automatic fuel drain valve

Fuel valve

automatic cylinder drain valve

automatic drain valve

bottom drain valve

chest drain valve

drain cover

drain valve

drain valve of washer

levee drain valve

oil drain valve

Quick drain valve

spiral case drain valve

surface drain valve

Water Drain Valve

application valve cover

conjunctiveal valve cover

access cover

AFR fuel storage (away-from-reactor fuel storage)

array of fuel rods in the fuel assembly