hydraulic tank drain valve plug

fuel sump tank drain valve

fuel tank drain plug

fuel tank drain valve

fuel tank drain valve access cover

hydraulic oil tank drain plug

hydraulic oil tank drain valve

hydraulic tank drain plug

hydraulic tank drain valve

tank drain plug

tank drain valve

transmission tank drain plug

drain valve plug

oil drain valve plug

pilot valve drain valve

active drain tank

air tank valve

atmospheric drain tank

chemical drain tank