Not only does this help in smooth functioning, but also ensures costeffectiveness. Pipe size thread type fitting type pipe size thread type length material pipe schedule pressure rating unilok nace pipe fittings p hrn 08 n 04 n ss pipe size. For proper installation of the plumbing system in a building, various types of. Identification of equipment identification by type. Valves guide valves are mechanical devices that controls the flow. Each of the tables has the valves and fittings at different c values. If control components are not properly selected, the entire system will fail to deliver the required output. Components include pipe, fittings, flanges, gaskets, bolting, valves and. A flange joint is a plate or ring to form a rim at the end of a pipe when fastened to the pipe. Types of loads piping systems experience different types of loadings, categorized into three basic loading types sustained, thermal and occasional loads. While they all perform the same function of connecting the valve into the piping system and allowing it to perform its function, each connection type has its own pros and cons.
Manual, hydraulic, pneumatic, and electric actuation. This can apply to the control valve itself relative to the piping. This section applies to the design and installation of pipe, pipe fittings, valves, piping accessories and. Make sure that the valve or fitting you add to the pipeline is for the specific c value of the pipe material. Valves are used to stop and regulate the flow of water, and each type of valve has its pros and cons and applications for which it is best suited. Piping codes, valve standards and ball valve selection. Wolseley industrial group is the leading north american supplier of pipe, valves and fittings pvf. Chapter 4 describes digital valve controllers, analog positioners, boosters, and other control valve accessories. Piping standard nominal pipe diameter schedule number piping standards code tubes fittings and other piping auxiliaries 3. This is when the piping requirements are defined such as desired working pressure, maximum pressure, maximum flow rate, acceptable pressure drops and classification requirements.
Pipe, valves and fittings pvf wolseley industrial group. Gate valves are linear motion devices used open and close. Nipples are used for connecting pipe, hoses, and valves. We have achieved exclusive, master or preferred distributor status.
All individuals involved in the joining pe pipe systems, whether it be using. Ball valve, butterfly valve, plug valve, spherical valve. Basic caepipe, pipe stress analysis software piping. Close throttling creates excess noise, vibration and possible damage to valves and piping. The initial cost is impacted by the diameter and layout of the piping. Check valves are designed to pass flow in one direction with minimum resistance and to prevent reverse or back flow with minimal leakage.
The following article will cover the general mechanism and function of the most typical of these valves used in steam systems, such as ball valves, butterfly valves, globe valves, gate valves, and diaphragm valves according to jis, a valve is defined as. Chapter 9 pe pipe joining procedures plastics pipe institute. The nfpa 15 standard has equivalent lengths for valves and fittings based on the type of valve or fitting and the pipe size. Butterfly valve butterfly valve and globe valve butterfly valve and ball valve butterfly valve and gate valve check valve gate valve globe valve ball valve valve shaped like a. Valves shall conform to standards and specifications referenced in this code and shall be used only in accordance with the service recommendations of the manufacturer. The principal types of check valves used are the teepattern lift check, the swing check, the tiltingdisc check, the wyepattern lift check, and the ball check, illustrated in figs. This specification for piping and valves forms part of icon waters suite of design. Control components in hydraulic system one of the most important functions in any fluid power system is control. Types of manual valves tlv a steam specialist company. Check valves types, construction, applications and. A pipe is a tubular section or hollow cylinder, usually but not necessarily of circular. Not to be confused with choke valves used in industrial flow control. The valves and fittings ceu training course uses a multiple choice type answer key.
Plug valves are used as quick opening valves in gas supply lines, low pressure steam lines, water treatment plants, pulp and paper, and chemical industries. Diaphragm valves commonly known as a saunders, after a popular brand name work on the principle of a rubber diaphragm or bladder opening and closing. This type is the most used in piping and pipeline applications. A piping system includes all ammonia refrigerant piping and fittings, hand valves, control valves and other devices that are inclusive to the refrigeration lines. Variety of valves are used depending on main function, fluid type and other operating parameters.
Fittings and valves are of steel and are of two types, butt weld and socket weld. Gaskets are made as per by construction, materials and features. In piping following types of valves are used depending on the requirements. Classification of valves used in piping systems valves exceed any other piping component. Saunders valves are ideal for restrictive or flow control duties ie valve half closed to reduce flowrate. Important gaskets used are nonmetallic, spiralwound and ringjoint type fig. The general purpose of the piping identification and valve tagging standard is to provide a series of guidelines for contractors, aes and fm employees to adhere to or follow when labeling piping and tagging valves which are located on the campus of cmu. This makes globe valves particularly suitable for services which require frequent valve maintenance. This type of valve has seats in a plane parallel or inclined to the line of flow.
Elements for the control of energy and other control in fluid power system are generally called valves. Valves 4 size and larger used for controlling water flow at pumps and at equipment, and for bypass control shall be lubricated plug type. A numerical designation of size which is common to all components in a piping system other. June 27, 2012 in blog, pipes valves and fittings by tim walshauser. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Different types of valves used in piping a complete. The following part number, phrn08n04nssis designated for reducing hex nipple, 12 mnpt x 14 mnpt, 316ss. The three common types of couplings are straight coupling, reducer, and eccentric reducer. Valves 4 and larger shall be high performance butterfly type. The cost of valve in the piping system is up to 20 to 30% of the overall piping cost. All bypass or flow control valves in steam piping shall be globe type.
In the case of welded fittings made of pipes, please note that reduction factors may apply depending on the type of fitting. Unlined soft seated butterfly valves and plug valves, if required to be fire safe shall be in accordance with api 607. Unilok pipe fittings are ordered by part number as shown as below. Chapter 5 is a comprehensive guide to selecting the best control valve for an application. Piping piping symbol legend circulator w isolation flanges gate valve globe valve ball valve swingcheck valve flowcheck valve springloaded check valve hose bib boiler drain thermostatic radiator valve trv straight circuit setter manual 3way valve zone valve air separator backflow preventer diaphragm type expansion tank pressure. It should be noted that globe and gate valves will often be depicted by the same valve symbol. Maintenance of globe valves is relatively easy, as the discs and seats are readily refurbished or replaced. Mechanical piping systems general product catalog victaulic. They are essential components of a piping system that conveys liquids, gases, vapors, slurries etc different types of valves are available.
Most valves in a residential plumbing system are part of the water supply system and are used to control the flow of pressurized water from the water utility or a private well. The butt weld fittings are of the same dimension as the pipe, and the socket weld fittings have enlarged ends similar to threaded fittings, but the pipe slips into place and is fillet welded. Pipe supports, hangers, brackets or other piping accessories are not considered part of the piping system. There are quite a few different types of connections used to install valves and other process components in piping of process systems. Plug, type s soft seal 2 2 general operating instructions using a positivepressure gas with our plastic piping may pose a dangerous condition due to the repellent force particular to compressible fluids. We supply an extensive range of industrial markets with broad pipe fitting requirements for plumbing valve types. A multitude of valve types and designs safely accommodate a wide variety of industrial applications. Pipe insulation is also considered part of the piping system. They are mechanical seals, generally ringshaped type and fitted for sealing flange joints.
All pipes, valves and equipment in mechanical rooms, shafts, ceilings and other spaces accessible to maintenance personnel must be identified with colorcoded bands and permanent tags indicating the system type and direction of flow for piping systems or type and number for equipment. Deadweight is from the weight of pipes, fittings, components such as valves. While joining two pipes in the same length, collar is used. Many different types of manual valves are used in industrial applications worldwide. Manual for the selection and application of protective coatings. A valve is simply a device that directs or regulates flow by opening, closing or partially obstructing passageways. It is recommended that you download this pdf document and assignment to your. The straight coupling is for joining two lengths of pipe in a. Estimates reveal that a substantial portion, approximately 810%, of the total capital expenditure of the chemical process industry is used for the procurement of valves. When joining a pe flange adapter or stub end to a flanged butterfly valve, the inside. Chapter 6 addresses the selection and use of special control valves. Relieving component or piping over pressure there are many valve designs and types that satisfy one or more of the functions identified above. Piping valves and accessories uw facilities university of. Types of pipe fittings used in piping a complete guide.
In the case of steam piping, it is necessary to constantly drain any condensate from the lines. Valves for hvac piping columbia university facilities. Partial penetration welds for the joining of pipe and fittings etc. Nfpa valves and fittings tables engineered software.
Choke valve, butterfly valve used to limit air intake in internal combustion engine. Method of joining sections threaded bell and spigot flanged welded connection fitting 4. The pressure drop in the piping must be minimized to avoid adversely affecting performance and capacity. Sustained loads these mainly consist of internal pressure and deadweight. Valves has different symbols and types for different purpose. And the cost of a given type and size of the valve can vary 100%. The pressure drop across this valve when it is in the wide open position is very low.
The advantage of using gate valves is that, in the fully open position, they offer almost no resistance to flow. Common valve types gate valve the gate valve is the mostpopular style in the world for flow control. The supporting arrangement must be designed to carry the weight of the pipe, valves, fittings and insulation plus the weight of the fluid contained within the pipe. The two types of pipes produced through these technologies are longitudinalsubmerged arcwelded lsaw and. A style of valve trim where the flow passes through a multiple of orifices in parallel or in series. Good piping design results in a balance between the initial cost, pressure drop, and system reliability. Globe valves types, construction, applications and.
Engineering symbology, prints, and drawings module 2. It means that if you choose ball valve over butterfly valve for the same function. Regardless of type, all valves have the following basic parts. The hydraulic piping standard handbook assists in the above mentioned engineering process by providing relevant information and standards for this project input phase.
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