International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 50216-8:2005
Title Power transformer and reactor fittings - Part 8: Butterfly valves for insulating liquid circuits
Project Number 14952
Abstract/Scope This standard covers the butterfly valves used on the pipelines, in which the insulating liquid of power transformers or reactors flows, in order to allow the replacement of components, without removing the whole or a large amount of the insulating liquid from the conservator and the tank. This standard defines the general overall dimensions and some functional and manufacturing characteristics to guarantee interchangeability.


Current Stage code 6060
Current Stage code date 2005-05-31
Current Stage code deadline 2005-12-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/TC 14
Reference Document  
ICS 23.060.30 - Gate valves
29.180 - Transformers. Reactors
Keywords Power transformer; Reactor fitting; Butterfly valve; Insulating liquid
Note Resolution 41/2: Possible amendment to be considered
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2005-05-31 2005-12-01 export to doc file  EN  FR  DE
5099 2004-12-01 2005-06-01  
5061 2004-10-27 2004-12-01  
5020 2004-03-12 2004-09-10  
3090 2003-12-10 2004-01-31  
2020 2003-04-11 2003-10-11  
1000 2001-10-25 2002-04-25  

Implementation Dates

date of Ratification (DOR) (1) 2004-12-01
date of Availability (DAV) (2) 2005-05-31
date of Announcement (DOA) (3) 2005-06-01
date of Publication (DOP) (4) 2005-12-01
date of Withdrawal (DOW) (5) 2007-12-01


Superseded by  
Normative reference (6)  

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.