What Metraflex does

The Metraflex Company is a privately held Chicago-based manufacturer of engineered piping specialty products for the commercial HVAC industry, in continuous operation since 1958. The company's portfolio centers on expansion joints (metal, rubber, and the proprietary Metraloop U-bend loop) plus complementary fluid-handling components including flexible metal hose, pump connectors (VaneFlex, Suction Diffuser Flex), strainers (LPD and LPD-Mag magnetic variants), check valves, compensators, air release valves, pipe guides, anchors, and wall penetration seals. Manufacturing is performed at the West Town Chicago headquarters, supported by certified engineering work using CAEPipe finite element analysis for stress, movement, and anchor-load calculations on complex piping layouts, delivered as a paid delegated design service.

Products are specified primarily by consulting engineers and mechanical contractors, then procured through a global network of manufacturers' representatives covering all 50 US states and approximately 18 international markets across the Americas, the Middle East, and Asia-Pacific; the firm also runs an OEM Division for custom engineered solutions. Pricing is quote-based through the rep channel, with no public list pricing. Revenue is generated almost entirely from hardware sales into commercial HVAC projects, with additional exposure to fire protection (UL/FM-listed Fireloop and Seismic BreakAway Hanger), data center cooling, VRF systems (700 PSI), lead-free potable water (NSF/ANSI 61 & 372), and OEM integration.

Strategic positioning leans on proprietary design (Metraloop, Cablesphere, Fireloop, VFD Check Valve), extensive third-party certifications (UL, FM, UPC, IAPMO, CSA, ASME Section VIII, EJMA, FCI), and a content-heavy marketing stack of BIM/Revit models, energy savings calculators, case studies, and trade show participation. The company is independently owned with no disclosed parent, no institutional private equity backing, and recurring small exempt-offering filings suggesting closely held equity; ongoing product launches (LPD-Mag in 2020, VFD Check Valve in 2023) and vertical pushes into data centers and Latin America indicate measured incremental expansion rather than disruptive scaling.

Name

Metraflex

Legal name

The Metraflex Company

Website

https://metraflex.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

51–100 employees

Short description

Metraflex manufactures engineered piping specialty products—expansion joints, flexible metal hose, pump connectors, strainers, and valves—for the commercial HVAC, fire protection, and data center industries, sold through a global manufacturers' representative network since 1958.

Ownership category

akta.pro rank

Product category

Engineered Piping Components for Commercial HVAC

NAICS

Fabricated Pipe and Pipe Fitting Manufacturing (332996), Other Metal Valve and Pipe Fitting Manufacturing (332919), Industrial Valve Manufacturing (332911)

akta.pro primary industry

Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)

akta.pro secondary industries

Expansion Joints, Flexible Connectors & Compensators (Rubber/Fabric) (IMANALAF), Pipe Fittings, Couplings & Connectors (IMADALAD), Pipes & Tubing (Metal, Plastic & Composite) (IMADALAC)

Keywords

• Expansion joints
• HVAC piping components
• Pump connectors
• Flexible metal hose
• Vibration isolation products

Headquarters

HQ city

Chicago

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Piping Specialty Products Manufacturing and Sales: Metraflex manufactures and sells engineered piping products including expansion joints, flexible metal hose, pump connectors, strainers, valves, and related components to the commercial HVAC industry. Products are sold through an established network of manufacturers' representatives and directly to engineers and contractors. The company also offers custom OEM solutions and delegated design services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Metraflex manufactures and sells engineered piping specialty products for the commercial HVAC industry. The product line centers on metal and rubber expansion joints, the proprietary Metraloop flexible expansion loop, flexible metal hose, pump connectors, strainers, valves, pipe guides, anchors, and wall penetration seals. Products address vibration isolation, thermal expansion and contraction, seismic movement, and noise in building and process piping systems, distributed through a US and international manufacturers' representative network.

Product overview

The Metraflex Company is a manufacturer of engineered piping specialty products for the commercial HVAC industry, operating since 1958. The product portfolio centers on expansion joints and connectors for vibration isolation, thermal expansion/contraction, seismic movement, and pipe alignment. Core product lines include Metal Expansion Joints (Metragator, MNLC, MetraPak, Seismic Gator), Rubber Expansion Joints (Metrasphere, Cablesphere, Doublesphere, Mightysphere), and the proprietary Metraloop® flexible expansion loop. Supporting products include Energy-Saving Pump Connectors (VaneFlex, Suction Diffuser Flex), Flexible Metal Hose in stainless steel and bronze, Flexible Couplings, Valves (VFD Check Valve, Silent Check Valves, Butterfly Valves), Compensators, Strainers (including the energy-efficient LPD and LPD-Mag magnetic variants), Air Release Valves (MetraVent), Pipe Guides and Anchors, Wall Penetration Seals (MetraSeal), and Fittings. The company also offers Delegated Design Services using CAEPipe® finite element analysis software for complex piping system analysis. Specialized product lines address VRF systems (700 PSI rated), fire protection (UL/FM approved Fireloop® and Seismic BreakAway Hanger), and lead-free potable water applications.

Differentiator

Problem solved

Functional benefit

Brands

• Metraflex: Primary company brand for piping specialty products including expansion joints, pump connectors, strainers, and valves.
• Metraloop
• Fireloop
• Cablesphere

Products and services

• Metal Expansion Joints Expansion joints designed for thermal expansion, seismic movement, and vibration isolation in piping systems. Includes externally pressurized (Metragator) and bellows-type (MNLC, MC, MPTR) designs, plus specialized models for exhaust and seismic applications. Manufacturable with ASME Section VIII stamp for high-pressure uses including naval/shipboard applications.
• Rubber Expansion Joints Flexible rubber connectors providing vibration isolation, noise dampening, and movement accommodation. Available in EPDM, Neoprene, Nitrile, and Butyl compounds with options including control cables, full vacuum rating, and high-temperature/high-pressure configurations.
• Metraloop Expansion Loop Proprietary flexible expansion loop with U-bend geometry that absorbs thermal growth and seismic movement in all X, Y, and Z directions while developing minimal anchor loads. Available in stock sizes up to 12 inches and custom models up to 84 inches, with UL, FM, UPC, IAPMO, and CSA listed variants for VRF systems, gas service, and DWV applications.
• Seismic BreakAway Hanger Engineered release mechanism for Fireloop and seismic expansion joints. Supports seismic devices during normal service and releases at a preset load during seismic events, allowing full-rated movement. The ball-plunger design can be reset after activation.
• Energy-Saving Pump Connectors (VaneFlex and Suction Diffuser Flex) VaneFlex uses hydrodynamic shaped vanes to reduce discharge turbulence, equaling 5-10 pipe diameters of turbulence reduction with less pressure drop. Suction Diffuser Flex provides flow conditioning that maximizes pump operating life, increases pump efficiency, and improves suction pressure (validated 25% increase at a cyclotron facility).
• VRF Expansion Joints Expansion joints specifically designed for Variable Refrigerant Flow (VRF) systems operating at 700 PSI and 250-300°F. Includes VRF Metraloop, VRF V-Loop, VRF Dog-Leg, and VRF Flex vibration absorber configurations with stainless steel construction and Metraflex's exclusive copper-to-stainless-steel conversion fitting.
• Flexible Metal Hose Flexible hose and pump connectors for vibration isolation, thermal expansion, and misalignment. Available in stainless steel and bronze constructions with flanged, threaded, weld, grooved, and sweat end fittings; includes sanitary tri-clamp, gas service, and refrigeration absorber models up to 14 inches.
• Flexible Couplings Clamp-style couplings (Metra 201 and Metra 101) for quick disconnects in low-pressure piping applications without welding or flanges, with temperature ratings up to 225°F.
• Valves (including VFD Check Valve) Check valves including the VFD-optimized VFD Check Valve, plus globe style, wafer style, split-disc, bronze, FM-approved, foot, and butterfly valves. Sizes range from 2 to 42 inches across various pressure class ratings. The VFD Check Valve re-engineers hydrodynamics for variable frequency drive systems.
• Compensators (HP and HPQ Series) Externally pressurized expansion compensators (HP and HPQ series) engineered for quiet operation with internal guides. Handle compression and extension movements in sizes from 0.75 to 4 inches with pressure ratings up to 500 PSI.
• Strainers (LPD and LPD-Mag Y-Strainers) Y-strainers and basket strainers including the LPD (Low Pressure Drop) series with 30% larger screens for energy savings. The LPD-Mag variant includes Neodymium magnets to capture iron oxides and prevent pump seal failures. Models range from 0.5 to 24 inches across various pressure ratings.
• MetraVent Air Release Valves Automatic air release valves that reduce air accumulation in piping systems to improve efficiency. FM-approved models available in 175 PSI and 300 PSI ratings with 250°F maximum temperature.
• Pipe Guides and Anchors Spider-type guides, slide guides, riser guides, and anchor clamps for pipe alignment and movement control. Features include PTFE bearing pads, urethane isolation, and modular designs; custom fabrication is available for specialized applications.
• Wall Penetration Seals (MetraSeal) Mechanical interlocking rubber waterstops (MetraSeal, Off Center Seal) that create watertight seals where pipes penetrate walls. Rated for various pressures and temperatures with EPDM, Nitrile, and Silicone options.
• Delegated Design Services Engineering analysis service using CAEPipe finite element analysis software to analyze complex piping layouts for movement, stresses, and anchor loads. Deliverables include stamped calculations, material certificates, and welding certificates for project submittal requirements.
• Fittings Grooved-to-flange adaptors and plate flanges in carbon steel and stainless steel for connecting piping components. Ductile iron options rated up to 400 PSI.
• OEM Division Custom Engineering Services Custom manufacturing and engineering services for original equipment manufacturers requiring specialized engineered piping solutions. Offers product development support and custom fluid flow solutions.

Quantifiable outcome

• VFD Check Valve improves Cv 38% for a 4-inch check valve operating at 6 FPS
• +5 more outcomes

Named customers8 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

Feature7 records

Partnerships

14 partnerships are on record, tiered industry association, certification partner, testing partner and software partner.

• Fluid Sealing Association (FSA)industry associationOthersMetraflex is a proud member of the Fluid Sealing Association. The FSA provides technical resources including the Expansion Joint Technical Handbook which Metraflex references for product application guidelines.
• Fluid Controls Institute (FCI)industry associationOthersMetraflex strainers meet FCI standards including FCI 73-1 for Y-Type strainers and FCI 78-1 for pipeline strainers.
• Hydraulic Institute (HI)industry associationOthersIndustry association for pump manufacturers that Metraflex partners with as a supplier of pump connection products.
• American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)industry associationOthersIndustry association that develops standards for HVAC systems, relevant to Metraflex's core market.
• The American Society of Plumbing Engineers (ASPE)industry associationOthersProfessional organization for plumbing engineers that Metraflex partners with as a manufacturer of plumbing-related piping products.
• Mechanical Contractors Association of America (MCAA)industry associationOthersIndustry association representing mechanical contractors, relevant to Metraflex's distribution channel.
• American Fire Sprinkler Association (AFSA)industry associationOthersOrganization for fire sprinkler contractors, relevant to Metraflex's Fire Protection Division products.
• National Fire Sprinkler Association (NFSA)industry associationOthersNFSA is referenced in NFPA 13 code requirements that Metraflex's Fireloop and seismic products address.
• National Fire Protection Association (NFPA)industry associationOthersNFPA develops codes including NFPA 13 that specifies requirements for seismic joint installation in fire sprinkler piping, which Metraflex products address.
• NSF Internationalcertification partnerOthersMetraflex products are tested by independent ANSI-accredited labs including NSF for lead-free compliance under NSF/ANSI 372-2011 requirements. Products are NSF 61 & 372 certified for potable water applications.
• Utah Water Research Labtesting partnerOthersIndependent testing facility that conducted flow coefficient testing for the VFD Check Valve, validating the 38% Cv improvement claim.
• WJE (Wiss, Janney, Elstner Associates)testing partnerOthersMetraflex conducted Metraloop testing at WJE, an engineering consulting firm specializing in structural and building envelope investigations.
• CAEPipe Softwaresoftware partnerTechnology or IntegrationMetraflex uses CAEPipe finite element analysis software for delegated design services, analyzing complex piping layouts for movement, stresses and anchor loads.
• Expansion Joint Manufacturers Association (EJMA)industry associationOthersEJMA standards are referenced by Metraflex for bellows design and liner requirements. Metraflex offers expansion joints that meet EJMA standards.

Scale indicators2 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Flexicraft Industries: Chicago-area manufacturer of expansion joints, flexible hose, and pipe connectors for HVAC and process piping — direct competitor with overlapping product categories including expansion loops and pump connectors.
• Mason Industries (Taylor Devices): Long-established manufacturer of expansion joints, flexible metal hose, and vibration/seismic isolation products for piping systems — directly comparable product portfolio and customer base in commercial HVAC and seismic protection.
• Hyspan Precision Products: Manufacturer of expansion joints, flexible metal hose, and bellows for industrial and commercial piping — overlapping specialty product line with Metraflex in thermal expansion and vibration isolation.
• Tozen (Tozen Group): Manufacturer of rubber expansion joints and flexible connectors serving HVAC and industrial piping — competes with Metraflex's Metrasphere and Cablesphere product lines.
• Unisource Manufacturing: Producer of flexible couplings and piping accessories for low-pressure commercial and industrial applications — overlapping with Metraflex's flexible coupling line (Metra 101/201).

Broad incumbents

• Kadant: Public industrial equipment company that, through its fluid-handling segment, provides engineered piping and sealing solutions — broader portfolio but overlapping categories in flow control and flexible piping components.
• Garlock (EnPro Industries): Manufacturer of gaskets, sealing products, and fluid handling components serving industrial and commercial piping — overlaps with Metraflex in sealing and flexible piping for harsh-service applications.
• Kuriyama of America: Broad-line distributor/manufacturer of industrial hose, couplings, and fittings — adjacent competitor in flexible piping components with a larger catalog and broader distribution.
• Senior plc (Flexion): Global engineered components group whose Flexion business supplies flexible metal hose and braided products — competes with Metraflex's flexible metal hose line, particularly in OEM and industrial applications.

Regional players

• BOA Group (Balg- und Kompensatoren Technik): European specialist in metal expansion joints, rubber expansion joints, and flexible piping components — comparable product set serving primarily EMEA markets, with growing international presence.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/metraflex

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds5 records

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 Metraflex