What DK Lok does

DK Lok (디케이락) is a South Korean industrial manufacturer founded in 1991 that designs and produces high-precision fluid control components for instrumentation, semiconductor, and process applications. The company operates a unified three-segment product portfolio spanning Instrumentation Products (tube fittings, valves, quick connectors, and tubing/hose assemblies covering JIS, DIN, JIC, and aerospace-grade variants), Semiconductor Products (ultra-high purity (UHP) fittings, VC DCR components, VR fittings, UMRG4/URG1/URG2 regulator series, IGS gas systems, and bellows/diaphragm/check valves), and Process Products (DQ and GJ series, trunnion and floating ball valves, globe valves, and gate valves). Its engineering is positioned around four core performance attributes — durability, corrosion resistance, sealing capability (기밀성), and compatibility (호환성) — and targets demanding service environments including high-pressure, corrosive, cryogenic, and ultra-high purity applications. The company holds no AI, software, or digital platform layer; its technology stack is mechanical and metallurgical.

DK Lok generates revenue through B2B hardware sales of fittings, valves, quick connectors, and tube/hose assemblies to industrial end-customers across six primary verticals: Energy, Oil/Gas/Refining/Chemical, Power Generation/EPC, Semiconductor/Display, Shipbuilding/Marine, and Machinery/Equipment, with growing exposure to Aviation/Defense and emerging green-energy segments (hydrogen, CNG/RNG/NGV). Pricing is quote-based and not publicly disclosed. Go-to-market is channel-led: the company operates as an export-oriented Korean SME with 124 distributors across 45 countries spanning Korea, the Americas, Europe, Asia, the Middle East, Africa, and Oceania, with a single headquarters in Gimhae, South Korea, and a workforce of 251–500 employees. The business carries no disclosed parent company, no institutional investors, no public listing, and no recorded funding rounds or M&A activity in the available data.

Name

DK Lok

Legal name

디케이락(주)

Website

https://dklok.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

251–500 employees

Short description

DK Lok (디케이락) is a South Korean industrial manufacturer (founded 1991) producing precision fluid control components — tube fittings, valves, quick connectors, and tubing — for energy, oil & gas, semiconductor, aerospace, shipbuilding, and hydrogen applications, distributed globally through 124 distributors across 45 countries.

Ownership category

akta.pro rank

Product category

Industrial Fluid Control Components

NAICS

Fluid Power Valve and Hose Fitting Manufacturing (332912), Industrial Valve Manufacturing (332911), Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Rubber and Plastics Hoses and Belting Manufacturing (326220), Metal Valve Manufacturing (33291)

SIC

Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Hoses, Tubing & Fittings (Hydraulic/Pneumatic Lines & Connectors) (IMAHAGAH)

akta.pro secondary industries

Valves & Cartridge Valves (Directional, Pressure, Flow Control) (IMAHAGAE), Process Gases & Gas Delivery Consumables (Specialty/Bulk/UHP) (HDAHAGAL)

Keywords

• Industrial tube fittings
• Process valves
• Fluid control components
• Ultra-high purity fittings
• Instrumentation fittings

Headquarters

HQ city

Kimhae

HQ country

South Korea

HQ region

Asia

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. Industrial Components Sales: Revenue generated from the sale of precision fittings, valves, quick connectors, and tube/hose products to industrial customers across energy, semiconductor, and aerospace sectors globally.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

DK Lok manufactures and sells precision tube fittings, valves, quick connectors, and tube/hose products for industrial fluid control applications. The portfolio is organized into three lines: Instrumentation Products (compression fittings, O-ring face seal fittings, needle/bellows/diaphragm valves), Semiconductor Products (ultra-high purity fittings, regulators, IGS components), and Process Products (ball, gate, globe, and trunnion valves) for oil & gas, refining, chemical, power, hydrogen, and aerospace applications.

Product overview

DK Lok (디케이락) is an industrial manufacturer specializing in high-precision fluid system components. The company operates a unified product portfolio organized into three main categories: Instrumentation Products (계장 제품), Semiconductor Products (반도체용 제품), and Process Products (프로세스 제품). Instrumentation Products include Tube Fittings (with 13 sub-types including compression, bite-type, O-ring face seal, JIC, vacuum, and high-pressure variants), Valves (needle, ball, plug, bellows, diaphragm, check, relief, cryogenic, and specialty valves), Quick Connect couplings, and Tube & Hose assemblies. Semiconductor Products are specifically designed for ultra-high purity environments, featuring UHP Fittings (DCR series), VC DCR components, VR Fittings, Regulators (UMRG4, URG1, URG2 series), IGS gas systems, and specialized valves. Process Products comprise industrial valves including DQ and GJ Series, Trunnion and Floating Ball Valves, Globe Valves, Gate Valves, and related process equipment. The company serves diverse industries including energy, oil/gas, refining, chemical, power generation, shipbuilding, semiconductor, aerospace/defense, and hydrogen/CNG/RNG/NGV applications, with a global network of 124 distributors across 45 countries.

Differentiator

Problem solved

Functional benefit

Products and services

• Tube Fittings (Instrumentation)
• Instrumentation Valves
• Quick Connect Couplings
• Tube & Hose Products
• Semiconductor UHP Components
• Process Valves
• Installation and Maintenance Tools

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators2 records

Expansion highlights5 records

Broad incumbents

• Flowserve Corporation: Global supplier of industrial valves, pumps, seals, and flow automation services primarily serving oil and gas, chemical, power, and water industries. Flowserve overlaps with DK Lok's Process Products division — particularly globe, gate, ball, and check valves used in oil/gas and chemical processing.
• CIRCOR International: Manufacturer of flow-control products including valves, fittings, and instrumentation for industrial, energy, and aerospace markets. CIRCOR's product portfolio overlaps with DK Lok's Process and Instrumentation lines, particularly in oil/gas and power generation applications.
• Watts Water Technologies: Manufacturer of valves, fittings, and fluid-control products primarily for water, plumbing, and industrial markets. Watts overlaps with DK Lok in valve and fitting categories but skews more toward water and building-services applications than instrumentation or semiconductor.
• Parker Hannifin: Large U.S. diversified motion-and-control technology company with extensive tube fitting, valve, quick-connect, and hose product lines serving industrial, aerospace, and process markets. Parker overlaps with DK Lok across instrumentation, hydraulic, and aerospace fitting categories, but as one division among many.
• Emerson Electric (Automation Solutions / ASCO): Diversified industrial conglomerate with a substantial fluid control and process automation portfolio including ASCO solenoid valves and Fisher control valves. Emerson is a broad incumbent competitor across many of DK Lok's end markets, particularly in process industries and instrumentation.

Direct peers

• Swagelok Company: U.S.-headquartered global leader in tube fittings, valves, and fluid system components. Swagelok is the benchmark incumbent in DK Lok's core category and the primary competitor for OEM and EPC accounts worldwide.
• Hy-Lok Corporation: Korea-based manufacturer of instrumentation tube fittings, valves, and related fluid-system components. Hy-Lok is the most direct head-to-head competitor to DK Lok, with a near-identical product architecture across compression fittings, valves, and quick connects sold into the same instrumentation and process end markets.
• Fujikin Incorporated: Japanese manufacturer of ultra-high purity fluid components for semiconductor, display, and analytical-instrument applications. Fujikin is a particularly close peer for DK Lok's UHP Semiconductor Products line, where both compete on contamination control, electropolished finishes, and gas-delivery regulators.
• HAM-LET Group: Israel-based manufacturer of high-purity tube fittings, valves, and fluid control components. HAM-LET overlaps directly with DK Lok's instrumentation, semiconductor, and process product lines and serves the same industrial, semiconductor, and analytical-instrument customers.

Regional players

• Kitz Corporation: Japanese industrial valve manufacturer with strong presence across Asia producing bronze, stainless, and cast steel valves for plumbing, HVAC, and industrial process markets. Kitz is comparable in product scope to DK Lok's Process Products line, with particular overlap in Japan and other Asian markets where DK Lok's distributor footprint is still developing.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/DKLok_HQ
• Facebookfacebook.com/DKLokHQ
• LinkedInlinkedin.com/company/dklok

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 DK Lok