Butterfly valve PN100
Everything about butterfly valve PN100 for industry
The working principle of butterfly valve PN100
A butterfly valve PN100 is rated for a nominal pressure of one hundred bar, which in practice means a metal seated offset construction with a reinforced body and shaft. In practice butterfly valve PN100 is rarely a standard question once medium and temperature move away from average. With butterfly valve PN100 the difference between a good and a mediocre solution often sits in details that do not show on a drawing. The pressure class states which pressure a valve can hold at a reference temperature, and that value drops as temperature rises. Class 600 corresponds roughly to PN100 and class 900 to PN160, but the pressure temperature curves do not run exactly parallel and that has to be checked case by case. The pressure temperature curve from the construction standard is leading, and that curve is why a class 600 valve may hold far less than one hundred bar at five hundred degrees. We regularly see that a small change in the execution of butterfly valve PN100 makes a large difference to maintenance frequency. A correct execution of butterfly valve PN100 accounts for real operating conditions and not only for design values. The balance between required tightness and available operating force is a recurring tension on butterfly valve PN100. At higher pressure classes the wall thickness, flange design and stem diameter all increase, which immediately raises weight and operating torque. PN100 means a nominal pressure of one hundred bar, while the American ANSI and ASME system works with class 150 up to class 2500. The term butterfly valve PN100 is used broadly in the market, which is why it helps to define precisely what it means in your case.
Specifications and executions of butterfly valve PN100
At this pressure class a concentric valve with a soft liner is simply no longer a candidate. For butterfly valve PN100 this means that construction and operating conditions cannot be judged separately. In practice we find that most failures around butterfly valve PN100 come not from the material but from a wrong assumption during selection. Torque rises sharply with differential pressure, so actuator sizing has to be done for the worst case and not the average case. In the high pressure segment a metal seated offset butterfly valve reaches tightness levels that used to require a ball valve or a gate valve. The differential pressure across the closed valve governs the design more than system pressure does, because that difference loads the seat. The main gain over a ball or gate valve at PN100 is weight and installed length, which matters on large diameters. The stem connection is a critical point on high pressure valves, and a one piece shaft without a pin prevents the disc from being blown out. Material selection becomes more important at high pressure, because stresses in the body and stem approach the allowable limit. With butterfly valve PN100 it pays to include phase changes in the medium, because those sharply increase the load on the seal. On butterfly valve PN100 we always check the full operating envelope, including start up and shutdown.
Sectors and applications for butterfly valve PN100
Typical duties are high pressure gas, technical gases, steam systems and hydrogen compression lines. High pressure applications appear in technical gases, in power generation, in hydrogen compression and in petrochemicals. In steam plant pressure and temperature rise together, and that is exactly the combination where many standard valves drop out. We supply butterfly valve PN100 both for new build and for replacement within existing installations. In plants where butterfly valve PN100 is applied, the emphasis is on reliability rather than lowest purchase price. In an existing plant butterfly valve PN100 is often part of a wider question about availability and maintenance. For butterfly valve PN100 the sector determines which documentation and tests belong with the delivery. Hydrogen projects call for pressure classes that were unusual until recently, and a large part of our recent enquiry volume sits there. Alongside QUADAX and PRUSS we represent Pibiviesse, Schroeder, Striko, Malbranque, Daume, FluoroSeal and Guichon, so we can select the right brand for each project. Our customers work in chemicals, petrochemicals, pharmaceuticals, power generation, offshore and in hydrogen and ammonia projects. The application range of butterfly valve PN100 runs from simple utility duty to heavy process plant, with a corresponding difference in execution. During turnarounds butterfly valve PN100 is regularly on the critical path, and then predictability matters more than the lowest price.
Selection criteria for butterfly valve PN100
Standardising across several positions makes butterfly valve PN100 simpler in maintenance and in spare parts management. Test pressure counts too, because a hydrostatic test at one and a half times design pressure sets its own demands on the construction. Face to face length to API 609 or EN 558 determines whether a high pressure butterfly valve fits an existing line without modification. At high differential pressure we look at cavitation and flashing, because those phenomena cause damage faster than pressure alone. For butterfly valve PN100 total cost of ownership weighs more than purchase price, certainly when replacement has to happen during a shutdown. The required leakage class often drives the choice around butterfly valve PN100 more strongly than the budget does. Where there is doubt about butterfly valve PN100 we quote two executions side by side, with the trade offs stated explicitly. For butterfly valve PN100 we ask as standard for DN, pressure class, medium, temperature and required actuation. A blow out proof construction is not a luxury at high pressure but a safety requirement stated explicitly in most specifications. Please also state the connection standard, the required leakage class and any project requirements such as NACE, PED or ATEX. Where butterfly valve PN100 forms part of a safety function we record the fail position and required stroking time explicitly. On butterfly valve PN100 we check that the actuator is sized on torque at maximum differential pressure and not on an average value.
Butterfly valve PN100 supplied with technical advice
We supply butterfly valve PN100 as a loose product or as a fully assembled unit with actuator and accessories. Alongside QUADAX and PRUSS we represent Pibiviesse, Schroeder, Striko, Malbranque, Daume, FluoroSeal and Guichon, so we can select the right brand for each project. We handle an enquiry for butterfly valve PN100 on its technical merits rather than as a price request that only produces a number. We think along on the spare parts strategy for butterfly valve PN100, so critical positions stay covered. We keep spare parts and overhaul kits mapped per project, so that a breakdown does not start with a search from scratch. 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. Material certificates and test reports are supplied with butterfly valve PN100, matched to what the project requires. Tests around butterfly valve PN100 are carried out by us or on our instruction according to the requirements in the specification. Documentation on butterfly valve PN100 has to be the kind a buyer or inspector accepts without discussion. Our specialists are happy to discuss butterfly valve PN100 on the basis of your P&ID, your datasheet or simply a photograph of the situation. Even when the specification for butterfly valve PN100 is not yet finalised, you can bring the question to us. We are based at Vlotlaan 641, 2681 TZ Monster in the Netherlands and can be reached on +31 (0)70-2210560 and at sales@dutchvalvevision.com.
Frequently asked questions about butterfly valve PN100
What exactly does butterfly valve PN100 mean?
At higher pressure classes the wall thickness, flange design and stem diameter all increase, which immediately raises weight and operating torque. The differential pressure across the closed valve governs the design more than system pressure does, because that difference loads the seat. A butterfly valve PN100 is rated for a nominal pressure of one hundred bar, which in practice means a metal seated offset construction with a reinforced body and shaft. Class 600 corresponds roughly to PN100 and class 900 to PN160, but the pressure temperature curves do not run exactly parallel and that has to be checked case by case. We see this come back regularly in enquiries about butterfly valve PN100, and the answer is rarely a single sentence. On butterfly valve PN100 we prefer a well founded answer to a fast one that turns out to be wrong later. The subject of butterfly valve PN100 touches both the construction of the valve and the way the plant is operated. 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.
Which executions of butterfly valve PN100 are available?
The pressure temperature curve from the construction standard is leading, and that curve is why a class 600 valve may hold far less than one hundred bar at five hundred degrees. A blow out proof construction is not a luxury at high pressure but a safety requirement stated explicitly in most specifications. Torque rises sharply with differential pressure, so actuator sizing has to be done for the worst case and not the average case. At this pressure class a concentric valve with a soft liner is simply no longer a candidate. Our experience with butterfly valve PN100 comes from projects in chemicals, power generation, technical gases and offshore. In most projects butterfly valve PN100 turns out to be less standard than it first appears. Operating conditions govern the service life of butterfly valve PN100 far more strongly than the nominal figures on a datasheet. Our market is project driven and international, and we deliver worldwide to installers, EPC contractors and end users.
Which materials are used for butterfly valve PN100?
The main gain over a ball or gate valve at PN100 is weight and installed length, which matters on large diameters. The stem connection is a critical point on high pressure valves, and a one piece shaft without a pin prevents the disc from being blown out. Material selection becomes more important at high pressure, because stresses in the body and stem approach the allowable limit. PN100 means a nominal pressure of one hundred bar, while the American ANSI and ASME system works with class 150 up to class 2500. We always explain why we arrive at a particular recommendation on butterfly valve PN100, so you can follow the reasoning yourself. The answer to this question on butterfly valve PN100 changes as soon as the medium or the temperature changes. That principle explains why butterfly valve PN100 behaves differently from a standard execution under heavier duty. Dutch Valve Vision operates under a KIWA ISO 9001 certified quality system, which in the RFQ stage of chemical and offshore projects is usually a hard requirement.
What should I watch technically on butterfly valve PN100?
What should I watch technically on butterfly valve PN100?
Which applications call for butterfly valve PN100?
Typical duties are high pressure gas, technical gases, steam systems and hydrogen compression lines. High pressure applications appear in technical gases, in power generation, in hydrogen compression and in petrochemicals. Hydrogen projects call for pressure classes that were unusual until recently, and a large part of our recent enquiry volume sits there. In steam plant pressure and temperature rise together, and that is exactly the combination where many standard valves drop out. This is one of the points on butterfly valve PN100 where suppliers differ most clearly from one another. The answer on butterfly valve PN100 depends strongly on operating conditions, which is why we always ask for those first. Our customers use butterfly valve PN100 in positions where a failure has immediate consequences for production. Our customers work in chemicals, petrochemicals, pharmaceuticals, power generation, offshore and in hydrogen and ammonia projects.
What determines the price and lead time of butterfly valve PN100?
For an accurate quotation we need the nominal diameter, the pressure class, the medium, the operating temperature and the required actuation. We come back with a proposal that explains why we recommend a particular execution, including the alternatives we considered. A P&ID, a datasheet or even a photograph of the existing installation often helps us faster than a long description. 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. On butterfly valve PN100 we include start up and shutdown, because that is where the heaviest loading occurs. For butterfly valve PN100 a good specification up front is cheaper than a correction afterwards. For repeat orders of butterfly valve PN100 we record the configuration, so a follow up delivery is identical to the first. We are based at Vlotlaan 641, 2681 TZ Monster in the Netherlands and can be reached on +31 (0)70-2210560 and at sales@dutchvalvevision.com.
What about maintenance and spare parts on butterfly valve PN100?
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. 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. On repeat orders we record the configuration, so a follow up delivery is identical to the first and installation holds no surprises. On butterfly valve PN100 we include start up and shutdown, because that is where the heaviest loading occurs. In most projects butterfly valve PN100 turns out to be less standard than it first appears. On butterfly valve PN100 we make sure the chosen execution demonstrably meets the stated standards rather than merely looking plausible on paper. 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.
How do I request a quotation for butterfly valve PN100?
We keep spare parts and overhaul kits mapped per project, so that a breakdown does not start with a search from scratch. If you have an existing tag plate or serial number, send it along, because that lets us work directly from the original configuration. Please also state the connection standard, the required leakage class and any project requirements such as NACE, PED or ATEX. We come back with a proposal that explains why we recommend a particular execution, including the alternatives we considered. We see this come back regularly in enquiries about butterfly valve PN100, and the answer is rarely a single sentence. The answer on butterfly valve PN100 depends strongly on operating conditions, which is why we always ask for those first. Dutch Valve Vision stays available after delivery of butterfly valve PN100 for technical questions and for parts. Call +31 (0)70-2210560 or send your specification to sales@dutchvalvevision.com and we will pick it up.