Hydromax Incorporated Limited

What Hydromax Incorporated Limited does

Hydromax Incorporated Limited is a privately held UK-based (Glamis, Forfar, Scotland) engineering company founded in 2003 that designs, manufactures and licenses siphonic roof drainage systems under the HydroMax® brand. Its core technology exploits naturally induced negative pressure (vacuum) to drain large flat roofs through smaller-diameter, flat-run, self-cleaning pipes — eliminating the sloping-pipe geometry, deep trenching and oversized downpipes required by conventional gravity drainage. The hardware range covers metric drains (50mm, 75mm, 125mm) for international markets and an MH-series cast-iron and stainless-steel line (2"–6") for North America, supported by the HydroTechnic™ hydraulic calculation program and a Revit API plug-in that auto-sizes pipe networks to BS 8490 and ASPE/ANSI 45.

The company monetizes through quote-based, project-specific hardware sales and licensing of its BIM-integrated design software to licensed partners and design engineers. Its go-to-market is a partner/distributor model: MIFAB, Inc. is the exclusive North American manufacturer-distributor, with regional partners covering Korea (HARIMSDS), Vietnam (Hites), Central America (Bioproyectos) and India (Sangir Plastics). Sales are specification-driven through engineering firms, architects, MEP consultants and mechanical contractors, with documented flagship projects including Tottenham Hotspur Stadium (62,850 capacity), Amazon fulfillment centers, USCIS Texas Service Center, Nakheel Mall Dubai, Amkor Technology's Vietnam semiconductor plant, and named industrial references at Tesla, Boeing, NASA, Walmart, FedEx, Mercedes-Benz, BMW and Peloton. Reported project outcomes include $1.7M developer savings (Amazon), $201K–$235K savings versus gravity systems (USCIS) and 23% combined material and labor savings (Viega), positioning siphonic drainage as both a cost and LEED-credits value lever for large commercial, industrial, government and sports infrastructure.

Name

Hydromax Incorporated Limited

Legal name

Hydromax Incorporated Limited

Website

https://hydromax.com

Company type

Private

Founded year

2003

Operating status

Operating

Headcount range

1–10 employees

Short description

Hydromax Incorporated Limited is a UK-founded, privately held engineering firm that designs and licenses siphonic roof drainage systems, selling proprietary drains and BIM-integrated HydroTechnic™ sizing software to engineering firms, architects and contractors serving commercial, industrial, government and large-venue construction projects worldwide.

Ownership category

akta.pro rank

Product category

Siphonic Roof Drainage Systems

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (23822), Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Roof Drainage Components (Scuppers, Roof Drains) Cleaning & Maintenance (HSAIAKAK)

akta.pro secondary industry

Gutters, Downspouts & Drainage (Install/Repair) (HSAPAKAG)

Keywords

• Siphonic roof drainage
• Roof drain systems
• Storm water drainage
• Rainwater management solutions
• Building drainage products

Headquarters

HQ city

Glamis, Forfar

HQ country

United Kingdom

HQ region

Europe

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Siphonic Roof Drain Products: Sale of proprietary siphonic roof drainage products including drains, accessories, and piping systems manufactured from cast iron, ductile iron, and stainless steel

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

HydroMax designs, manufactures, and distributes proprietary siphonic (negative-pressure vacuum) roof drainage systems for large commercial, industrial, and government buildings. Its product line includes metric-sized siphonic roof and gutter drains (50mm, 75mm, 125mm) and the MIFAB-manufactured MH series cast iron and stainless steel drains for the North American market, complemented by the HydroTechnic hydraulic calculation software and Revit API plug-in used by engineers to design compliant siphonic drainage systems.

Product overview

HydroMax® offers a comprehensive range of siphonic roof drainage solutions using naturally induced negative pressure vacuum technology. The product portfolio includes metric drains (50mm, 75mm, 125mm) for international markets and USA-specific Mifab HydroMax® drains (MH series in 2", 3", 4", 5", 6" sizes) for the North American market. Supporting the hardware products is the HydroTechnic™ hydraulic calculation software with a Revit API plug-in for BIM-integrated design. The system enables efficient drainage using smaller diameter pipes, flat horizontal routing without slope, and reduced material and labor costs compared to conventional gravity drainage systems.

Differentiator

Problem solved

Functional benefit

Brands

• HydroTechnic™: Advanced analytical design calculation program for Revit that auto-calculates diameters for storm drainage piping systems using HydroMax siphonic roof drains.

Products and services

• 75mm Siphonic Roof and Gutter Drains Best-selling HydroMax 75mm siphonic roof and gutter drain manufactured in a range of quality materials for compatibility with all types of roofing and gutter materials, with high capacity up to 25 l/s while remaining compact for narrow gutter installation. Designed for engineers and contractors specifying roof drainage on commercial, industrial, and stadium projects.
• 125mm Siphonic Roof and Gutter Drains HydroMax 125mm siphonic roof and gutter drain providing capacity up to 100 l/s for larger roofs or higher rainfall rates. Includes primary and secondary overflow drains and is manufactured in a range of quality materials for compatibility with all roofing and gutter materials. Aimed at large commercial and industrial construction projects.
• 50mm Siphonic Roof and Gutter Drains Compact HydroMax 50mm siphonic roof and gutter drain manufactured in high quality stainless steel for an aesthetically pleasing finish, with flow rates up to 12 l/s. Targeted at terrace and architectural projects where discreet drainage is required.
• 50mm Balcony Drain Compact HydroMax 50mm balcony drain with built-in anti-backflow device, capable of up to 1.4 l/s flow with a 50mm horizontal pipe. Intended for balcony drainage applications on residential and commercial buildings.
• 75mm Drain for Small Gutter High quality stainless steel HydroMax 75mm drain with stainless steel inducer, with a maximum capacity of 21 l/s for smaller width gutters. Aimed at commercial buildings with constrained gutter dimensions.
• MH-300, 400, 600 Siphonic Primary Roof Drain (USA) Lacquered cast iron siphonic primary roof drain manufactured by MIFAB for the USA, Canada, and Mexico markets, with wide anchor flange, cast iron waterproofing membrane clamp ring, ductile iron air baffle/inducer, and Type 304 stainless steel allen key hardware. Available in 3", 4", and 6" sizes with flow rates from 23 to 1800 GPM. Used by engineers and contractors on large North American commercial and industrial projects.
• MH-301, 401, 601 Siphonic Overflow Roof Drain (USA) Lacquered cast iron siphonic overflow roof drain with integral 2" water dam and ductile iron air baffle/inducer, manufactured by MIFAB for North America. Available in 3", 4", and 6" sizes with flow rates from 23 to 1890 GPM. Specified for overflow/secondary drainage on commercial buildings.
• MH-205-G and MH-305-G Gutter Roof Drain (USA) MIFAB/HydroMax gutter roof drain with wide anchor flange and stainless steel air baffle/inducer with Type 304 stainless steel allen key hardware, available in 2" (MH-205-G) and 3" (MH-305-G) outlet sizes. Designed for gutter installation on North American buildings.
• MH-500-28 Siphonic Gutter Roof Drain (USA) 5" (125mm) HydroMax MH-500-28 siphonic gutter roof drain with wide anchor flange, ductile iron air baffle/inducer, and Type 304 stainless steel hardware. Resistance value K of 0.04 and flow rates from 120 to 1300 GPM. Used for gutter drainage on large North American facilities.
• MH-501-28 Siphonic Gutter Overflow (USA) Stainless steel HydroMax MH-501-28 siphonic gutter overflow drain with small anchor flange for gutter installation, ductile iron air baffle/inducer, and 5" (125mm) pipe size with flow rates from 120 to 1300 GPM. Provides overflow/secondary gutter drainage on North American projects.
• MH-200 Siphonic Terrace Roof Drain (USA) Type 304 stainless steel HydroMax MH-200 siphonic terrace roof drain with 2" no hub outlet connection, anchor flange, waterproofing membrane clamp ring, and air baffle/inducer. Flow rates from 23 to 190.5 GPM. Used on North American terrace applications.
• HydroTechnic Hydraulic Calculation Program with Revit API Plug-in Advanced analytical design calculation program for siphonic roof drainage systems, including a Revit API plug-in that auto-calculates pipe diameters for storm drainage piping. Hydraulic calculations comply with British Standard BS 8490 and ASPE/ANSI 45 Siphonic Roof Drainage Design and Engineering Standard. Drawings can be updated automatically with calculated diameters throughout the piping network. Made available to licensed partners and USA/Canada design engineers via registration.

Quantifiable outcome

• $1.7 million savings on Amazon Fulfillment Center project
• +4 more outcomes

Named customers16 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

Feature3 records

Partnerships

Five partnerships are on record, tiered core and regional.

• MIFAB, Inc.coreOEM/ Whitelabel/ Licensing PartnerMIFAB is the exclusive manufacturing partner for HydroMax siphonic roof drainage products in USA, Canada, and Mexico. MIFAB manufactures the HydroMax drain line including MH-300, 400, 600 series drains from cast iron with ductile iron inducers.
• HARIMSDS CO., LTD.coreChannel Partner/ Reseller/ DistributorHydroMax Korea exclusive partner handling distribution and sales in Republic of Korea. Contact: Mr. Woonil Oh, Overseas Team Director.
• Hites (Vietnam)coreChannel Partner/ Reseller/ DistributorHydroMax Vietnam exclusive partner. Contact: Nguyen Tu Dinh. Located at Ecolife Capitol Building, Hanoi.
• Bioproyectos de Ingeniería, S.A.regionalChannel Partner/ Reseller/ DistributorHydroMax Central America partner based in Guatemala City. Contact: Peter Meng.
• Sangir Plastics Pvt LtdregionalChannel Partner/ Reseller/ DistributorHydroMax India partner based in Mumbai. Contacts: Yogita Chandak (Business Head) and Yash Mandhana (Sales).

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• ACO Group: ACO is a German-headquartered specialist in surface drainage, roof drainage, and building services drainage with global subsidiaries and a siphonic roof drainage product line. It directly competes with HydroMax in commercial and industrial roof drainage applications across multiple regions.
• Wavin (Orbia): Wavin, part of Orbia, is one of the world's largest plastic pipe systems manufacturers and offers QuickStream siphonic roof drainage systems. It is a direct competitor to HydroMax in the engineered siphonic roof drainage category, serving the same engineering and contractor specification base with a much broader product portfolio.
• Fullflow Group: Fullflow is a UK-based specialist in siphonic roof drainage, comparable to HydroMax in scale and product focus. Both companies are headquartered in the UK and serve the same engineering specification channel for non-residential roof drainage projects.
• HL Hutterer & Lechner: HL is an Austrian drainage manufacturer offering siphonic roof drainage systems alongside a broader floor and roof drain portfolio. It directly competes with HydroMax in commercial roof drainage specifications across European and international projects.
• Sita Bauelemente: Sita Bauelemente is a German manufacturer specializing in roof drainage and roof-related building components, including siphonic systems. It competes with HydroMax in the European market and overlaps on the same commercial roof drainage specification use cases.
• MIFAB, Inc. MIFAB is HydroMax's exclusive USA/Canada/Mexico manufacturing and distribution partner and a US manufacturer of commercial plumbing and drainage products. It is comparable as a competing supplier of commercial drainage hardware, including roof and area drains, into the same North American specification channel.
• Valsir: Valsir is an Italian manufacturer of plumbing and drainage systems, including siphonic roof drainage products. It is comparable to HydroMax in offering engineered siphonic systems to commercial construction projects, primarily across European and emerging markets.

Broad incumbents

• Geberit: Geberit is a Swiss-listed manufacturer of sanitary and plumbing systems with global reach, offering siphonic roof drainage as part of its roof drainage portfolio. It is comparable to HydroMax as a siphonic roof drainage supplier, but operates at far greater scale and across many additional product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/hydromax-inc-ltd-

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries5 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 Hydromax Incorporated Limited