Accueil >                  	Term: ball and test  
ball and test
A deep well pump valve in which a ball fits into a seat and prevents the backflow of oil or water. Each standing valve and each traveling valve has a ball and seat.
- Partie du discours : noun
 - Secteur d’activité/Domaine : Mines
 - Catégorie : Exploitation minière; Mineral mining
 - Government Agency: USBM
 
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 Créateur
- ed.young
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(Milwaukee, United States)