WordNet

faucet consisting of a rotating device for regulating flow of a liquid (同)cock, turncock
tilt or slant to one side; "cock ones head"
adult male chicken (同)rooster
adult male bird
obscene terms for penis (同)prick, dick, shaft, pecker, peter, tool, putz
set the trigger of a firearm back for firing

PrepTutorEJDIC

コックのせん(turncock)
『おんどり』(《米》rooster) / (ガス・水道・たるなどの)『せん』,コック / 《複合語を作って》「(にわとり以外の鳥の)雄,雄鳥」の意を表す / (おんどり形の)風見(かざみ)(weathercock) / (おんどりのように威張っている)親分,大将 / (銃の)撃鉄,打ち金(がね);撃銃を引いた状態 / (気どって帽子のへりなどを)上にそらすこと;上目使い / 《英話》(男どうしの会話で)おい君 / 《禁句》陰茎 / (気どって意味ありげに)〈人が〉〈帽子・頭・麦など〉'を'上に向ける;〈馬・箕などが〉〈耳〉'を'ぴんと立てる《+『up』+『名』,+『名』+『up』》 / 〈銃〉‘の'撃鉄を引く,打ち起こす
(干し草などの)円すい形の山 / …'を'円すい形に積み上げる

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/06/27 23:06:44」(JST)

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[Wiki en表示]

A cast-iron City of Birmingham stopcock cover, on the boundary of a residential property, from the time when the City Council was responsible for the supply of drinking water.

A stopcock in the open position, connected to the oil bubbler via a short hose

A stopcock on a steam engine

A stopcock is a valve used to restrict or isolate the flow of a liquid or gas through a pipe.

In the United Kingdom a stopcock, not to be confused with a gate valve or a DiCiaccio branch, is used to prevent flow of water into a domestic water system. There are usually two stopcocks for a home. One is usually found just outside the property boundary and can be used to isolate the building from the water supply. The other is inside the property where the supply enters the property. These valves are provided to allow maintenance and prevent flooding if the domestic water system is pierced.

The domestic stopcock was designed over 100 years ago, traditionally the position of the valve would be in the kitchen of the premises. Recently insurance companies have insisted that the homeowner is required to maintain the device that is fitted to the property. It is by regulation that each property in the UK should have one fitted. It is estimated that only one person in three knows where their internal stopcock is situated, and recently insurance premiums and excesses applied to policies have increased to reflect the damage caused to household contents through the none controlled escape of water.

Laboratory glassware[edit]

For laboratory glassware, items sometimes have plug valves with conically-tapered inserts called stopcocks (sometimes referred to as "plugs" by laypeople) with different bores. The valve bodies are usually made of glass, while the plugs are made of glass or Teflon. You also can find valves with Teflon spindle (for example one way valves or angled valves) When the plug is made of glass, the handle and plug are fused together in one piece out of glass. When both valve body and plug are made of glass, grease is usually used to give a good seal, as well as to prevent the valve from seizing and subsequently cracking.

Special stopcocks are available, such as a double-oblique design used in Schlenk lines which permit the application of inert gas and vacuum from the same stopcock.

Stopcocks are often parts of laboratory glassware such as burettes, separatory funnels, Schlenk flasks, and columns used for column chromatography. The stopcock is a smooth tampered plug or rotor with a handle, which fits into a corresponding ground glass female joint. The stationary female joint is designed such that it joins two or more pieces of glass tubing. The stopcock has holes bored through it which allow the tubes attached to the female joint to be connected or separated with partial turns of the stopcock. Most stopcocks are solid pieces with linear bores although some are hollow with holes to simple holes that can line up the joints tubing. The stopcock is held together with the female joint with a metal spring, plastic plug retainer, a washer and nut system, or in some cases vacuum. Stopcocks plugs are generally made out of ground glass or an inert plastic like PTFE. The ground glass stopcocks are greased to create an airtight seal and prevent the glass from fusing. The plastic stopcocks are at most lightly oiled.

Stopcocks are generally available individually with some length of glass tubing at the ports so that they can be joined by a glass blower into custom apparatus at the point of use. This is especially common for the large glass manifolds used in high vacuum lines. Many additional variations exist in both plug boring and joint assembly.

Types

1-, 2- and 3-way stopcocks
3-way-stopcocks acc. to Czako
Needle valve stopcocks straight or right-angled
Burette stopcocks straight or lateral
Desiccator stopcocks
Vacuum stopcocks one-way straight or parallel, one-way right-angled or 2-way

Gallery[edit]

A straight bore plastic stopcock without the female joint. Note its washer and nut system for attaching to its female joint.
A T-bore glass stopcock in a three way assembly. Two of the outlets end in plain hose adapters while the third ends in a male 14/20 ground glass joint. This stopcock is attached with an easily removed metal spring.
A double oblique bore glass three-way stopcock.
A single hole hollow glass stopcock held in place by vacuum.

UpToDate Contents

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English Journal

Stopcock contamination: the source does not explain it all.

Zingg W, Pittet D.SourceInfection Control Program, University of Geneva Hospitals, 4 Rue Gabrielle Perret-Gentil, 1211 Geneva 14, Switzerland. didier.pittet@hcuge.c.
Anesthesia and analgesia.Anesth Analg.2012 Jun;114(6):1151-2.
PMID 22615441

Multiple reservoirs contribute to intraoperative bacterial transmission.

Loftus RW, Brown JR, Koff MD, Reddy S, Heard SO, Patel HM, Fernandez PG, Beach ML, Corwin HL, Jensen JT, Kispert D, Huysman B, Dodds TM, Ruoff KL, Yeager MP.SourceDartmouth-Hitchcock Medical Center, 1 Medical Center Dr., Lebanon, NH 03756. randy.loftus@hitchcock.or.
Anesthesia and analgesia.Anesth Analg.2012 Jun;114(6):1236-48. Epub 2012 Mar 30.
BACKGROUND: Intraoperative stopcock contamination is a frequent event associated with increased patient mortality. In the current study we examined the relative contributions of anesthesia provider hands, the patient, and the patient environment to stopcock contamination. Our secondary aims were to
PMID 22467892

Postpartum Hemorrhage Treated with Gelfoam Slurry Embolization Using the Superselective Technique: Immediate Results and 1-Month MRI Follow-up.

Pellerin O, Bats AS, Di Primio M, Palomera-Ricco A, Pinot de Villechenon G, Fournier L, Pagny JY, Beyssen B, Louail B, Lécuru F, Sapoval M.SourceInterventional Radiology Department, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Médecine - Assistance Publique-Hôpitaux de Paris - Hôpital Européen Georges-Pompidou, Paris, France, 20 Rue Leblanc, 75908, Paris CEDEX 15, France, olivier.pellerin@egp.aphp.fr.
Cardiovascular and interventional radiology.Cardiovasc Intervent Radiol.2012 Feb 11. [Epub ahead of print]
PURPOSE: To evaluate the efficacy and safety of superselective embolization of the uterine arteries in a postpartum hemorrhage.MATERIALS AND METHODS: Between November 2004 and January 2011, a total of 44 consecutive women (median ± standard deviation age 34 ± 3 years, range 23-41 years) were
PMID 22327604

Japanese Journal

Simple and cost effective apparatus for silver staining of polyacrylamide gels with sequential reagents addition and real time monitoring(METHODS)

Journal of bioscience and bioengineering 117(6), 769-774, 2014-06
NAID 110009823165

ガス栓の空気抜き孔用ビスが外れたことによる火災

火災 63(3), 51-54, 2013-06-20
NAID 10031183347

Compatibility of Heparin Sodium in Intravenous Line with Nicardipine Injected from a Side Tube via T-shape Stopcock

医療薬学 38(11), 679-687, 2012
NAID 130004894789

砂泥堆積物中溶存硫化物の簡便な現場抽出/吸光光度定量及びその有明海北東部堆積物への適用

分析化学 = Japan analyst 59(12), 1155-1161, 2010-12-05
NAID 10026969219

Related Pictures

★リンクテーブル★

リンク元	「cock」「コック」「二方活栓」「二方コック」
拡張検索	「T-shape stopcock」「three-way stopcock」「straight stopcock」