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eLibrary >
BS EN ISO 15761:2002 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries >
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BS EN ISO 15761:2002 Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum and natural gas industries, 2003
- 30018536.pdf [Go to Page]
- iso30087791.pdf [Go to Page]
- TitlePage - Steel gate, globe and check valves for sizes DN 100 and smaller, for the petroleum an...
- TableofContent - Contents Page
- Foreword - Foreword
- Introduction - Introduction [Go to Page]
- Scope - 1��� Scope
- NormativeReference - 2��� Normative references
- Clause1 - 4��� Pressure/temperature ratings [Go to Page]
- Subclause2 - 4.1��� Valve ratings [Go to Page]
- Subclause3 - 4.1.1��� Applicability
- Subclause3 - 4.1.2��� Interpolated ratings
- Subclause2 - 4.2��� Temperature constraints [Go to Page]
- UntitledSubclause3 - 4.2.1��� The temperature for a corresponding pressure rating is the maximum ...
- UntitledSubclause3 - 4.2.2��� Restrictions of temperature and pressure, for example those imposed...
- UntitledSubclause3 - 4.2.3��� For temperatures below the lowest temperature listed in the pressur...
- Clause1 - 5��� Design [Go to Page]
- Subclause2 - 5.1��� Reference design [Go to Page]
- UntitledSubclause3 - 5.1.1��� The reference design (the design to be provided when the purchaser ...
- UntitledSubclause3 - 5.1.2��� Other configurations and types of material may be provided when spe...
- Subclause2 - 5.2��� Flow passageway [Go to Page]
- UntitledSubclause3 - 5.2.1��� The flow passageway includes the seat opening and the body ports le...
- UntitledSubclause3 - 5.2.2��� The minimum cross-sectional area requirement for the flow passagewa...
- Subclause2 - 5.3��� Wall thickness [Go to Page]
- UntitledSubclause3 - 5.3.1��� Minimum wall thickness values for valve bodies and bonnets are give...
- UntitledSubclause3 - 5.3.2��� The valve-body specified minimum wall thickness, except for the val...
- UntitledSubclause3 - 5.3.3��� The bonnet specified minimum wall thickness for gate or globe valve...
- Subclause2 - 5.4��� Valve body [Go to Page]
- Subclause3 - 5.4.1��� General
- Subclause3 - 5.4.2��� Socket-welding ends [Go to Page]
- UntitledSubclause4 - 5.4.2.1��� The socket bore axis shall coincide with the end entry axis. Sock...
- UntitledSubclause4 - 5.4.2.2��� The minimum socket wall thickness, extending over the full socket...
- UntitledSubclause4 - 5.4.2.3��� End-to-end dimensions for socket welding end valves shall be esta...
- Subclause3 - 5.4.3��� Threaded ends [Go to Page]
- UntitledSubclause4 - 5.4.3.1��� The threaded end thread axis shall coincide with the end entry ax...
- UntitledSubclause4 - 5.4.3.2��� The end threads shall be taper pipe threads meeting the requireme...
- UntitledSubclause4 - 5.4.3.3��� Threads shall be gauged in accordance with
- UntitledSubclause4 - 5.4.3.4��� End-to-end dimensions for threaded end valves shall be establishe...
- Subclause3 - 5.4.4��� Flanged ends [Go to Page]
- UntitledSubclause4 - 5.4.4.1��� End flanges shall comply with the dimensional requirements of ASM...
- UntitledSubclause4 - 5.4.4.2��� End flanges and bonnet flanges shall be cast or forged integral w...
- UntitledSubclause4 - 5.4.4.3��� Face-to-face dimensions for flanged end valves, Class�150, Class�...
- Subclause3 - 5.4.5��� Butt-welding ends [Go to Page]
- UntitledSubclause4 - 5.4.5.1��� Unless otherwise specified by the purchaser, butt-welding ends sh...
- UntitledSubclause4 - 5.4.5.2��� End-to-end dimensions for butt-welding end valves shall be establ...
- Subclause3 - 5.4.6��� Body seats [Go to Page]
- UntitledSubclause4 - 5.4.6.1��� Integral body seats are permitted in austenitic stainless steel b...
- UntitledSubclause4 - 5.4.6.2��� Except as provided in
- UntitledSubclause4 - 5.4.6.3��� The inside diameter of the body seat flow passageway shall be in ...
- Subclause2 - 5.5��� Valve bonnet or cover [Go to Page]
- UntitledSubclause3 - 5.5.1��� The bonnet of a gate or globe valve or the cover of a check valve s...
- UntitledSubclause3 - 5.5.2��� Gasketed joints shall be of a design that confines the gasket and p...
- UntitledSubclause3 - 5.5.3��� Bonnet flange gaskets, unless otherwise specified by the purchaser,...
- UntitledSubclause3 - 5.5.4��� Bonnet and body flange bolting bearing surfaces shall be parallel t...
- UntitledSubclause3 - 5.5.5��� A bolted bonnet or cover to the body joint shall be secured by a mi...
- UntitledSubclause3 - 5.5.6��� The bolting shall, as a minimum, meet the following bolt cross-sect...
- UntitledSubclause3 - 5.5.7��� Threaded pressure-retaining joints shall, as a minimum, meet the fo...
- UntitledSubclause3 - 5.5.8��� Bonnets welded directly to valve bodies shall be secured by a full ...
- Subclause2 - 5.6��� Obturator [Go to Page]
- Subclause3 - 5.6.1��� Seating surfaces
- Subclause3 - 5.6.2��� Gate valve obturators [Go to Page]
- UntitledSubclause4 - 5.6.2.1��� Gate valves shall be provided with a one-piece wedge gate. The in...
- UntitledSubclause4 - 5.6.2.2��� A slot near the top of the wedge gate shall be provided to receiv...
- UntitledSubclause4 - 5.6.2.3��� The wedge gate shall be designed to account for seat wear. The di...
- Subclause3 - 5.6.3��� Globe valve obturators [Go to Page]
- UntitledSubclause4 - 5.6.3.1��� Globe valves shall be provided with disks that are non-integral w...
- UntitledSubclause4 - 5.6.3.2��� When assembled, the globe valve disk-to-stem retaining design sha...
- Subclause3 - 5.6.4��� Check valve obturators [Go to Page]
- UntitledSubclause4 - 5.6.4.1��� Check valves shall be provided with either piston, ball or swing ...
- UntitledSubclause4 - 5.6.4.2��� Piston type and ball type check valve obturators shall be guided ...
- UntitledSubclause4 - 5.6.4.3��� Piston check and ball check valves shall be designed so that, whe...
- UntitledSubclause4 - 5.6.4.4��� Obturator-to-hinge retaining nuts shall be positively secured by ...
- Subclause2 - 5.7��� Stem [Go to Page]
- UntitledSubclause3 - 5.7.1��� Stems are designated as either inside screw (ISRS) or outside screw...
- UntitledSubclause3 - 5.7.2��� The minimum stem diameter,
- UntitledSubclause3 - 5.7.3��� The stem shall be one-piece wrought material. Stems fabricated by w...
- UntitledSubclause3 - 5.7.4��� The stem threads shall be of trapezoidal form in accordance with
- UntitledSubclause3 - 5.7.5��� The means of stem-to-obturator attachment shall be designed so as t...
- UntitledSubclause3 - 5.7.6��� Valve stems, except those used in globe valves where the backseat f...
- UntitledSubclause3 - 5.7.7��� Gate valve stem design shall be such that, for valves with outside ...
- UntitledSubclause3 - 5.7.8��� The means of stem disk attachment in globe valves shall be such tha...
- Subclause2 - 5.8��� Stem nut or stem bushing [Go to Page]
- UntitledSubclause3 - 5.8.1��� The internal thread in the stem nut (yoke sleeve or stem bushing) s...
- UntitledSubclause3 - 5.8.2��� The fixed stem nut used in globe valves shall be threaded or otherw...
- Subclause2 - 5.9��� Packing, packing chamber and gland [Go to Page]
- UntitledSubclause3 - 5.9.1��� The minimum uncompressed total height of the installed packing,
- UntitledSubclause3 - 5.9.2��� The packing chamber bore shall have a surface finish,
- UntitledSubclause3 - 5.9.3��� A gland shall be provided for packing compression. The gland may be...
- UntitledSubclause3 - 5.9.4��� Packing in the form of a single-piece spiral shall not be used.
- Subclause2 - 5.10��� Packing retention [Go to Page]
- UntitledSubclause3 - 5.10.1��� Packing and packing gland retention for valves with outside screw ...
- UntitledSubclause3 - 5.10.2��� Gland flange bolts shall be hinged eyebolts, headed bolts, stud bo...
- UntitledSubclause3 - 5.10.3��� The gland bolting for gate and globe valves shall not be anchored ...
- UntitledSubclause3 - 5.10.4��� Packing and packing gland retention for valves with inside screw s...
- Subclause2 - 5.11��� Hand wheel [Go to Page]
- UntitledSubclause3 - 5.11.1��� Gate and globe valves shall be supplied with direct operated hand ...
- UntitledSubclause3 - 5.11.2��� The hand wheel shall be a spoke and rim design that makes an effec...
- UntitledSubclause3 - 5.11.3��� The hand wheel shall be secured to the stem or stem nut by a threa...
- Clause1 - 6��� Materials [Go to Page]
- Subclause2 - 6.1��� Trim materials [Go to Page]
- UntitledSubclause3 - 6.1.1��� Trim items include the stem, the obturator seat surfaces and the bo...
- UntitledSubclause3 - 6.1.2��� Trims of free machining grades of 13Cr steel (grades containing add...
- UntitledSubclause3 - 6.1.3��� The trim material shall be the manufacturer's standard trim materia...
- Subclause2 - 6.2��� Materials other than trim [Go to Page]
- UntitledSubclause3 - 6.2.1��� Materials for valve parts other than trim items shall be in accorda...
- UntitledSubclause3 - 6.2.2��� Defects in the cast or forged valve pressure shell materials reveal...
- UntitledSubclause3 - 6.2.3��� Fabrication welding operations shall be performed by qualified weld...
- Clause1 - 7��� Marking [Go to Page]
- Subclause2 - 7.1��� Legibility
- Subclause2 - 7.2��� Body marking [Go to Page]
- UntitledSubclause3 - 7.2.1��� Valve bodies shall be marked with the following information:
- UntitledSubclause3 - 7.2.2��� For valves
- Subclause2 - 7.3��� Ring joint groove marking
- Subclause2 - 7.4��� Identification plate marking
- Clause1 - 8��� Testing and inspection [Go to Page]
- Subclause2 - 8.1��� Pressure tests [Go to Page]
- Subclause3 - 8.1.1��� General [Go to Page]
- UntitledSubclause4 - 8.1.1.1��� Each assembled valve identified with
- UntitledSubclause4 - 8.1.1.2��� When water is used as the test fluid for pressure testing austeni...
- Subclause3 - 8.1.2��� Shell test [Go to Page]
- UntitledSubclause4 - 8.1.2.1��� The shell test for each valve shall be at a pressure no less than...
- UntitledSubclause4 - 8.1.2.2��� Paint or other coating materials capable of concealing leakage du...
- UntitledSubclause4 - 8.1.2.3��� The minimum period of time that the shell test pressure is to be ...
- UntitledSubclause4 - 8.1.2.4��� Over the duration of the shell test there shall be no visually de...
- Subclause3 - 8.1.3��� Closure leakage test [Go to Page]
- UntitledSubclause4 - 8.1.3.1��� For each gate valve, the closure test shall be a gas test with th...
- UntitledSubclause4 - 8.1.3.2��� For each check valve and globe valve the closure test shall be a ...
- UntitledSubclause4 - 8.1.3.3��� Gate and globe valve stem packing shall be adjusted so that there...
- UntitledSubclause4 - 8.1.3.4��� The minimum period of time that the test pressure is to be sustai...
- UntitledSubclause4 - 8.1.3.5��� Over the duration of the closure test, the maximum permitted seat...
- UntitledSubclause4 - 8.1.3.6��� When volumetric devices are used to measure seat leakage rates th...
- UntitledSubclause4 - 8.1.3.7��� Gate valves, for which only a low pressure gas test is specified,...
- Subclause3 - 8.1.4��� Optional closure leakage test for gate valves
- Subclause3 - 8.1.5��� Backseat leakage test [Go to Page]
- UntitledSubclause4 - 8.1.5.1��� The backseat test for gate and globe valves shall be either a gas...
- UntitledSubclause4 - 8.1.5.2��� The stem backseat shall be engaged and the packing gland bolting ...
- UntitledSubclause4 - 8.1.5.3��� The gland bolting or packing nut shall be re-tightened following ...
- Subclause2 - 8.2��� Inspection
- Clause1 - 9��� Preparation for despatch [Go to Page]
- UntitledSubclause2 - 9.1��� After testing, the test fluid shall be drained from each valve in pre...
- UntitledSubclause2 - 9.2��� Stem packing shall be in place and the remaining packing adjustment, ...
- UntitledSubclause2 - 9.3��� Except for austenitic stainless steel valves, unmachined exterior val...
- UntitledSubclause2 - 9.4��� Except for austenitic stainless steel valves, machined or threaded su...
- UntitledSubclause2 - 9.5��� Protective covers or caps of wood, wood fibre, plastic or metal shall...
- UntitledSubclause2 - 9.6��� Protective end plugs of wood, wood fibre, plastic or metal shall be s...
- UntitledSubclause2 - 9.7��� At the time of shipment, the obturator of a gate or a globe valve sha...
- UntitledSubclause2 - 9.8��� When special packaging is necessary, the purchaser shall specify the ...
- AnnexNormative - Requirements for extended body gate valve bodies [Go to Page]
- Clause1 - A.1��� Scope
- Clause1 - A.2��� Applicability [Go to Page]
- UntitledSubclause2 - A.2.1��� Extensions with external taper pipe threads are designated only for...
- UntitledSubclause2 - A.2.2��� Extensions with external weld end preparations are designated only ...
- UntitledSubclause2 - A.2.3��� Internal socket welding ends or internal taper pipe thread ends are...
- UntitledSubclause2 - A.2.4��� Extended bodies covered by
- Clause1 - A.3��� Body configuration [Go to Page]
- Subclause2 - A.3.1��� Extension length
- Subclause2 - A.3.2��� Extensions having threaded ends
- Subclause2 - A.3.3��� Extensions having welding ends
- Clause1 - A.4��� Materials
- Clause1 - A.5��� Body extension construction [Go to Page]
- UntitledSubclause2 - A.5.1��� An extension shall be either cast or forged integral with the valve...
- UntitledSubclause2 - A.5.2��� Integral alignment rings (centring backing rings) used to facilitat...
- UntitledSubclause2 - A.5.3��� The final wall thickness of the extension attachment weld shall not...
- UntitledSubclause2 - A.5.4��� The body-to-extension weld shall be given a post-weld heat treatmen...
- UntitledSubclause2 - A.5.5��� The finished weld shall be free of cracks and shall show no indicat...
- Clause1 - A.6��� Marking
- AnnexNormative - Requirements for valves with bellows stem seals [Go to Page]
- Clause1 - B.1��� Scope
- Clause1 - B.2��� Design [Go to Page]
- UntitledSubclause2 - B.2.1��� Bellows stem seals do not eliminate the need for providing the stem...
- UntitledSubclause2 - B.2.2��� One end of the bellows shall be attached to the stem just above the...
- UntitledSubclause2 - B.2.3��� Stems in bellows-equipped valves shall be provided with the means t...
- UntitledSubclause2 - B.2.4��� Valve-to-bellows assemblies shall be designed so that the bellows c...
- Clause1 - B.3��� Pressure-temperature ratings [Go to Page]
- UntitledSubclause2 - B.3.1��� The bellows assembly for a bellows stem seal valve shall be designe...
- UntitledSubclause2 - B.3.2��� For fluid service above
- UntitledSubclause2 - B.3.3��� Restrictions of temperature or pressure imposed by the bellows asse...
- UntitledSubclause2 - B.3.4��� A bellows stem seal valve shall be limited to applications where te...
- Clause1 - B.4��� Extensions for bellows enclosure [Go to Page]
- UntitledSubclause2 - B.4.1��� The cylindrical bonnet or body extension required to enclose a bell...
- UntitledSubclause2 - B.4.2��� The bonnet or body extension that envelops the bellows shall be int...
- UntitledSubclause2 - B.4.3��� The weld for an extension that is welded directly to the bonnet or ...
- Clause1 - B.5��� Type testing [Go to Page]
- UntitledSubclause2 - B.5.1��� The adequacy of each design of bellows and its means of attachment,...
- UntitledSubclause2 - B.5.2��� A bellows assembly design change that alters cyclic life demonstrat...
- UntitledSubclause2 - B.5.3��� When the bellows or bellows assembly manufacturer is changed, or th...
- UntitledSubclause2 - B.5.4��� A change in the number of convolutions of a qualified bellows (incr...
- UntitledSubclause2 - B.5.5��� A bellows valve shall be designed such that the qualified extension...
- Clause1 - B.6��� Materials [Go to Page]
- UntitledSubclause2 - B.6.1��� Some services may require special bellows materials. When specified...
- UntitledSubclause2 - B.6.2��� Fabrication welding operations related to bellows or bellows assemb...
- UntitledSubclause2 - B.6.3��� Bellows assemblies, as received from the bellows manufacturer, shal...
- Clause1 - B.7��� Pressure tests [Go to Page]
- UntitledSubclause2 - B.7.1��� Prior to assembly, each bellows or bellows assembly shall be tested...
- UntitledSubclause2 - B.7.2��� Pressure tests for bellows stem seal valves, with the manufacturer ...
- UntitledSubclause2 - B.7.3��� When water is used as the test fluid for pressure testing valves ha...
- UntitledSubclause2 - B.7.4��� A backseat test is not required for a valve with a bellows stem seal.
- Clause1 - B.8��� Marking [Go to Page]
- UntitledSubclause2 - B.8.1��� Each bellows assembly shall have a material identification marking.
- UntitledSubclause2 - B.8.2��� The bellows material marking shall appear on the valve identificati...
- Clause1 - B.9��� Preparation for despatch
- AnnexNormative - Type testing of bellows stem seals [Go to Page]
- Clause1 - C.1��� Scope
- Clause1 - C.2��� General requirements [Go to Page]
- UntitledSubclause2 - C.2.1��� The bellows is the expandable metal part that acts as the initial s...
- UntitledSubclause2 - C.2.2��� Each bellows assembly design and each bellows material shall be qua...
- UntitledSubclause2 - C.2.3��� A successful qualification requires that three bellows assemblies o...
- Clause1 - C.3��� Test procedure [Go to Page]
- Subclause2 - C.3.1��� Pre-test examination [Go to Page]
- UntitledSubclause3 - C.3.1.1��� The bellows assemblies to be tested shall be clean.
- UntitledSubclause3 - C.3.1.2��� The unrestrained (free) height of each bellows shall be measured ...
- UntitledSubclause3 - C.3.1.3��� All bellows assembly welds shall be examined using a liquid dye p...
- UntitledSubclause3 - C.3.1.4��� Each bellows assembly shall be subjected to a helium leakage test...
- Subclause2 - C.3.2��� Pressure test [Go to Page]
- UntitledSubclause3 - C.3.2.1��� Each bellows assembly shall be pressure tested.
- UntitledSubclause3 - C.3.2.2��� The pressure test fluid shall be water containing less than
- UntitledSubclause3 - C.3.2.3��� For the pressure test, the bellows shall be positioned at its ext...
- UntitledSubclause3 - C.3.2.4��� The test fluid pressure shall be applied in the same direction (e...
- UntitledSubclause3 - C.3.2.5��� The test fluid pressure shall be not less than 1,5�times the rate...
- UntitledSubclause3 - C.3.2.6��� The minimum pressure test duration shall be
- UntitledSubclause3 - C.3.2.7��� Any visually detectable leakage over the test duration shall be c...
- Subclause2 - C.3.3��� Cycle test [Go to Page]
- UntitledSubclause3 - C.3.3.1��� Each bellows assembly shall be cycle tested.
- UntitledSubclause3 - C.3.3.2��� For the cycle test, the bellows assembly shall be installed in ei...
- UntitledSubclause3 - C.3.3.3��� The frequency of cycling shall not exceed one cycle per second.
- UntitledSubclause3 - C.3.3.4��� One complete cycle is defined as movement of the bellows from the...
- UntitledSubclause3 - C.3.3.5��� The ambient cycle test cycling shall be carried out at ambient te...
- UntitledSubclause3 - C.3.3.6��� Water containing less than
- UntitledSubclause3 - C.3.3.7��� The minimum number of test cycles required for qualification for ...
- Subclause2 - C.3.4��� Post test examination [Go to Page]
- UntitledSubclause3 - C.3.4.1��� Upon completion of the cycle test, repeat the liquid dye penetran...
- UntitledSubclause3 - C.3.4.2��� After the liquid dye penetrant examination, each bellows assembly...
- UntitledSubclause3 - C.3.4.3��� Any detectable leakage either from the bellows or the bellows ass...
- Clause1 - C.4��� Acceptability
- Clause1 - C.5��� Test report
- AnnexInformative - Identification of valve parts
- AnnexInformative - Information to be specified by the purchaser
- Bibliography - Bibliography [Go to Page]
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