Stronger, leakproof bolted body bonnet joint ensures joint tightness with a higher bolting torque. Parallel slide valves parasura parallel slide has kosos own designconstruction to realize very good and firm metaltometal touch sealing performance. This is because the gate is not torqued into the seats like a wedge gate. Used in high pressure and high temperature applications, the unique design of the taylor parallel slide isolating gate valve allows it to maintain fluid tightness without. In addition, the wedge guiding minimizes seat rubbing and scuffing as seats are contacted only at the. The course, designed with extensive graphics and hydraulic animation, gives a very clear and detailed knowledge on the subject. Parallel slide valves contact us or call 01291 430808. Providing tight shutoff under the most severe conditions, this exclusive disk and wedge design resists effects of extreme temperatures, gross thermal transients. Choose between free animation software and paid ones. The worcot uk range of high pressure parallel slide gate valve is primarily designed for isolation of steam and feed water as well as many other applications. Parallel slide gate valve psg the valvtechnologies parallel slide gate valve psg addresses advanced design features and benefits and the need for true inline valve reparability in large diameter, highenergy piping systems resulting from those enhancements. Hopkinson parallel slide valves cr4 discussion thread.
What is the difference between parallel gate valves and. The slide valve is a rectilinear valve used to control the admission of steam into, and emission of exhaust from, the cylinder of a steam engine. Switch valves for coking service 20 valvtechnologies, inc. All components that are subject to erosion and wear are easily replaceable. Parallel slide gate valve provides a smooth flow path between seats. Free download valve software do following operation conditions for a control valve in a parallel pipeline system. The seats are parallel and the disc has no contact with the seats during the stroke of the valve. Parallel slide gate valves inclined globe valve design. Powerpoint is useful for helping develop the slide based presentation format and is currently one of the most commonly used slide. Parallel gate valves parallel slide gate valves for those applications when large temperature variations are expected or fast shuttoff is required, this is the most ideal design. Used in high pressure and high temperature applications, the unique design of the taylor parallel slide isolating.
The training course on industrial hydraulics has been developed to understand the basic hydraulic working principle and the various components used in a hydraulic circuit. The alvin paralliner straightedge parallel bars are perfect for drafting, engineering and construction applications. The central carrier provides strenght to the stem and the transmission of the torque steal. Manufacturing north america manufacturing europe head office montreal, canada velan inc. In the 19th century, most steam locomotives used slide. Straightedge parallel bars drafting equipment warehouse. This rotating feature allows the disc to seat in a different position on. Valvtechnologies metalseated parallel slide gate valves are shown in appendix a, figures 1, 2 and 3 fig. Ham mer blow or impact hand wheels are not usually necessary on parallel slide gate valves. Free control valve software download instrumentation tools. During each closing stroke, the two free floating parallel discs are allowed to rotate a few degrees in the plane of the seats. Blackhall taylor valves high pressure steam valves.
Fig 650 parallel slide valves available in a range of sizes. There is international acceptance that where arduous duties with high pressure hot water and steam are concerned the parallel slide isolating gate valve is superior to all forms of wedge gate valves, and to globe stop valves. I have chosen your valves over a recommended ball valve, as it has proven the test of time. A parallel slide gate valve is much less likely to get stuck in the closed position. The valves are shipped in a box or on a pallet in the open position except fail close. Its execellent shutoff performance, brought about by the metaltometal sealing, makes it suitable to a variety of severe services, including emergency shutoffopening at extremely. Imi remosa slide valves are designed for easy maintenance. We currently have 2 of the taylor parallel slide blow down valves in operation since 1980, working nonstop 247 literally from 35 years under pressure and still going, something which is really impressive. A doubledisk parallel gate valve has two parallel disks that are forced. On a parallel slide valve, an external stem guide serves two important functions. Manufactured from both stainless steel and carbon steel.
The wedgeshaped gate valves use two inclined seats and a slightly mismatched inclined gate. Calculation of the pressure surge on closure valve. A wide variety of parallel slide valve options are available to you, such as high pressure, low pressure. They are an alternative to the traditional flex wedge type gate valves. This design of gate valve is commonly used for clean fluids and steam applications. The taylor steam valve range includes the parallel slide gate valve, blow down. Providing tight shutoff under the most severe conditions, this exclusive disk and wedge design resists effects of extreme temperatures, gross thermal transients, high and low differential pressures, and dualphase fluids. This copies a predefined list of bone weights to the current animation. High pressure gate valve assembly animation youtube. A wide variety of parallel slide gate valve options are available to you, such as pressure, power, and material. Features and benefits velan bolted bonnet parallel slide gate valves are ideal for clean service and high temperature steam. The disc slides in contact with the seats, hence the name. Parallel slide valve with spring loaded discs which automatically create a wiping action thus cleaning the seating surface during normal operation.
Every mayline parallel ruling straightedge bar begins with a. Unique parallel slide forged cage unit design comprises all operating parts of the slide discs. The parallel gate valves use a flat gate between two parallel seats, and a popular type is the knife gate valve designed with a sharp edge on the bottom of the gate. But this works only if the valve is manufactured with high precision, which is why such valves find use in bigger, more costly applications, where reliability of true shutoff is mandated. High pressure service pressure seal valve range type approved poyam valves is one of the worlds leading manufacturers of high specification high pressure service pressure seal design gat e, globe. The last specified weightlist option is the one the animation system uses when doing blending. For steam generators that frequently start up and shutdown this is a major issue. This mode of valve operation also imposes some limitations on the use of parallel gate valves. Fluitek orsenigo valves has very extended experience in manufacturing this type of valve. To prevent damage to the stem guide and internal fittings of a parallel slide valve particularly on smaller size and those valves which are electrically.
A parallel slide gate valve generally provides better shut off than a wedge gate. The disc is in two halves, spring loaded, that seat on parallel seat rings. Taylorshaws internationally recognised parallel slide gate valves have proven pedigree, giving exceptional long life and excellent sealing capabilities over many years. If fluid pressure is low, the seating force may be insufficient to.
The valvtechnologies parallel slide gate valve psg addresses the need for true inline valve reparability in large diameter, highenergy piping systems. The parallel gate valve in design pushes the debris off the parallel seals as the valve is shut. Compact expanding gatedouble disc parallel slide api 6dapi 600 steel, outside screw and yoke, rising stem, nonrising handwheel, renewable seats, removable yoke sleeve, gland repacking under pressure. Specifically designed for steam and feedwater applications, the psg provides bidirectional zeroleakage using the ram coating systems. Therefore actuator size can be much smaller for a parallel slide gate valve than for the wedge type. For valve sizes, asme classes and designs not shown below, please consult velan engineering. Industrial hydraulic circuit training with animation. Perfect for engineering and construction applications. High pressure parallel slide gate valve for isolation of steam and condensate in the power generation industry. The image description page explains how this svg animation can be viewed. You can also choose from manual parallel slide valve, as well as from stainless steel parallel slide valve there are 75 suppliers who sells parallel slide valve on, mainly located in asia. Body made of superior strength forgings and optional cast steel. Only at the end of the stroke the disc mechanism ensures the. The program should include at least factory testing of each valve for body and.
Circuit setter plus calibrated balance valves xylem. All body mounting surfaces are cnc machined in order to allow a precise matching of the components during the assembly stage. Cast steel parallel slide valve flanged pn16 leengate. Velan pressure seal parallel slide gate valves are ideal for clean service and steam. Kvt om manual, hifluidic parallel slide gate valve key valve. A gate that can be opened or closed by sliding in supporting guides. The valve is fitted with a backseating device to further protect. Animation double disc slab gate valve 720p youtube.
359 547 1356 305 321 496 403 845 968 23 1152 900 1052 311 1144 1240 346 908 569 568 1274 365 252 1150 69 1154 1135 1247 1478 974 735 544 779 1497 746 325 917 1470 833 917 62 402 776 916 1114 434 917