safety valve

noun 0.808

check valve

noun 0.702

return valve

noun 0.701

ball valve

noun 0.676

demand valve

noun 0.656

valve

noun 0.654

suction valve

noun 0.649

exhaust valve

noun 0.642

relief

noun 0.627

needle valve

noun 0.624

reliever

noun 0.623

poppet valve

noun 0.614

relief map

noun 0.597

reversing valve

noun 0.595

heart valve

noun 0.593

relief agency

noun 0.591

piston valve

noun 0.589

relief worker

noun 0.576

valvula

noun 0.574

microvalve

noun 0.573

thermionic valve

noun 0.568

pressure vessel

noun 0.552

tricuspid valve

noun 0.543

semilunar valve

noun 0.541

valve train

noun 0.531

tax relief

noun 0.530

blowout preventer

noun 0.530

valva

noun 0.529

relievo

noun 0.516

regulator

noun 0.515

sigh of relief

noun 0.512

circuit breaker

noun 0.506

spillway

noun 0.502