Custom your industry Valves
FuRui Valve has been focused on manufacturing high-quality valve to many oil and gas, industridl. and mechanical markets all around the word.
Wehave passed iso 9001 quality management system certification, domestic Ts security certification, CE, OHSAS18001, API.
Needle Valve
Needle valves are fine-tuning valves with needle-shaped plugs that are primarily used to regulate gas flow. Fine-tuning valves require that the opening of the valve orifice gradually increases, and the valve can be continuously and finely adjusted from closed to maximum open. Needle valve plugs can perform this function. Needle valve plug is generally made of hardened steel needle, and the valve seat is made of tin, copper and other soft materials. Valve needle and valve seat seal is dependent on its taper surface to achieve a tight fit. The taper of the valve needle has two kinds of 1:50 and 60 taper angle, and the taper surface should be finely ground. The seal between the valve stem and the valve seat is provided by the bellows.
