in 2026.

Strategically, KAWA has remained a Japan-domestic operator with no disclosed international expansion, M&A, external funding, or public listing. Recent emphasis areas include high-efficiency inverter pump lines, sustainability positioning via Comfort Earth / e-star, disaster-resilience integration with developer partners, and incremental digital tooling for pump specification — supported by continued reinvestment in regional sales-office infrastructure.

Name

KAWAMOTO PUMP MFG. CO.

Legal name

株式会社川本製作所

Website

https://kawamoto.co.jp

Company type

Private

Founded year

1915

Operating status

Operating

Headcount range

501–1,000 employees

Short description

KAWAMOTO PUMP MFG. CO. is a privately held Japanese general-purpose pump and water-treatment equipment manufacturer, founded in 1915 and headquartered in Nagoya. It serves building, residential, agricultural, fisheries, and industrial customers through direct nationwide sales offices, plus maintenance services via its Kawamoto Service subsidiary.

Ownership category

akta.pro rank

Product category

Industrial Pumps

NAICS

Pump and Compressor Manufacturing (33391), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914)

SIC

Pumps & Pumping Equipment (3561)

akta.pro primary industry

Centrifugal Pumps (IMAHANAA)

akta.pro secondary industries

Pump & Compressor Packages (Skids, Booster Sets) (IMAHANAG), Dispensing & Pump Systems (Pumps, Sprayers, Misters, Droppers) (IMALAJAB), Water Systems & Treatment (Pumps/Boilers/Water Heaters/Filtration) (IMAIABAK), Pump Systems & Pumping Stations (Surface, Submersible, Booster) (AFAAACAC)

Keywords

• Industrial pumps
• Water treatment equipment
• Submersible pumps
• Building facility pumps
• Centrifugal pumps

Headquarters

HQ city

Nagoya

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. General-purpose Pump Manufacturing and Sales: Manufacture and sale of various pump types for building facilities (water supply, drainage, HVAC, disaster prevention), agricultural/fishery use (irrigation, greenhouse, aquaculture), home use, snow melting, deep well applications, and general-purpose applications.
2. After-sales Service and Maintenance: Maintenance and inspection services provided by specialized technicians for pumps and water-related equipment. Professional services include periodic health checkups, troubleshooting, and parts replacement recommendations.
3. New Technology Research and Development: Research and development of new technologies for pump systems and water treatment solutions.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels4 records

Core offering

KAWAMOTO PUMP MFG. CO.,LTD. manufactures and sells a comprehensive lineup of general-purpose pumps and water treatment equipment. The product range covers centrifugal, turbine, submersible, cascade, oil, coolant, seawater, fire-protection, vacuum and blower pumps, as well as automatic water supply units, booster pumps, residential home-use pumps (Kawa Ace series), and water treatment systems (Aqua series) for iron/manganese removal and sterilization. The company also provides after-sales maintenance and inspection services through its subsidiary Kawamoto Service Co., Ltd.

Product overview

KAWAMOTO PUMP MFG. CO. is a general-purpose pump manufacturer with over 100 years of history, offering a comprehensive portfolio of water pumps and related equipment. The company's product lineup centers on industrial and commercial pumps (centrifugal, turbine, submersible, sewage, fire protection, seawater), home-use pumps under the Kawa Ace Series brand, and water treatment equipment under the Aqua Series. The company promotes energy efficiency through its 'Comfort Earth' environmental initiative and the e-star sub-brand for energy-saving products, leveraging 'Stainless & Inverter' technology. Key product families include Ponper KDP3/KFE/KVF2 automatic water supply units, drainage submersible pumps (BUW/BUM), and rainwater utilization systems. The company provides CAD downloads, technical handbooks, and maintenance services alongside its core product sales.

Differentiator

Problem solved

Functional benefit

Brands

• Comfort Earth (コンフォートアース): Environmental initiative brand encompassing three themes: Energy reduction activities (Energy), Ecology/3R activities (Ecology), and human-friendly comfortable living (Human Kind).
• e-star series
• Aqua series (アクアシリーズ)
• Kawa Ace series (カワエースシリーズ)
• Pumper/Konpa series (ポンパー)
• Kawa Hope series (カワホープシリーズ)
• KAWA Taro (カワ太郎)
• Baby Sweet (ベビースイート)

Products and services

• Centrifugal Pumps (渦巻ポンプ) General-purpose centrifugal pumps for building equipment, industrial, and water supply applications.
• Turbine Pumps (タービンポンプ) Turbine pumps for various water supply and industrial applications.
• Clean Water Submersible Pumps (清水用水中ポンプ) Submersible pumps for clean water applications including warm water uses.
• Drainage Submersible Pumps (排水用水中ポンプ) Submersible pumps for drainage and wastewater applications, including patented high-efficiency non-clog variants.
• Cascade Pumps (カスケードポンプ) Cascade pumps for water distribution systems.
• Oil Pumps (オイルポンプ) Pumps designed for oil and petroleum applications.
• Coolant Pumps (クーラントポンプ) Pumps for coolant and cutting fluid circulation in machining applications.
• Pure Water/Special Liquid Pumps (純水・特殊液用ポンプ) Pumps designed for pure water and specialized liquid applications.
• Kawahope Series - Seawater Pumps (カワホープシリーズ) Corrosion-resistant pumps specifically designed for seawater and marine applications.
• Manual/Disaster Prevention Pumps (手動・防災用ポンプ) Manual pumps and disaster prevention systems for emergency water supply and fire protection.
• Vacuum Pumps and Blowers (真空・送風機) Vacuum pumps and air blowers for industrial processes.
• Direct Connection Booster Pumps (直結給水用ブースターポンプ) Booster pumps directly connected to water supply lines for increased water pressure.
• Automatic Water Supply Units (自動給水装置) Automated water supply units for buildings, featuring pump systems with control panels for various tank configurations (land, submerged, elevated, and pressure tank).
• Kawa Ace Series - Home Use Pumps (カワエースシリーズ) Home use pumps including Soft Kawa Ace (NF3), Kawa Ace Jet (JF2), and related models for residential water supply from shallow and deep wells.
• Aqua Series - Water Treatment Equipment (アクアシリーズ) Water treatment machines for iron removal, manganese removal, and sterilization from well water and other sources.
• Fire Pumps (消火ポンプ) Fire protection pump systems for buildings and industrial facilities.
• After-Sales Maintenance and Inspection Service Maintenance and inspection services provided by specialized technicians for pumps and water-related equipment, including periodic health checkups, troubleshooting, and parts replacement recommendations, delivered through subsidiary Kawamoto Service Co., Ltd.

Named customers2 records

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered major.

• MIRARTH Holdings Co., Ltd.majorStrategic or Co-development Partner · 31 March 2026MIRARTH Holdings and its group company Takara Leben are standardizing the disaster prevention condominium system 'MIRARESI' - equipped with solar panels and storage batteries - across all new condominium properties under their brands. KAWAMOTO PUMP supplies water supply pumps that can operate on storage battery power during disasters, ensuring water supply when electricity is unavailable. This addresses the top resident concern of toilet use during emergencies (34% in surveys).
• Takara Leben Co., Ltd.majorStrategic or Co-development Partner · 31 March 2026Takara Leben is implementing the MIRARESI disaster prevention system in all new condominiums under LEBEN and NEBEL brands. KAWAMOTO PUMP provides the specialized water supply pumps that operate on battery power during disasters. First implementation: 'LEBEN Hikarigaoka GLOW GARDEN' scheduled for sale in April 2026.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Pentair plc: Global water solutions company offering pumps, filtration, and treatment for residential, commercial, and industrial applications. Overlaps with KAWAMOTO in residential and commercial water pumps plus water-treatment equipment.
• Ebara Corporation: Major Japanese industrial machinery manufacturer producing centrifugal pumps, compressors, turbines, and chillers. Overlaps with KAWAMOTO in centrifugal pumps, building services, and industrial applications but operates at much larger scale and broader scope.
• Xylem Inc. Global water-technology company providing pumps, treatment, and smart metering for utilities and industrial customers. Overlaps with KAWAMOTO in water/wastewater pumps and increasingly in digitally connected pump solutions.
• Sulzer Ltd. Swiss industrial engineering company producing pumps, rotating equipment, and services for water, energy, and process industries. Competes with KAWAMOTO in industrial centrifugal pumps and aftermarket service.
• Wilo SE: German pump specialist focused on building services, water management, and industrial applications, with strong emphasis on high-efficiency and smart pumps. Directly comparable to KAWAMOTO's energy-efficient and inverter pump positioning.
• KSB SE & Co. KGaA: German manufacturer of pumps, valves, and related service for building services, water, energy, and industry. Comparable in centrifugal and submersible pumps plus an extensive service network mirroring KAWAMOTO's hardware-plus-service model.
• Grundfos: Global Danish pump leader with strong presence in building services, water utility, and industrial pumps, plus energy-efficient and intelligent pumping solutions. Competes with KAWAMOTO in inverter-equipped and high-efficiency pump categories.

Emerging players

• Franklin Electric Co. US-based manufacturer of water systems, fueling, and pumps, with growing exposure to clean water and energy-efficient pumping. Comparable product overlap in residential/light-commercial water pumps and treatment systems.

Direct peers

• Torishima Pump Mfg. Japanese pump manufacturer focused on large centrifugal pumps for power plants, water infrastructure, and industrial applications. Comparable in engineering depth and Japan-centric industrial customer base.
• Tsurumi Manufacturing: Japanese pump manufacturer specializing in submersible pumps, sewage/drainage pumps, and water-treatment equipment. Highly comparable to KAWAMOTO across submersible drainage pumps, B2B/B2G channels, and domestic Japan focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UCeZqGsP1u8tC6zKYsyo0DPg
• Facebookfacebook.com/kawamoto.pump

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about KAWAMOTO PUMP MFG. CO.