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válvula de retenção
gen.	check valve
earth.sc., mech.eng.	swing type check valve; lift type check valve
mech.eng.	automatic non-return valve; clack valve; non-return valve
pow.el.	latching valve device

válvula de retenção: 13 phrases in 4 subjects

Chemistry	2
Earth sciences	3
Mechanic engineering	7
Transport	1