Hvis du arbejder med ventiler i en international sammenhæng, kender du problemet: du ved præcis, hvad en kugleventil er, men hvad hedder den på engelsk? Denne guide er skrevet til danske ingeniører, indkøbere og teknikere, der har brug for de korrekte engelske betegnelser for de mest almindelige ventiltyper.
Below you will find a comprehensive Danish-to-English glossary of valve type terminology, along with brief explanations of each valve type and where it is typically used in process systems.
Ventiltyper — Dansk til Engelsk
Kugleventil — Ball Valve
A quarter-turn valve using a hollow, perforated, pivoting ball to control flow. The ball has a bore through its centre. When the bore aligns with the pipe, flow passes through. When rotated 90 degrees, the solid face of the ball blocks the flow. Ball valves provide tight shut-off and are used across virtually all process industries. In the MODU ONE ecosystem, this is the A10 Ball Valve.
Kontraventil — Check Valve
A valve that allows flow in one direction only. When flow reverses, the valve closes automatically — no external actuation required. Check valves prevent backflow that could damage pumps, contaminate process streams, or cause water hammer. Common subtypes include swing check, lift check, and spring-loaded disc check valves. The MODU ONE B10 Check Valve uses a soft-seated design for reliable sealing.
Reguleringsventil — Control Valve
A valve that modulates flow rather than simply opening or closing. Control valves respond to signals from a controller (typically a DCS or PLC) to adjust flow rate, pressure, or temperature in a process loop. They are the primary final control element in industrial automation. The MODU ONE C10 Sector Control Valve provides precise flow regulation within the modular ecosystem.
Spjældventil — Butterfly Valve
A quarter-turn valve using a rotating disc mounted on a shaft through the centre of the pipe. When the disc is parallel to flow, the valve is open. When perpendicular, it is closed. Butterfly valves are lightweight, compact, and cost-effective in larger sizes. They are widely used in water treatment, HVAC, and general industrial applications.
Skydeventil — Gate Valve
A linear-motion valve using a flat gate (or wedge) that slides into the flow path to stop flow. Gate valves are designed for fully open or fully closed service — they should not be used for throttling. They are common in water distribution, steam systems, and oil and gas pipelines.
Glideventil — Globe Valve
A linear-motion valve using a plug that moves perpendicular to the seat. Globe valves are well-suited for throttling and flow regulation because the plug position relative to the seat provides predictable flow characteristics. The name comes from the spherical shape of the valve body in early designs, though modern globe valves often have a different external profile.
Sikkerhedsventil — Safety Valve / Relief Valve
A valve that opens automatically when system pressure exceeds a set point, relieving excess pressure to prevent equipment damage or rupture. Safety valves (for compressible fluids like steam or gas) and relief valves (for incompressible fluids like water or oil) are critical protective devices required by pressure equipment directives and plant safety codes.
Nåleventil — Needle Valve
A small, precise valve using a tapered needle-shaped plunger to provide fine flow adjustment. Needle valves are used in instrumentation lines, sampling systems, and any application where precise, low-flow control is required. They are typically found in sizes from 1/8" to 1" NPT.
Membranventil — Diaphragm Valve
A valve using a flexible diaphragm to control flow. The diaphragm separates the process fluid from the valve mechanism, making diaphragm valves ideal for corrosive, abrasive, or hygienic applications. Widely used in pharmaceutical, food and beverage, and water treatment industries.
Si-glas / Kiglas — Sight Glass
An inline or tubular glass window that allows visual observation of process fluid. Sight glasses are used to verify flow, check fluid colour or clarity, and confirm that a system is draining or filling properly. The MODU ONE E10 Sight Glass integrates this function into the modular ecosystem with shared dimensions.
Filter / Si — Strainer
An inline device with a mesh or perforated screen that removes solid particles from a fluid stream. Strainers protect downstream equipment — pumps, valves, heat exchangers — from damage caused by debris. The MODU ONE ecosystem includes two strainer types: the D10 Strainer Inline and the F10 T-Strainer.
Generelle ventiltermer — General Valve Terminology
Beyond valve types, here are common Danish-to-English terms used in valve specification and procurement:
- Ventilhus — Valve body
- Spindel — Stem
- Sæde — Seat
- Pakning — Gasket / Seal
- Aktuator — Actuator
- Flange — Flange
- Svejseende — Butt weld end
- Gevindende — Threaded end
- Tryktab — Pressure drop
- Trykklasse — Pressure class / Pressure rating
- Nominel diameter — Nominal diameter (DN)
- Face-to-face mål — Face-to-face dimension
- Cv-værdi — Cv value (flow coefficient)
- Lækageklasse — Leakage class (per ISO 5208)
- Materialetest certifikat — Material test certificate (EN 10204)
Hvorfor dette er vigtigt
Danish engineers working with international suppliers, writing English-language specifications, or collaborating on multinational projects need precise terminology. A "kontraventil" specified as a "counter valve" (a literal translation sometimes seen) will confuse an English-speaking supplier. The correct term is "check valve" — and using it correctly avoids procurement delays, specification errors, and costly misunderstandings.
This glossary covers the most common valve types and terms used in process industries. For MODU ONE-specific terminology and product specifications, visit MODU Cloud or contact your local distributor.