Vacuum valve definition

Vacuum valve means a spring-loaded device which is activated automatically by pressure the purpose of which is to protect the tank against unacceptable negative internal pressure;

Vacuum valve means a self-closing, spring-loaded device the purpose of which is to protect the tank against unacceptable negative internal pressure.

Examples of Vacuum valve in a sentence

Vacuum valve chambers, if required, shall be installed by a licensed underground contractor working for the Owner.
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Vacuum valve closed frequently in the Gold beam run, because the pressure increased from less than 10−9 T orr to higher than 10−5 T orr.
Vacuum valve chambers shall be placed in a convenient location in a dedicated right-of-way, Easement or license area designated for utility use adjacent to the Premises.
Please do not touch the optical components with your fingers! Click to HV unlock …, make sure, that the detector valve is opened, if so, select option Vacuum valve is open! and confirm by clicking OK.

More Definitions of Vacuum valve

Vacuum valve means a spring-loaded device which is activated automatically by pressure the purpose of which is to protect the cargo tank against unacceptable negative internal pressure;

Vacuum valve means an automatically activated safety valve the purpose of which is to protect the cargo tank against unacceptable negative internal pressure. When the list of substances on the vessel according to 1.16.1.2.5 contains substances for which explosion protection is required in column (17) of Table C of Chapter 3.2, it shall be deflagration safe against atmospheric explosions of the most critical substance in the list of substances. The deflagration safety shall be tested according to international standard ISO 16852:20161 and evidence of compliance with the applicable requirements (e.g., conformity assessment procedure according to Directive 2014/34/EU,2 ECE/TRADE/3913 or at least equivalent) shall be supplied. The deflagration safety may be ensured by an integrated flame arrester plate stack or a flame arrester (protection against deflagrations);”. 1.2.1 In the definition of “Pressure relief device”, replace “a spring-loaded device which is activated automatically by pressure” by “an automatically activated safety valve”. 1.2.1 In the definition of “Control temperature”, replace “or the self-reactive substance” by “, the self-reactive substance or the polymerizing substance”. 1.2.1 Amend the definition of Toximeter to read as follows:

Vacuum valve means a spring-loaded device which is activated automatically by pressure the purpose of which is to protect the cargo tank against unacceptable negative internal pressure; [“Vehicle” means any vehicle covered by the definition of the term “vehicle” in the ADR.] [or “wagon” in RID]. [see “Battery-vehicle”, “Closed vehicle”, “Open vehicle”, “Sheeted vehicle” and “Tank-vehicle”];

Vacuum valve means a special valve installed at the interface between a vacuum collection sewer and the holding tank which collects gravity discharge from one or more “Building Sewers.” The vacuum valve’s function is to automatically introduce the discharge from the building sewer(s) into the vacuum collector sewer.

Vacuum valve means a spring-loaded device which is activated automatically by pressure the purpose of which is to protect the tank against unacceptable negative internal pressure; 6 Published by the GCU Bureau, Avenue Louise, 500, BE–1050 Brussels, www.gcubureau.org.

Vacuum valve means an automatically activated safety valve the purpose of which is to protect the cargo tank against unacceptable negative internal pressure.”. When the list of substances on the vessel according to 1.16.1.2.5 contains substances for which explosion protection is required in column (17) of Table C of Chapter 3.2, it shall be deflagration safe against atmospheric explosions of the most critical substance in the list of substances. The deflagration safety shall be tested according to international standard ISO 16852:20101 and evidence of compliance with the applicable requirements (e.g., conformity assessment procedure according to Directive 2014/34/EC,2 the IECEx System, ECE/TRADE/3913 or at least equivalent) shall be supplied. The deflagration safety may be ensured by an integrated flame arrester plate stack or a flame arrester (protection against deflagrations);”1.2.1 Amend the definition of “Types of protection” to read as follows: “Types of protection:Electrical equipment (see IEC 60079-0:2011 or at least equivalent);EEx (d): flameproof enclosure (IEC 60079-1:2014 or at least equivalent); EEx (e): increased safety (IEC 60079-7:2015 or at least equivalent);EEx (ia) and EEx (ib): intrinsic safety (IEC 60079-11:2011 or at least equivalent);EEx (m): encapsulation (IEC 60079-18:2009 or at least equivalent);EEx (p): pressurized apparatus (IEC 60079-2:2014 or at least equivalent); EEx (q): powder filling (IEC 60079-5:2007 or at least equivalent);Non-electrical equipment (see IEC EN 13463-1:2009 or at least equivalent);EEx (fr): flow restricting enclosure (EN 13463-2:2005 or at least equivalent); EEx (d): flameproof enclosure (EN 13463-3:2005 or at least equivalent); EEx (c): constructional safety (EN 13463-5:2011 or at least equivalent);EEx (b): control of ignition source (EN 13463-6:2005 or at least equivalent); EEx (k): liquid immersion: (EN 13463-8:2003 or at least equivalent);”.1.2.1 Insert the following new definitions in alphabetical order:

Vacuum valve means an automatically activated safety valve the purpose of which is to protect the cargo tank against unacceptable negative internal pressure.”. When the list of substances on the vessel according to 1.16.1.2.5 contains substances for which explosion protection is required in column (17) of Table C of Chapter 3.2, it shall be deflagration safe against atmospheric explosions of the most critical substance in the list of substances. The deflagration safety shall be tested according to international standard ISO 16852:201601 and evidence of compliance with the applicable requirements (e.g., conformity assessment procedure according to Directive 2014/34/EC,2 the IECEx System, ECE/TRADE/3913 or at least equivalent) shall be supplied. The deflagration safety may be ensured by an integrated flame arrester plate stack or a flame arrester (protection against deflagrations);”1.2.1 Amend the definition of “Types of protection” to read as follows: “Types of protection:Electrical equipment (see IEC 60079-0:2011 or at least equivalent);EEx (d): flameproof enclosure (IEC 60079-1:2014 or at least equivalent); EEx (e): increased safety (IEC 60079-7:2015 or at least equivalent);EEx (ia) and EEx (ib): intrinsic safety (IEC 60079-11:2011 or at least equivalent);EEx (m): encapsulation (IEC 60079-18:2009 or at least equivalent);EEx (p): pressurized apparatus (IEC 60079-2:2014 or at least equivalent); 2 Journal of the European Communities No. L 23 of 26 February 2014, Sp. 309.5 http://iecex.com/rules.Formatted: Font: Italic Formatted: Font: Italic 3 A Common Regulatory Framework for Equipment Used in Environments with an Explosive Atmosphere, United Nations, 2011.2 Identical to EN ISO 16852:2010.

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