Petersen Products Co.

What Petersen Products Co. does

Petersen Products Co. is a privately held manufacturer, founded in 1916 and headquartered in Fredonia, Wisconsin, that designs and builds pipe plugs, pipeline testing equipment, and ancillary products for plumbing, municipal, industrial, and construction customers. The core product architecture is organized around inflatable and mechanical pipe plug technologies — including the proprietary PeteStop® inflatable line stop systems used to isolate pressurized pipelines during valve replacement, Multi-Flex® chemical-resistant inflatable plugs, DrainJet® hydraulic drain and sewer cleaning tools, hot tap machines, inflatable lifting bags, packers for pipe relining, and temperature/pressure test plugs — supported by a broad catalog of inflation accessories (pressure relief valves, gauges, vacuum generators, hoses). The company markets itself as a specialist in pipeline sealing, testing, and maintenance, holding ISO 9001:2015 certification and five registered trademarks across its proprietary product families.

The business model is direct-to-customer manufacturing and sales: standard catalog products are sold through an owned e-commerce storefront with publicly listed pricing, supplemented by phone and email order capture, while custom-engineered solutions for specialized size, temperature, pressure, and chemical resistance requirements are quote-based. Revenue is generated almost entirely from one-time product sales (with multi-year engagements possible on custom manufacturing contracts), targeting four primary customer segments — industrial pipeline operators, municipal utilities, professional plumbers/contractors, and construction firms — primarily within the United States. The company has no disclosed subsidiaries, no parent company, no outside investors, and no public listing, consistent with its status as a small (11-50 employees) family- or privately-owned niche manufacturer that has operated continuously from a single Wisconsin site for over a century.

Name

Petersen Products Co.

Legal name

Petersen Products Co. LLC

Website

https://petersenproducts.com

Company type

Private

Founded year

1916

Operating status

Operating

Headcount range

11–50 employees

Short description

Petersen Products Co. is a privately held Wisconsin manufacturer, founded in 1916, that designs and sells pipe plugs, pipeline testing equipment, and related accessories under proprietary brands (PeteStop®, Multi-Flex®, DrainJet®) to industrial, municipal, plumbing, and construction customers across the United States.

Ownership category

akta.pro rank

Headquarters

HQ city

Fredonia

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Product Sales: Petersen Products generates revenue through direct product sales of pipe plugs, pipeline testing equipment, and accessories via their e-commerce website and phone/email orders. Products range from standard mechanical pipe plugs to specialized inflatable line stop systems with pricing from under $100 for accessories to several thousand dollars for complete systems. The company also offers custom manufacturing services for specialized pipeline solutions.
2. Custom Manufacturing Services: The company provides custom manufacturing solutions for plumbing and industrial pipeline challenges, creating specialized products beyond their standard catalog offerings to meet specific size, temperature, pressure, and chemical resistance criteria.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

Petersen Products manufactures and supplies pipe plugs (inflatable and mechanical), pipeline line stop systems, drain and sewer cleaning tools, hot tap machines, pipeline testing equipment, and inflatable lifting bags for plumbing, municipal, construction, and industrial pipeline applications. The company sells standard catalog products through its e-commerce site and also offers custom manufacturing services for specialized size, temperature, pressure, and chemical resistance requirements.

Product overview

Petersen Products Co. is a manufacturer specializing in high-reliability pipe plugs and pipeline solutions serving plumbing, construction, municipal, and industrial applications since 1916. The product portfolio consists primarily of two core product lines: inflatable pipe plugs (including PeteStop® line stop systems and Multi-Flex® chemical resistant variants) and mechanical pipe plugs (divided into low pressure hand-tightening and high pressure bolt-tightening categories). These are complemented by ancillary product lines including DrainJet® drain flushers and sewer cleaning tools, hot tap machines and equipment, inflatable lifting bags, inflatable packers and carriers for pipe relining, temperature and pressure test plugs, pipeline test equipment (smoke testers, hydrostatic pumps, vacuum testers), annular seals, inflation accessories and fittings, duct balloons and grout bags, and contractor tools. The company also offers custom manufacturing services for product customization. The product architecture follows a series-based numbering system (e.g., 127 Series, 130 Series) with multiple variants within each series to address different pressure ratings, materials, sizes, and special features like bypass capability, remote placement, and chemical resistance.

Differentiator

Problem solved

Functional benefit

Products and services

• PeteStop® Inflatable Line Stop Pipe Plugs Inflatable pipe plugs engineered to block pressurized pipelines, available in high pressure (129 Series), medium pressure (128 Series), and high flow (129-8 Series) variants, used by industrial and municipal operators to isolate pipeline sections during valve replacement and maintenance.
• Multi-Flex® Chemical Resistant Pipe Plugs Chemical resistant inflatable pipe plugs including high expansion (113 Series), oil resistant (114/115 Series), heavy duty oil resistant (124/125 Series), rigid core bore hole (126 Series), and high pressure (127/127BB Series) variants for industrial pipelines requiring chemical and oil resistance.
• Rubber Molded Inflatable Pipe Plugs Rubber molded inflatable pipe plugs covering plumber test (130-0), stack test (130-1), municipal bypass (130-2), long test (130-3), leak detector (130-4), packer carrier (130-5), large bypass (130-6), remote placement (130-7), pillow style test ball (130-9), and aramid reinforced (136/137) variants for plumbing and contractor applications.
• Mechanical Low Pressure Pipe Plugs Hand-tightening mechanical pipe plugs including pipe protectors (140 Series), tapered redwood plugs (140-1), flush mounted plates (140-4/140-5), bypass plugs (141), wing nut test plugs (141-1/141-2), nylon plugs (142/143/144), test caps (142-9), monitor well plugs (142-8), and assorted test plug configurations (143-7/143-8/143-9/149) for plumbing and field use.
• Mechanical High Pressure Pipe Plugs Bolt-tightening high pressure mechanical pipe plugs including pipeline joint testers (145-8), high pressure test plugs (145-9), medium pressure bypass (146-9), very high pressure plugs (147-1), double block plugs (147-9), EZ-Swet line stoppers (148-0), remote expander plugs (148-3), flange weld test plugs (151), custom mechanical plugs (145-2), and through-the-valve mechanical plugs.
• DrainJet® Drain Flushers and Sewer Cleaning Tools Hydraulic drain and sewer cleaning equipment including Dr.Fixit® and Econo drain flushers (100-101 Series), DrainJet® professional hydraulic flushers (102-0/102-3), municipal sewer flushers (107 Series), and pipeline cleaning balls (109 Series) for municipal and contractor applications.
• Hot Tap Machines and Equipment Hot tap machines including mechanical hot tappers (261 Series), pneumatic hot tappers (262 Series), MiniTap hydraulic hot tappers, hot tap sleeves and saddles (910-4 Series), hole saws, completion plugs (150 Series), and associated component parts and kits for pipeline tie-ins under pressure.
• Inflatable Lifting Bags High-pressure inflatable lifting bags including flat form lift bags (161-0 Series), heavy-duty lift bags rated 145/161 PSI (161-5 Series), and pipe handlers (161-9 Series) with associated controllers, hoses, and accessories.
• Inflatable Packers and Relining Carriers Inflatable packers and carriers for pipe relining including Multi-Flex® point repair packers (118 Series), lateral T-packers (116 Series), bypass packers (119 Series), and well packers (126 Series) in various materials including natural rubber.
• Temperature and Pressure Test Plugs (Pete's Plug) Temperature and pressure measurement test plugs including Pete's Plug T&P plugs (310/311 Series) with associated thermometers, gauge probe adapters, and compound pressure gauges for pipeline monitoring.
• Pipeline Test Equipment Testing equipment for pipelines including smoke test equipment (938-95), manhole vacuum test equipment (938-7), hydrostatic test pumps (938-9/938-93), leak detector pressure testing (924-1304), pipeline deflection gauges (938-96), and pipeline joint testers (145-8) used by contractors and municipalities.
• Multi-Flex® Annular Seals Inflatable annular seals including Multi-Flex® inflatable annular seals (111 Series) used to seal annular spaces between carrier pipes and casings in pipeline applications.
• Duct Balloons, Grout Bags, and Custom Bladders Inflatable products for duct sealing and grouting including inflatable duct plugs, duct balloons, inflatable grout packers, tunnel seals, and custom bladder products for specialized applications.
• Tools for Contractors Tools for contractors including manhole tools (winches, jacks, hooks), StrapFab tools, pumps, and accessories used in field pipeline and manhole operations.
• Custom Manufacturing Solutions Custom manufacturing services for developing specialized pipe plugs and pipeline solutions tailored to specific size, temperature, pressure, and chemical resistance requirements that standard catalog products do not address.

Quantifiable outcome

• Reduced downtime through effective pipeline pressure management
• +1 more outcomes

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Cherne Industries (an Oatey company): Cherne is one of the most direct competitors to Petersen Products, manufacturing mechanical and inflatable pipe plugs, test balls, and pipeline testing accessories. As part of Oatey, Cherne has a larger catalog, broader distribution, and greater B2B reach into the same plumbing and municipal channels Petersen serves.
• T.D. Williamson: T.D. Williamson is a global leader in pipeline isolation, hot tapping, and line stopping technologies—directly competing with Petersen's PeteStop® line stop systems and Hot Tap product lines serving oil & gas, petrochemical, and industrial pipeline operators.
• Hydra-Stop: Hydra-Stop specializes in line stop and valve insertion equipment for pressurized pipelines, directly overlapping with Petersen's PeteStop® systems. It targets municipal water and industrial customers with similar insertion-system kits and inflatable plugging technology.
• Knapp Polly-Pig: Knapp Polly-Pig manufactures pipeline cleaning pigs and pipeline maintenance tools, comparable to Petersen's DrainJet® flushers and pipeline cleaning balls. Both serve municipal and industrial pipeline cleaning and maintenance end users.
• Goodway Technologies: Goodway Technologies manufactures pipe and tube cleaning systems, drain flushers, and HVAC maintenance equipment, overlapping with Petersen's DrainJet® flushers and contractor tool categories. Both sell into plumbing, HVAC, and industrial maintenance channels.
• Sewer Equipment Co. of America: Sewer Equipment manufactures municipal sewer cleaning and pipeline maintenance equipment, directly comparable to Petersen's municipal sewer flushers (107 Series) and pipeline cleaning balls. It serves overlapping municipal utility and contractor customers.

Broad incumbents

• Team Industrial Services (BrandSafway): Team Industrial Services, now part of BrandSafway, offers pipeline maintenance, hot tapping, leak sealing, and line stopping services using equipment comparable to Petersen's catalog. It is a broader incumbent with global field-service operations spanning oil & gas, power, and industrial markets.
• Garlock (EnPro Industries): Garlock, part of EnPro Industries, is a major manufacturer of gaskets, sealing devices, and fluid handling products. Its sealing product portfolio is conceptually adjacent to Petersen's pipe plug and annular seal offerings, though Garlock operates at much greater scale across broader industrial markets.

Emerging players

• Flow-Liner: Flow-Liner provides cured-in-place pipe (CIPP) lateral lining and pipe rehabilitation products, including inflatable packers comparable to Petersen's Multi-Flex® point repair packers and lateral T-packers. It is a niche player in pipe relining where Petersen competes.

Regional players

• Avanti International: Avanti International is a manufacturer of chemical grouts and sealants used in municipal sewer and pipeline rehabilitation, alongside related inflatable grout packers. Its grout packers and duct balloons are conceptually comparable to parts of Petersen's relining and duct sealing product lines.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/PetersenPlugs
• Facebookfacebook.com/pipeplug
• LinkedInlinkedin.com/company/petersen-products

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Petersen Products Co.