Forged Steel Valves maintenance, also pay attention to its electric transmission in the first water problem. Infiltration of rainwater, especially during the rainy season. First, the transmission or drive shaft cover rust, and second, the winter freeze. Caused by electric valve operation torque is too large, no-load damage to transmission components or super torque motor would jump to protect electric operation can not be achieved. Damage to transmission parts, manual operation can not be. After the action in the ultra-torque protection, also can not switch to manual operation, such as the forced operation, the damage to the internal alloy components.

Forged Steel Valves Steel and iron are iron-based, add carbon as the main elements of the alloy, referred to as iron-carbon alloy. On the cast iron furnaces in the smelting, that is to be cast iron (liquid), the liquid cast iron into the casting, this iron is called cast iron. The difference between steel and carbon steel which. First, the steel classified by chemical composition

(1) Carbon steel: a. low-carbon steel (C ≤ 0.25%); b. in carbon (C ≤ 0.25 ~ 0.60%); c. high-carbon steel (C ≤ 0.60%).

Steel by forming method of classification: (1) forged steel; (2) steel; (3) hot-rolled steel; (4) cold-drawn steel.