What Protec Arisawa does

Protec Arisawa is the global leader in the design and manufacture of Fiber Reinforced Plastic (FRP) Pressure Vessels for membrane filtration systems, serving water treatment and desalination operators worldwide. Founded in 1971 and operating under Japanese conglomerate Arisawa Manufacturing Company (previously under Bekaert), the company produces custom-engineered pressure vessels in five standard diameters (4", 8", 9", 11", 16") with pressure ratings from 75 to 1800 PSI for reverse osmosis, nanofiltration, ultrafiltration, and microfiltration applications. Its proprietary filament winding technology uses fiberglass roving with a custom blended epoxy resin system cured at elevated temperature, and it offers multiple porting configurations (End-Ported, Side-Ported, Mega Side-Ported, and Center Port) with the Center Port design delivering 35-40% energy savings by reducing feed pressure from 90-100psi to 53-55psi.

The company manufactures across three regional production facilities — Vista, California (Americas), Munguia, Spain (EMEA), and Tokyo, Japan (APAC) — supported by a direct enterprise sales force with regional managers covering Central/North/East Europe, Iberia, UK, Italy, LATAM, Middle East, and South Africa, plus channel partners such as TransCrescent WaterTreatment Equipment Trading LLC in the Gulf region. Its product portfolio is sold exclusively through custom orders (no standard vessel models), complemented by a spare parts business (FRP collectors, seals, permeate ports, thrust cones, membrane adapters, shims) and field service including operator training, vessel inspection, and leak prevention support.

Protec Arisawa holds an extensive regulatory certification portfolio — ISO 9001, ASME Section X, NSF 61, CE, NR-13, PT, TSSA, CRN, ABS, DNV GL, and Bureau Veritas — enabling specification in regulated water, marine, and industrial applications globally. Revenue is generated primarily through hardware sales of FRP vessels and replacement parts, supplemented by custom engineering services and field service/training, with project-based pricing matched to each order. The company also serves secondary industrial composite markets (Electrical, Chemical, Shipping, Transports, Telecom) via rolling insulating panels, SMC compression molding, pultrusion, and manual molding products.

Name

Protec Arisawa

Legal name

PROTEC ARISAWA EUROPE, S.A.

Website

https://protec-arisawa.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

251–500 employees

Short description

Protec Arisawa is the global leader in designing and manufacturing Fiber Reinforced Plastic pressure vessels for membrane filtration systems, serving water treatment, desalination, and industrial composite customers across the Americas, EMEA, and APAC.

Ownership category

akta.pro rank

Product category

Industrial Pressure Vessels / Water Treatment Equipment

akta.pro primary industry

Water & Wastewater Treatment Plant Equipment (Clarifiers, Aeration, Membrane Systems) (IMAHAEAJ)

akta.pro secondary industry

Desalination Plant EPC, O&M & Performance Optimization (EUANAFAK)

Keywords

• FRP pressure vessels
• Membrane filtration systems
• Water treatment equipment
• Filament winding manufacturing
• Reverse osmosis vessels

Headquarters

HQ city

Vista

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. FRP Pressure Vessel Sales: Manufacturing and sale of Fiber Reinforced Plastic pressure vessels in various diameters (4, 8, 9, 11, 16 inch) and configurations (End-Ported, Side-Ported, Mega Side-Ported, Center Port). Vessels designed for continuous use housing membrane filtration elements for water purification.
2. Spare Parts & Components: Sale of replacement parts including seals, permeate ports, thrust cones, membrane adapters, shims, and FRP collectors. Maintains large inventory for immediate delivery to OEMs and end-users.
3. Custom Engineering Services: Custom engineered products for specific customer applications. Specialized design services to meet unique product and process requirements.
4. Field Service & Training: Field service team providing operator training, general maintenance guidelines, vessel inspection, cleaning, and parts replacement services.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels3 records

Core offering

Protec Arisawa designs and manufactures custom Fiber Reinforced Plastic (FRP) pressure vessels that house membrane filtration elements for reverse osmosis (RO), nanofiltration, ultrafiltration, and microfiltration systems. The vessels are produced in 4", 8", 9", 11", and 16" diameter configurations with End-Ported, Side-Ported, Mega Side-Ported, and Center Port options for water purification applications including brackish water and seawater desalination. The company also supplies spare parts, custom engineering services, and field service support.

Product overview

Protec Arisawa is the global leader in the design and manufacturing of Fiber Reinforced Plastic (FRP) Pressure Vessels for membrane filtration systems. The product portfolio consists of pressure vessels in five standard diameter sizes (4", 8", 9", 11", and 16") available in multiple port configurations (End-Ported, Side-Ported, and Mega Side-Ported), complemented by custom size vessels for specialized applications. The vessels accommodate spiral-wound membrane filtration elements from any manufacturer for water purification applications ranging from brackish water (150-600 PSI) to seawater desalination (up to 1800 PSI). Center Port technology offers energy-efficient feed water distribution with 35-40% energy savings. The company also provides a comprehensive spare parts program including FRP collectors and replacement components to ensure long-term system reliability.

Differentiator

Problem solved

Functional benefit

Products and services

• 4" Diameter Vessel FRP pressure vessels designed for housing membrane filtration elements, available in End-Ported and Side-Ported configurations. Designed for continuous use at pressures up to 1000 PSI for brackish water and up to 1800 PSI for seawater applications.
• 8" Diameter Vessel FRP pressure vessels with End-Ported, Side-Ported, and Mega Side-Ported configurations designed for continuous use as housing for membrane filtration elements at pressures up to 1200 PSI. Mega Side-Ported models provide over 50% more flow and reduce pressure-drop to decrease system operation costs.
• 9" Diameter Vessel FRP pressure vessels with traditional end-ported and side-ported designs for housing nine-inch nominal diameter spiral-wound membrane filtration elements at pressures up to 1200 PSI.
• 11" Diameter Vessel FRP pressure vessels with End-Ported, Side-Ported, and Mega-Ported MSP configurations designed for eleven-inch nominal diameter spiral-wound elements at pressures up to 1200 PSI.
• 16" Diameter Vessel Large-diameter FRP pressure vessels with End-Ported and Side-Ported configurations designed for sixteen-inch nominal diameter spiral-wound membrane filtration elements at pressures up to 1200 PSI.
• Custom Size Vessel Custom engineered FRP pressure vessels designed for specific customer applications and requirements beyond standard diameter offerings.
• Spare Parts (FRP Collector) Precision-crafted spare parts including FRP collectors, permeate ports, thrust cones, membrane adapters, shims, and seals for maintaining and extending vessel life.
• Custom Engineering Services Custom engineered products and specialized design services developed to meet unique product and process requirements for specific customer applications.
• Field Service & Training Field service team providing operator training, general maintenance guidelines, vessel inspection, cleaning, and parts replacement services for installed vessels.

Quantifiable outcome

• 35-40% energy savings with Center Port technology over conventional nanofiltration
• +5 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• TransCrescent WaterTreatment Equipment Trading LLCkey partnerChannel Partner/ Reseller/ DistributorTransCrescent WaterTreatment Equipment Trading LLC is a key partner for Protec Arisawa in the Middle East region. They co-exhibited at WETEX 2025 in Dubai, facilitating market presence and customer engagement in the Gulf region.

Scale indicators4 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Pentair (Codeline): Pentair's Codeline brand manufactures FRP pressure vessels for RO and nanofiltration systems, the same core product category as Protec Arisawa. Both companies supply OEM skid builders and end-users in municipal and industrial desalination.
• Wave Cyber: Wave Cyber is a global manufacturer of FRP pressure vessels for membrane filtration in water treatment and desalination, directly competing with Protec Arisawa across the 2.5-inch through 16-inch diameter range.
• Belco Industries: Belco manufactures composite pressure vessels and related equipment for industrial applications, including water treatment systems. It is a direct competitor to Protec Arisawa in FRP vessel supply for RO and NF membrane systems.
• Pure Aqua: Pure Aqua designs and supplies complete RO systems including pressure vessels and membrane housings for industrial and commercial water treatment, overlapping directly with Protec Arisawa's vessel offering and serving similar OEM and end-user customers.

Emerging players

• Tianjin MOTIMO: Tianjin MOTIMO is a Chinese manufacturer of FRP pressure vessels for reverse osmosis and ultrafiltration, offering cost-competitive vessels that increasingly compete with established Western suppliers including Protec Arisawa.

Broad incumbents

• Toray Industries: Toray is a global incumbent in reverse osmosis and nanofiltration membrane elements, including the ROMEMBRA product line. While Toray supplies membranes that go inside Protec Arisawa's vessels, the two compete for system-level specification in major desalination projects.
• DuPont Water Solutions (FilmTec): DuPont's FilmTec is a leading global supplier of RO and NF membrane elements used in desalination and industrial water treatment. Like Toray, DuPont specifies the membrane elements that Protec Arisawa vessels are designed to house, making it a system-level incumbent alongside the vessel suppliers.
• LG Chem: LG Chem is a major global producer of RO and nanofiltration membrane elements through its NanoH2O business, competing with Toray and DuPont. Its membranes are deployed in the same desalination systems where Protec Arisawa's pressure vessels are installed.
• Koch Membrane Systems: Koch Membrane Systems manufactures a broad portfolio of RO, NF, UF, and MF membranes used in water treatment and desalination. As a system-level incumbent, Koch competes for specification on the same projects where Protec Arisawa supplies pressure vessels.
• Sulzer: Sulzer is a global process equipment manufacturer serving water, wastewater, and desalination projects with pumps, separation equipment, and related engineered systems. It competes indirectly with Protec Arisawa at the system and EPC-contractor level.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/protecarisawa

Compliance11 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

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 Protec Arisawa