Industrial gas valves
Industrial gas valves correctly specified and supplied
Industrial gas valves examined up close
Industrial gas valves are designed for the production, storage and distribution of gases such as oxygen, nitrogen, argon, hydrogen and carbon dioxide. It pays to understand the working principle behind industrial gas valves first, because the limits follow from that principle. Once industrial gas valves is correctly specified it disappears from the fault list, and that is exactly the intention. Hydrogen has a very small molecule, so a seal that is adequate for nitrogen may still leak on hydrogen. In hot oil and thermal oil service packing creep and coking on leakage are the issues, which calls for a packing system that retains preload. Hydraulic systems work with high pressure and small volumes, so leakage quickly leads to pressure loss and contamination. A correct execution of industrial gas valves accounts for real operating conditions and not only for design values. Operating conditions govern the service life of industrial gas valves far more strongly than the nominal figures on a datasheet. What weighs heaviest on industrial gas valves in practice is the combination of temperature and differential pressure, not either one alone. The medium governs a valve more than any other factor, because it fixes material selection, sealing and safety requirements. Oxygen is not flammable in itself but accelerates any combustion, which is why an oxygen valve must be degreased and assembled clean. In practice industrial gas valves is rarely a standard question once medium and temperature move away from average.
What to watch technically on industrial gas valves
Cleanliness is a design requirement rather than a finishing step, because residual grease is a genuine ignition risk on oxygen service. With industrial gas valves the seat is the component that determines performance, and the body is rarely the limiting factor. In practice we find that most failures around industrial gas valves come not from the material but from a wrong assumption during selection. Gas molecules are small, so the leakage class that is acceptable for a liquid is often not acceptable for a gas. Vacuum service reverses the requirement, because atmosphere pushes inwards and the seal has to hold from outside to inside. Cryogenic service starts roughly below minus one hundred degrees, and there the properties of almost every material change. Hydrogen also brings embrittlement into play, which rules out certain steel grades and hardness levels. Many of these plants run continuously, which makes the reliability of the isolation valves a direct availability issue. A wrongly chosen seal on an aggressive medium is almost always the cause of premature leakage, not the body. On a new medium we always advise a compatibility check up front rather than an assumption based on a comparable plant. With industrial gas valves it pays to include phase changes in the medium, because those sharply increase the load on the seal. How industrial gas valves behaves under varying load says more about the quality of the selection than behaviour under steady load.
Typical applications for industrial gas valves
They are used at air separation units, gas filling plants, distribution networks and at the industrial customers consuming those gases. In technical gases the subject is oxygen, nitrogen, argon, hydrogen and mixtures, each with its own cleanliness and safety requirements. In pharmaceutical and food production the drivers are cleanliness, flushability and demonstrable material traceability. In an existing plant industrial gas valves is often part of a wider question about availability and maintenance. The application range of industrial gas valves runs from simple utility duty to heavy process plant, with a corresponding difference in execution. We supply industrial gas valves both for new build and for replacement within existing installations. During turnarounds industrial gas valves is regularly on the critical path, and then predictability matters more than the lowest price. Chemicals and petrochemicals bring the widest variety of media and therefore the most bespoke questions. We work as a technical supplier rather than a catalogue reseller, which means we carry out the selection ourselves on the basis of medium, pressure, temperature and code requirements. On project supply we record per position which execution of industrial gas valves was delivered, including materials and tests. On replacement we always check the existing installation dimensions for industrial gas valves, so the pipework can stay untouched.
Choosing the right industrial gas valves
We never recommend a heavier execution of industrial gas valves than needed, because over specification only raises price and lead time. On every medium driven project we ask for concentration, possible contaminants and the flushing or cleaning procedure. Degreased execution, nitrogen purging and sealed bagging are not extras on oxygen and high purity duty but part of the delivery. Phase matters too, because a medium that flashes inside the valve behaves completely differently from one that stays liquid. For industrial gas valves total cost of ownership weighs more than purchase price, certainly when replacement has to happen during a shutdown. For industrial gas valves we ask as standard for DN, pressure class, medium, temperature and required actuation. Where there is doubt about industrial gas valves we quote two executions side by side, with the trade offs stated explicitly. The right choice around industrial gas valves starts with a full set of process data rather than with a request for a price. Cryogenic valves belong on a low temperature test, because a test at ambient says little about behaviour at minus one hundred and sixty degrees. Cleaning procedures for oxygen service are recorded in the documentation, including the agents used and the packing method. For an accurate quotation we need the nominal diameter, the pressure class, the medium, the operating temperature and the required actuation. Where industrial gas valves forms part of a safety function we record the fail position and required stroking time explicitly. On industrial gas valves we check that the actuator is sized on torque at maximum differential pressure and not on an average value.
Industrial gas valves supplied with technical advice
For industrial gas valves you can come to Dutch Valve Vision for the selection, the delivery and the support afterwards. Dutch Valve Vision supplies special valves for special applications from its base in Monster, the Netherlands, with QUADAX and PRUSS as the core brands in the programme. We supply industrial gas valves as a loose product or as a fully assembled unit with actuator and accessories. Dutch Valve Vision stays available after delivery of industrial gas valves for technical questions and for parts. We keep spare parts and overhaul kits mapped per project, so that a breakdown does not start with a search from scratch. On repeat orders we record the configuration, so a follow up delivery is identical to the first and installation holds no surprises. We record which execution of industrial gas valves was delivered, so a follow up delivery or spare part matches exactly later on. Material certificates and test reports are supplied with industrial gas valves, matched to what the project requires. Documentation on industrial gas valves has to be the kind a buyer or inspector accepts without discussion. Even when the specification for industrial gas valves is not yet finalised, you can bring the question to us. We handle an enquiry for industrial gas valves on its technical merits rather than as a price request that only produces a number. Bring us your question at sales@dutchvalvevision.com or +31 (0)70-2210560, even when the specification is not finalised yet.
Frequently asked questions about industrial gas valves
What exactly does industrial gas valves mean?
Cryogenic service starts roughly below minus one hundred degrees, and there the properties of almost every material change. The medium governs a valve more than any other factor, because it fixes material selection, sealing and safety requirements. Vacuum service reverses the requirement, because atmosphere pushes inwards and the seal has to hold from outside to inside. Industrial gas valves are designed for the production, storage and distribution of gases such as oxygen, nitrogen, argon, hydrogen and carbon dioxide. We always explain why we arrive at a particular recommendation on industrial gas valves, so you can follow the reasoning yourself. On industrial gas valves we include start up and shutdown, because that is where the heaviest loading occurs. With industrial gas valves the difference between a good and a mediocre solution often sits in details that do not show on a drawing. We think along from the basic specification through to the tag plate, and supply documentation that a buyer or inspector accepts without discussion.
Which executions of industrial gas valves are available?
Oxygen is not flammable in itself but accelerates any combustion, which is why an oxygen valve must be degreased and assembled clean. A wrongly chosen seal on an aggressive medium is almost always the cause of premature leakage, not the body. Hydraulic systems work with high pressure and small volumes, so leakage quickly leads to pressure loss and contamination. Hydrogen has a very small molecule, so a seal that is adequate for nitrogen may still leak on hydrogen. On industrial gas valves we prefer a well founded answer to a fast one that turns out to be wrong later. We see this come back regularly in enquiries about industrial gas valves, and the answer is rarely a single sentence. On industrial gas valves we always check the full operating envelope, including start up and shutdown. What defines us is that we would rather spend an extra half hour on the specification than ship the wrong valve that comes back two months later.
Which materials are used for industrial gas valves?
Cleaning procedures for oxygen service are recorded in the documentation, including the agents used and the packing method. Many of these plants run continuously, which makes the reliability of the isolation valves a direct availability issue. On a new medium we always advise a compatibility check up front rather than an assumption based on a comparable plant. Cryogenic valves belong on a low temperature test, because a test at ambient says little about behaviour at minus one hundred and sixty degrees. That makes industrial gas valves a subject where discussion up front pays for itself in operation. For industrial gas valves a good specification up front is cheaper than a correction afterwards. We regularly see that a small change in the execution of industrial gas valves makes a large difference to maintenance frequency. Dutch Valve Vision supplies special valves for special applications from its base in Monster, the Netherlands, with QUADAX and PRUSS as the core brands in the programme.
What should I watch technically on industrial gas valves?
What should I watch technically on industrial gas valves?
Which applications call for industrial gas valves?
Chemicals and petrochemicals bring the widest variety of media and therefore the most bespoke questions. They are used at air separation units, gas filling plants, distribution networks and at the industrial customers consuming those gases. In pharmaceutical and food production the drivers are cleanliness, flushability and demonstrable material traceability. In technical gases the subject is oxygen, nitrogen, argon, hydrogen and mixtures, each with its own cleanliness and safety requirements. The answer to this question on industrial gas valves changes as soon as the medium or the temperature changes. This is one of the points on industrial gas valves where suppliers differ most clearly from one another. Our customers use industrial gas valves in positions where a failure has immediate consequences for production. Our market is project driven and international, and we deliver worldwide to installers, EPC contractors and end users.
What determines the price and lead time of industrial gas valves?
On repeat orders we record the configuration, so a follow up delivery is identical to the first and installation holds no surprises. For an accurate quotation we need the nominal diameter, the pressure class, the medium, the operating temperature and the required actuation. A P&ID, a datasheet or even a photograph of the existing installation often helps us faster than a long description. We quote a realistic lead time rather than an optimistic one, because a missed delivery date costs more than an extra week in the planning. If you are unsure about this on industrial gas valves, we are glad to put the question alongside the actual process data. The answer on industrial gas valves depends strongly on operating conditions, which is why we always ask for those first. On industrial gas valves we come back with a proposal that explains why we recommend a particular execution. Bring us your question at sales@dutchvalvevision.com or +31 (0)70-2210560, even when the specification is not finalised yet.
What about maintenance and spare parts on industrial gas valves?
We keep spare parts and overhaul kits mapped per project, so that a breakdown does not start with a search from scratch. For shutdowns and turnarounds we look at accelerated routes, and in those cases we are honest up front about what is and is not achievable. Documentation such as material certificates, test reports and declarations is supplied as standard, matched to what the project requires. Lead times depend on the execution, because a standard size from a running series behaves very differently from a valve in an exotic alloy with NACE certification. Our experience with industrial gas valves comes from projects in chemicals, power generation, technical gases and offshore. On industrial gas valves we prefer a well founded answer to a fast one that turns out to be wrong later. A tag plate with project data belongs with industrial gas valves as standard where the project requires it. Alongside QUADAX and PRUSS we represent Pibiviesse, Schroeder, Striko, Malbranque, Daume, FluoroSeal and Guichon, so we can select the right brand for each project.
How do I request a quotation for industrial gas valves?
Please also state the connection standard, the required leakage class and any project requirements such as NACE, PED or ATEX. If you have an existing tag plate or serial number, send it along, because that lets us work directly from the original configuration. We come back with a proposal that explains why we recommend a particular execution, including the alternatives we considered. For an accurate quotation we need the nominal diameter, the pressure class, the medium, the operating temperature and the required actuation. The answer to this question on industrial gas valves changes as soon as the medium or the temperature changes. Our experience with industrial gas valves comes from projects in chemicals, power generation, technical gases and offshore. Our specialists are happy to discuss industrial gas valves on the basis of your P&ID, your datasheet or simply a photograph of the situation. Send us your DN, pressure class, medium and temperature at sales@dutchvalvevision.com, or call +31 (0)70-2210560 to speak to a specialist.