TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
RELAY EMERGENCY VALVE [4 records]
Record 1 - internal organization data 1993-05-19
Record 1, English
Record 1, Subject field(s)
- Closing Devices and Nozzles (Mechanical Components)
- Rolling and Suspension Components (Railroad)
- Braking Devices (Mechanical Components)
Record 1, Main entry term, English
- A-2 emergency relay valve 1, record 1, English, A%2D2%20emergency%20relay%20valve
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Valve that vents the brake pipe. 1, record 1, English, - A%2D2%20emergency%20relay%20valve
Record 1, French
Record 1, Domaine(s)
- Obturateurs et buses (Composants mécaniques)
- Roulement et suspension (Chemins de fer)
- Freins (Composants mécaniques)
Record 1, Main entry term, French
- valve-relais d'urgence A-2
1, record 1, French, valve%2Drelais%20d%27urgence%20A%2D2
feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Valve qui met à l'atmosphère la conduite générale. 1, record 1, French, - valve%2Drelais%20d%27urgence%20A%2D2
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1988-04-26
Record 2, English
Record 2, Subject field(s)
- Braking Devices (Mechanical Components)
Record 2, Main entry term, English
- emergency line 1, record 2, English, emergency%20line
Record 2, Abbreviations, English
Record 2, Synonyms, English
- supply line 1, record 2, English, supply%20line
Record 2, Textual support, English
Record number: 2, Textual support number: 1 OBS
Air line that transmits reservoir pressure to trailer reservoir and controls "dynamite" action of emergency relay valve. 1, record 2, English, - emergency%20line
Record 2, French
Record 2, Domaine(s)
- Freins (Composants mécaniques)
Record 2, Main entry term, French
- conduite d'alimentation 1, record 2, French, conduite%20d%27alimentation
Record 2, Abbreviations, French
Record 2, Synonyms, French
- conduite des freins d'urgence 1, record 2, French, conduite%20des%20freins%20d%27urgence
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
frein à air comprimé 2, record 2, French, - conduite%20d%27alimentation
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1987-10-27
Record 3, English
Record 3, Subject field(s)
- Braking Devices (Mechanical Components)
Record 3, Main entry term, English
- control line 1, record 3, English, control%20line
Record 3, Abbreviations, English
Record 3, Synonyms, English
- service line 1, record 3, English, service%20line
Record 3, Textual support, English
Record number: 3, Textual support number: 1 OBS
Air line that transmits control pressure to the emergency relay valve. 1, record 3, English, - control%20line
Record 3, French
Record 3, Domaine(s)
- Freins (Composants mécaniques)
Record 3, Main entry term, French
- conduite du freinage de service
1, record 3, French, conduite%20du%20freinage%20de%20service
feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 OBS
frein à air comprimé 1, record 3, French, - conduite%20du%20freinage%20de%20service
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1987-01-30
Record 4, English
Record 4, Subject field(s)
- Braking Devices (Mechanical Components)
Record 4, Main entry term, English
- brake away valve 1, record 4, English, brake%20away%20valve
Record 4, Abbreviations, English
Record 4, Synonyms, English
- emergency relay valve 1, record 4, English, emergency%20relay%20valve
- relay emergency valve 1, record 4, English, relay%20emergency%20valve
Record 4, Textual support, English
Record number: 4, Textual support number: 1 OBS
Applies and releases trailer brakes, "dynamites" trailer brakes, prevents bleed back. 1, record 4, English, - brake%20away%20valve
Record 4, French
Record 4, Domaine(s)
- Freins (Composants mécaniques)
Record 4, Main entry term, French
- valve-relais d'urgence
1, record 4, French, valve%2Drelais%20d%27urgence
feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
frein à air comprimé 1, record 4, French, - valve%2Drelais%20d%27urgence
Record 4, Spanish
Record 4, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: