LESER

What LESER does

LESER (legal entity LESER GmbH & Co. KG) is a privately held German manufacturer specializing exclusively in industrial safety valves for overpressure protection. Founded in 1818 and headquartered in Hamburg at Wendenstrasse 133-135, the company operates Europe's largest safety valve production facility in Hohenwestedt, Germany, and runs additional direct offices in Charlotte, NC and Houston, TX serving the United States. The product portfolio is organized into standardized lines — API, High Efficiency (pilot-operated), Compact Performance, High Performance, Modulate Action, Critical Service (PTFE-lined for corrosive media), Clean Service (food, beverage, pharmaceutical) and S&R (heating technology) — supplemented by Best Availability change-over valves (Type 320 Flow, Type 330 Compact) and bursting disc combinations (KUB) that enable continuous 24/7 plant operation. Supporting digital products include VALVESTAR (sizing and selection software), LESER ID Link (QR-coded stainless-steel tag with digital documentation), LESER Remote Inspection (video-data-glasses-based digital acceptance), and LESER Digital Twin (digital asset management).

The company operates a hybrid go-to-market combining direct sales offices with a worldwide sales partner network and a separate LESER Authorized Repair Centers (LARC) service partner network for maintenance and retrofit. Region-specific competence centers provide direct customer support across markets including the USA, Germany, China, India, Russia, Spain, France, Poland and Brazil. Revenue is generated primarily through hardware sales of configured safety valves, with a secondary professional-services stream from technical training (live online, online courses, in-person at Hohenwestedt). Pricing is not publicly disclosed and is configured per industrial specification.

LESER sells into ten vertical segments — Oil & Gas, Chemical, Petrochemical, Technical Gases, Energy, LNG & LPG, Pharmaceutical, Food & Beverage, Ship Building and HVAC — with named enterprise customers including ARKEMA, Shell Deutschland Oil GmbH, Linde and SEICO Heizungen GmbH. The company's stated value proposition rests on sole-focus specialization in overpressure protection, flow-optimized designs validated through CFD and endurance testing, international market-leadership positioning, and a layered digital toolchain intended to embed LESER-specific documentation, sizing and inspection workflows into customer operations.

Name

LESER

Legal name

LESER GmbH & Co. KG

Website

https://leser.com

Company type

Private

Founded year

1818

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

LESER GmbH & Co. KG is a privately held German manufacturer specializing in industrial safety valves for overpressure protection, serving oil & gas, chemical, petrochemical and related industrial customers worldwide from its Hamburg headquarters and Hohenwestedt production facility.

Ownership category

akta.pro rank

Headquarters

HQ city

Hamburg

HQ country

Germany

HQ region

Europe

Offices4 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. Safety Valve Products: LESER generates revenue through the sale of industrial safety valves, including API, High Efficiency, Compact Performance, High Performance, Modulate Action, Critical Service, Clean Service, and S&R valve product lines. Additional revenue streams include change-over valves and bursting disc combinations.
2. Training and Seminars: LESER offers technical training programs including live online training and online courses covering safety valve basics, sizing and calculation, and maintenance and repair. Training conducted at Hohenwestedt facility or remotely.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

LESER designs and manufactures a comprehensive portfolio of industrial safety/pressure relief valves for overpressure protection across all industrial applications, including API, High Efficiency pilot-operated, Compact Performance, High Performance, Modulate Action, Critical Service, Clean Service, S&R valves, plus Best Availability change-over valves and bursting disc combinations. The company complements hardware with digital tools for sizing (VALVESTAR), digital identification (ID Link), remote inspection, and digital twin valve management, supporting customers in oil & gas, chemical, petrochemical, technical gases, energy, LNG & LPG, pharmaceutical, food & beverage, shipbuilding, and HVAC industries.

Product overview

LESER is a safety valve specialist offering a comprehensive portfolio of pressure relief valves for industrial applications. The core product line includes multiple valve types: API (standardized safety valves), High Efficiency Pilot-Operated valves, Compact Performance valves, High Performance valves, Modulate Action valves (for liquids), Critical Service valves (PTFE-lined for corrosive media), Clean Service valves (for food/pharmaceutical), and S&R valves (for heating technology). Supporting products include Best Availability Change-over valves and Bursting disc combinations for continuous plant operation. LESER also provides digital services including the LESER ID Link (QR-based digital valve identification), Remote Inspection (video-enabled digital acceptance), and VALVESTAR® (sizing and selection software). The company serves industries including oil & gas, chemical, petrochemical, technical gases, energy, LNG & LPG, pharmaceutical, food & beverage, and ship building.

Differentiator

Problem solved

Functional benefit

Brands

• VALVESTAR: LESER's sizing and selection program for safety valves
• LESER ID Link
• LESER Chatroom
• LESER Remote Inspection
• LESER Digital Twin
• LEPP

Products and services

• API Safety Valves Safety valves designed and manufactured in accordance with API 526, offering standardized capacities, installation dimensions, and materials for industrial overpressure protection. Intended for process-industry operators (oil & gas, chemical, petrochemical).
• High Performance Safety Valves Safety valves designed for robust overpressure protection across all industrial applications requiring durable pressure relief. Target users: enterprise process-industry plants.
• High Efficiency Pilot-Operated Safety Valves Pilot-operated safety valve solutions for demanding industrial applications, providing high plant efficiency. Target users: enterprise process plants with high-throughput or high-pressure requirements.
• High Efficiency Supplementary Loading System (SLS2) Supplementary loading system designed to work with LESER pilot-operated safety valves to deliver high plant efficiency in demanding industrial applications. Target users: enterprise process-plant operators using pilot-operated safety valves.
• Compact Performance Safety Valves Safety valves with compact dimensions and variable connections for versatile industrial applications where installation space is constrained. Target users: industrial operators with compact-installation requirements.
• Modulate Action Pressure Relief Valves Modulating-action pressure relief valves for controlled pressure relief, primarily for liquid applications. Target users: process plants handling liquids that require controlled rather than pop-action relief.
• Critical Service Pressure Relief Valves (PTFE-lined) PTFE-lined safety valves engineered for corrosive media in critical industrial applications. Target users: chemical and process-industry plants handling highly corrosive fluids.
• Clean Service Pressure Relief Valves (Type 483) Safety valves specifically designed for food, beverage, and pharmaceutical applications requiring hygienic standards. Target users: pharmaceutical, food & beverage, and clean-environment manufacturers.
• S&R Pressure Relief Valves Safety valves specifically designed for heating technology applications. Target users: heating technology operators (e.g., heating-system OEMs, industrial heating installations).
• Best Availability Change-over Valves (Type 320 Flow / Type 330 Compact) Change-over valves designed for continuous 24/7 plant availability when combined with safety valves. Includes Type 320 Flow (minimum pressure losses) and Type 330 Compact (compact dimensions). Target users: process plants with non-stop operation requirements (e.g., ARKEMA's hydrogen peroxide facility).
• Best Availability Bursting Disc Combination Part-tested safety valves combined with bursting discs for high plant availability. Target users: process plants needing redundant overpressure protection without shutdowns.

Quantifiable outcome

• High plant availability 24/7 with LESER change-over valves

Named customers4 records

Segments10 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Pentair: Pentair's flow and filtration solutions include safety and pressure relief valves serving industrial process customers. As a larger diversified water and flow-control company, Pentair offers customers bundled solutions that overlap with LESER's industrial safety valve offering.
• Crane Co. Crane Co.'s Crane ChemPharma & Energy division produces engineered valves including pressure relief valves for chemical, petrochemical, and general industrial applications. It is a comparable broad-portfolio incumbent competing with LESER in process industries.
• Flowserve Corporation: Flowserve is a major industrial pump and valve manufacturer with a broad safety and pressure relief valve portfolio serving oil & gas, chemical, power, and water industries. It competes with LESER on engineered safety valves in process-industry applications, while offering a much wider rotating-equipment portfolio.
• KSB SE & Co. KGaA: KSB is a German-based global manufacturer of pumps, valves, and related systems serving industrial process applications including safety/relief valves. As a direct German peer with overlapping industrial customers, KSB competes with LESER particularly in chemical, power, and water markets.
• IMI plc: IMI is a UK-listed engineered components group with a critical engineering division that includes safety and pressure relief valves for process industries. It competes with LESER in oil & gas and chemical end markets through brands like IMI Critical Engineering, alongside a much broader fluid-power portfolio.
• Spirax-Sarco Engineering: Spirax-Sarco is a global specialist in steam and thermal energy management, including pressure and safety valves used in steam systems and process heating. It overlaps with LESER's S&R heating and industrial steam applications, particularly in European industrial markets.
• Emerson (Fisher / Crosby / Anderson Greenwood): Emerson owns Crosby and Anderson Greenwood, two of the most established safety/pressure relief valve brands globally. It is the dominant incumbent in process-industry pressure management and competes head-on with LESER across oil & gas, chemical, and refining applications, though as part of a much broader automation portfolio.

Direct peers

• Velan Inc. Velan is a publicly listed manufacturer of industrial valves including a dedicated line of pressure safety/relief valves for severe-service applications in oil & gas, petrochemical, and power generation. It is one of the closest pure-play comparables to LESER as a specialist valve maker.
• Curtiss-Wright (Farris Engineering): Curtiss-Wright's Farris Engineering business is a long-established pressure relief valve specialist serving oil & gas, chemical, and power generation customers. It is a direct comparable to LESER in safety relief valves, though operating as a smaller unit within a much larger diversified defense/industrial group.

Emerging players

• Watts Water Technologies: Watts Water manufactures plumbing, heating, and water safety valves including pressure relief products. While more focused on commercial and residential applications, it overlaps with LESER's S&R heating and HVAC segments with comparable relief-valve technology.

Market position

Strengths1 record

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/leserthesafetyvalve
• Facebookfacebook.com/leserthesafetyvalve
• LinkedInlinkedin.com/company/leser-us
• Xx.com/leser_uk

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 LESER