What Underhill does

Underhill International Corporation is a privately held specialty manufacturer of turf irrigation and water-management products, headquartered in Irvine, California, and operating for over 40 years since founding in 1982. The company designs, manufactures, and distributes a broad catalog of hardware including two-wire irrigation control systems (Novo 2Wire Converter, Sapien 2Wire Controller, Hunter ICC/ICC2 decoder modules), sprinkler nozzles (Magnum Stinger, Profile Nozzles engineered for Rain Bird and Toro sprinklers), irrigation hoses (Featherweight, ProLine), water-removal hand pumps (Gulp Pro, battery-operated PowerGulp), wetting agents and injection systems (H2O Maximizer, Tournament-Ready, Medalist, Hydro-Wet, Salt Buster, Flo-Pro), and turf maintenance and marking tools (Level Lawn, Grund Guide, TurfSpy). Technical differentiators include MudGuard anti-clog filtration on the PowerGulp pump, all-pressure nozzle design for low-pressure environments, and cross-vendor battery-plate compatibility with Milwaukee, DeWalt, Makita, and Bosch 18-20V platforms.

The company serves four end markets: golf courses, sports fields, professional contractors, and do-it-yourself/residential consumers, with golf, sports fields, and contractors identified as primary verticals. Go-to-market is a hybrid sales-led motion combining regional sales representatives for B2B accounts, direct-to-consumer e-commerce via the Underhill Online Store (underhillonline.net), and industry trade shows. Distribution is North America-focused, and the company maintains brand presence across Instagram, Facebook, X, and YouTube. Underhill monetizes almost entirely through hardware product sales; pricing is not publicly disclosed and is set via sales representatives or the online store.

The business is privately held, has no disclosed funding history, no parent company, no subsidiaries, and no management team information in the available data. The legal entity is Underhill International Corporation, domiciled in California, USA, with a headcount in the 11-50 range per firmographic data. There are no public signals of M&A, leadership change, or restructuring activity.

Name

Underhill

Legal name

Underhill International Corporation

Website

https://underhill.us

Company type

Private

Founded year

1982

Operating status

Operating

Headcount range

11–50 employees

Short description

Underhill International Corporation is a privately held Irvine, California manufacturer of turf irrigation and water-management products, serving golf courses, sports fields, professional contractors, and DIY consumers through sales reps, trade shows, and direct e-commerce.

Ownership category

akta.pro rank

Product category

Irrigation Equipment

NAICS

Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing (333112), Lawn and Garden Equipment and Supplies Retailers (4442), Support Activities for Crop Production (11511)

SIC

Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070), Farm Machinery & Equipment (3523)

akta.pro primary industry

Irrigation & Outdoor Plumbing Products (IMADALAI)

akta.pro secondary industries

Irrigation Systems Installation & Maintenance (IMAIAIAC), Pump, Well & Booster System Service for Irrigation (HSAIAEAI), Irrigation Repair & Troubleshooting (Leaks, Valves, Heads) (HSAIAEAC)

Keywords

• Golf irrigation equipment
• Turf maintenance products
• Water removal pumps
• Sprinkler nozzles
• Wetting agents

Headquarters

HQ city

Irvine

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Product Sales: Underhill generates revenue through the sale of physical irrigation and turf maintenance equipment including hoses, nozzles, pumps, sprinklers, tools, and wetting agents. Products are sold through direct online sales and a network of sales representatives.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Underhill manufactures and distributes water-saving irrigation and turf maintenance products for golf courses, sports fields, professional contractors, and residential customers. The product portfolio includes hoses, sprinkler nozzles, water removal pumps, 2Wire irrigation control systems, wetting agents, turf maintenance tools, and portable irrigation systems. Products are sold through an online store, regional sales representatives, and trade shows.

Product overview

Underhill is a turf irrigation solutions company headquartered in Irvine, California, with over 40 years of industry experience. The company offers a comprehensive portfolio of irrigation and turf maintenance products organized across several product lines: (1) Watering Accessories including hoses (Featherweight, ProLine, ShortyPro), nozzles (Magnum Stinger, Profile Nozzles for Rain Bird/Toro systems), hand pumps (PowerGulp, Gulp Pro), water management tools (AuditMaster/CatchCan, DeepDrip, Tracker Portable Irrigation, Flo-Pro Injection System); (2) 2Wire Irrigation Control Systems for golf and commercial irrigation; (3) Wetting Agents and Specialty Products (H2O Maximizer, Tournament-Ready, Medalist, Hydro-Wet, Salt Buster); (4) Turf Maintenance and Repair Tools including leveling equipment, aerators, and soil samplers; (5) Golf Course Marking Systems (Grund Guide). The products serve four market segments: Golf, Sports Fields, Professional Contractors, and Do-it-Yourself consumers.

Differentiator

Problem solved

Functional benefit

Brands

• Grund: Grund Guide Marking System product line including Sprinkler Head Yardage Markers, Fairway/Tee/Range Disc Markers, and Valve Box/Universal Markers.
• ProLine
• PowerGulp
• Profile

Products and services

• PowerGulp Battery-operated professional water removal pump for turf irrigation applications, featuring MudGuard filtration, interchangeable battery plates for Milwaukee, DeWalt, Makita, and Bosch batteries, 11 GPM flow rate, and up to 60 minutes runtime.
• Featherweight Hoses Lightweight irrigation hoses designed to glide across turf without scuffing, featuring high flow rates comparable to PVC hoses with added durability.
• PowerFlow Hose-Splitter Quality hose splitter with thumb valve design offering full flow rates, brass levers, and durable construction for long-term use.
• Magnum Stinger Nozzle All-pressure nozzle designed for low pressure or low flow rate situations, featuring all-metal construction for high performance and ergonomic design for comfortable hand grip.
• 2Wire Products Two-wire irrigation control products including the Novo 2Wire Converter, Sapien 2Wire Controller, Hunter ICC Decoder Module, ICC2 Decoder Module, and related troubleshooting tools for golf and commercial irrigation systems.
• Profile Nozzles Precision sprinkler nozzles for Rain Bird and Toro irrigation systems, available in various colors and patterns for golf course and sports field applications.
• Wetting Agents Wetting agents including H2O Maximizer (pellets and liquid), Tournament-Ready, Tournament-Ready Plus with Actosol, Medalist Spray + Injectable, Hydro-Wet Injectable, Salt Buster Pellets, and Wet-Pell Tournament-Ready products for improved water penetration in turf.
• AuditMaster Irrigation water auditing system including CatchCan Ultra irrigation watering auditing cups for measuring and optimizing water distribution.
• Tracker Portable Irrigation Portable irrigation system for sports fields, cemeteries, campuses, and golf courses enabling flexible water distribution across various terrain.
• Gulp Hand Pumps Professional water removal pumps including Gulp Pro Premium Water Removal Pumps and PowerGulp battery-operated models for removing water from bunkers and irrigation repairs.
• Turf Maintenance Tools Turf maintenance equipment including leveling tools (Level Lawn series), turf repair tools (3 Tine Aerator, Round Plungers, Turf Doctor), and soil testing tools (Easy Reach Soil Sampler, Handy Compact Soil Sampler, Soil Probe, Soil Profiler).
• DeepDrip Deep root watering system for professional contractors enabling targeted irrigation beneath the root zone.
• ProLine Hose Series Commercial hose product line including ProLine Light Duty Hose, ProLine Flex Commercial Fabric Hose, ProLine Rubber Hose, and ShortyPro compact hose.
• Grund Guide Marking System Marking system for golf courses including sprinkler head yardage markers, fairway/tee/range disc markers, and valve box/universal markers.
• Flo-Pro Injection System Injectable wetting agent delivery system for golf and sports field applications including Flo-Pro Inline Applicator and injection accessories.
• TurfSpy Turf diagnostic tool for identifying turf conditions including broken sprinklers, disease (brown patch, yellow patch, fusarium, anthracnose, pythium blight), mowing quality issues, and irrigation problems.

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Seven partnerships are on record, tiered core.

• Milwaukee ToolcoreTechnology or IntegrationPowerGulp battery-operated pump features interchangeable battery adapter plates compatible with Milwaukee 18-20V slide-style batteries, allowing users to utilize their existing Milwaukee battery platforms.
• DeWaltcoreTechnology or IntegrationPowerGulp battery-operated pump features interchangeable battery adapter plates compatible with DeWalt 18-20V slide-style batteries, allowing users to utilize their existing DeWalt battery platforms.
• MakitacoreTechnology or IntegrationPowerGulp battery-operated pump features interchangeable battery adapter plates compatible with Makita 18-20V slide-style batteries, allowing users to utilize their existing Makita battery platforms.
• BoschcoreTechnology or IntegrationPowerGulp battery-operated pump features interchangeable battery adapter plates compatible with Bosch 18-20V slide-style batteries, allowing users to utilize their existing Bosch battery platforms.
• Hunter IndustriescoreTechnology or IntegrationUnderhill provides 2Wire Decoder Modules specifically designed for Hunter ICC and ICC2 controllers, enabling compatibility between Underhill's 2Wire systems and Hunter irrigation controllers.
• Toro CompanycoreTechnology or IntegrationUnderhill's Profile Nozzles product line includes specialized nozzles specifically designed for Toro sprinklers including T670, T690, T730, T750, T760, T780, T830, T835, and T855 series.
• Rain BirdcoreTechnology or IntegrationUnderhill's Profile Nozzles product line includes specialized nozzles specifically designed for Rain Bird sprinklers including R4151, R700, R900, and R91 series.

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Direct peers

• Weathermatic: Weathermatic produces smart irrigation controllers, weather-based water management, and commercial irrigation products. It overlaps with Underhill in commercial irrigation controls and water-management tooling.
• Rain Bird: Rain Bird is one of the largest irrigation equipment manufacturers globally, with a strong presence in golf, sports, and commercial irrigation. Underhill's Profile Nozzles are designed as precision aftermarket upgrades for Rain Bird sprinklers, putting the two in direct product-level competition.
• Toro Company: Toro manufactures irrigation systems, turf maintenance equipment, and specialty products serving golf, sports fields, and professional contractors. Underhill's Profile Nozzle line includes dedicated nozzles for Toro sprinkler series, putting the two in direct competition across the same end-customer base.
• K-Rain Manufacturing: K-Rain is a manufacturer of sprinklers, valves, controllers, and accessories for residential, commercial, and golf irrigation. As a focused mid-sized irrigation OEM with similar distribution channels, it is a directly comparable peer to Underhill.
• Hunter Industries: Hunter Industries is a leading manufacturer of irrigation controllers, rotors, and valves for golf, commercial, and residential markets. Underhill's 2Wire decoder modules are explicitly built to integrate with Hunter ICC and ICC2 controllers, making them a direct channel partner and closest functional peer.

Emerging players

• Irrometer Company: Irrometer manufactures soil moisture sensing and irrigation scheduling tools used in turf, agriculture, and landscape. It is an emerging specialist peer that overlaps with Underhill's water-management and AuditMaster auditing offerings.

Broad incumbents

• Lindsay Corporation: Lindsay, through its irrigation segment (formerly IrriGreen and Zimmatic), is a broad incumbent in agricultural and turf irrigation systems. It operates at much larger scale than Underhill but overlaps on mechanized and smart irrigation for turf and landscape end markets.
• Jain Irrigation Systems: Jain Irrigation is a large global manufacturer of irrigation systems, pipes, and water-management products. While primarily focused on agriculture, its turf and landscape irrigation lines place it as a broad incumbent comparable to Underhill's product breadth.
• NDS (NDS Inc.): NDS manufactures drainage, irrigation, and water management products for residential and commercial landscape applications. It is a broader incumbent with overlapping outdoor water-management product lines.

Regional players

• Ewing Irrigation & Landscape Supply: Ewing is a large regional distributor of irrigation and landscape supplies across the western and southern United States. It overlaps with Underhill as a downstream channel for golf and contractor buyers, though it is a distributor rather than a manufacturer.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/i/flow/login?redirect_after_login=%2Funderhillcorp
• YouTubeyoutube.com/channel/UC61r6UPwLUCZVaDgns-9W4w
• Facebookfacebook.com/underhillinternationalcorporation
• Instagraminstagram.com/underhillinternational
• LinkedInlinkedin.com/company/underhill-international-corporation

Revenue estimate

Valuation estimate

Number of profiles

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 Underhill