Before revision: Double-acting piston flamethrower A Chinese flamethrower from the Wujing Zongyao The Wujing Zongyao describes a flamethrower with a double-acting two-piston cylinder-pump capable of shooting a continuous blast of flame.
After revision: Double-acting piston flamethrower upA Chinese flamethrower from the Wujing Zongyao The Wujing Zongyao describes a flamethrower with a double-acting two-piston cylinder-pump capable of shooting a continuous blast of flame.