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Compared check valve Uomo Nike Air Max 97 CR7 Rosse Scontate , wafer type butterfly valve regulating performance, poor performance butterfly valve adjustment, generally used in only switch the occasion. Compared check valve, wafer type butterfly valve regulating performance, poor performance butterfly valve adjustment, generally used in only switch the occasion. Other than the butterfly valve high prices. Check valve: valve compared with simple structure, manufacture and easy maintenance, good regulating performance, widely used in a variety of media delivery pipeline. However, when fluid passes through the valve to change direction, so that greater resistance, not for viscosity, crystalline material containing suspended matter piping and easy, and it is not for the vent valve and the low vacuum system valves. Valve widely used in various pressurized fluid line, and the steam valve is also used air line. Shut-off valve is a common cut-off valve is mainly used to connect or disconnect the line of medium, is generally not used to regulate traffic. Shut-off valve for pressure, temperature range is large, but are generally used in small diameter pipes. Butterfly valves: butterfly valves called flap valve, is a simple structure of the control valve. As the butterfly valve and the wall should not be tight fit, apply only to regulate the flow, not for cutting pipe, commonly used in the conveying air and flue pipes regulate the flow. Butterfly valve with the stem with a circular disc rotation for opening and closing pieces, in order to achieve open and close movement of the valve. Butterfly valve with shut-off valve used primarily, but also designed to regulate and adjust the function or truncated. Currently butterfly medium and large diameter pipe at low pressure using more and more. Flanged valves andswing check valvehow to distinguish? Flange valve: including many; has the gate valve. Steam valve medium pressure. Pressure valve also includes a valve ……. but he is connected with the flange. As France has wire connection. Flange connection. Snap connections.PN16 ~ PN250 swing check valveis suitable for any pipeline in petroleum,chemical, pharmaceutical, chemical fertilizer, electric power industry, etc,whose
Working pressure range from1.6 to 25 MPa, working temperature range of butterfly swing check valve from – 29 to + 550 ?,and medium are varied like water, oil, steam, acid medium, etc.
Features and Benefits of butterfly valve:
1, Modern design, reasonable, light weight, quick opening and closing.
2, Easy to operate, labor-saving.
3, Easy installation, maintenance free.
4, Seal can be replaced, reliable sealing, bidirectional zero leakage.
5. Sealing material: anti-aging, corrosion-resistant and long service life. Standards:
Design standard is according to DIN, ANSIBSJISEN are also available upon request. "
ISTANBUL, March 17 (Xinhua) -- Germany closed its consulate general and a high school in Istanbul on Thursday over security threat.


""After the warning of German consulate, Private German High School will be closed Thursday, for one day over security reasons,"" the school said in a statement on its website.


Both the consulate general and the high school are located around Taksim Square at the center of Istanbul.


German citizens were urged to stay away from the area, while the closures have reportedly triggered panic among the Turks.


Turkey has remained on high alert following a Sunday suicide car bombing attack in Ankara, the capital, in which 37 people were killed.


Istanbulites started to advise each other against traveling to the Taksim area over social media.


In January, 12 German tourists were killed in a suicide attack in Istanbul.

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PARIS， July 17 (Xinhua) -- French Prime Minister Manuel Valls has cautioned French citizens that they have moved to a different age， saying that ""terrorism is now part of our everyday lives for a long period of time.""


At least 84 people were killed， and around 300 more injured on Thursday night when a truck crashed into a crowd in the southern city of Nice during France's national day celebrations.


In an interview with the French newspaper Journal Du Dimanche (JDD) published on Sunday， Valls said，""Some irresponsible politicians say that this attack could be avoided. But there is no such thing with zero risk.""


""I have always told the truth about terrorism: we are facing a war， there will be further attacks. It is hard to say， but more lives will be lost. It will take a long time，""stressed Valls.


Concerning the questions on the planning and the organization of the Bastille Day firework display in Nice， Valls said， ""the investigation will get to the bottom of this. But I do not want unnecessary controversies. The government offices and the city of Nice both planned the Bastille Day celebration， as they did with the Nice Carnival and the UEFA Euro 2016. Three meetings were organized for its preparation.""


""64 national police and 42 municipal police officers were deployed for this event， in addition to the normal activities on the rest of the city. If former mayor of Nice Christian Estrosi had the slightest doubt， he could have had the event cancelled. He did not do so，"" pointed out Valls.


He added: ""The Bastille Day terrorist attack is the embodiment of these new operating methods.""


""Let me clarify this aspect: right now， it is not possible to tell from the terrorist's background if he was a jihadist. But at the same time， his operating method corresponds point-by-point to the instructions of the Islamic State group: to target a symbolic period (Bastille Day celebration)， to cause the largest number of victims， to use any means available (a knife， a car， a truck) to kill innocent people.""


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