Sleeve type micro-adjustable needle valve is also called vacuum needle valve. It is made of precision forged integral valve body, which has the advantages of beautiful appearance, reasonable structure, long service life, etc.,
Sleeve type adjustable needle valve for water gas can achieve the purpose of controlling flow through precise adjustment. The vacuum trimmer valve is used to charge the vacuum system and accurately adjust the intake air flow to control and adjust the vacuum degree in the system. The applicable working medium is air without particulate dust and non-corrosive gas.
Product characteristics
1, fine thread structure design, high adjustment accuracy;
2, the shaft seal is sealed with fluorine rubber, the valve body is welded with stainless steel, and the leakage rate is small.
The sealing and fixing mechanism of a jacketed needle valve involves several steps:
By screw mechanical propulsion, sleeve nut moves forward to push the rear sleeve forward, at the same time, the rear sleeve pushes the front sleeve forward. Three-way needle valve The tip of the joint body squeezes the front sleeve inward. Front ferrule eliminates tolerance between inside diameter and outside diameter of pipe.
With the promotion of the rear sleeve, front sleeve moves forward and inward, rear end is raised, and is sealed with the bevel of the joint body.
With the greater deformation of the pipe and the increase of the contact surface between the body bevel and the front sleeve, greater resistance forces the back sleeve to act inward, thus forming a second strong support on the pipe.
After the sleeve nut is tightened one and a quarter turn, joint is sealed and holds the pipe tightly