Oblique tee

There are many kinds of oblique three links, and the choice of three links will also be suitable for themselves, and these methods are also based on different areas and different environmental choices!

Inclined three way pipe fittings are a kind of pipe fittings used in the branch of pipeline. For seamless tube manufacturing of three links, at present, the commonly used processes are hydraulic bulging and hot forming two kinds.

Hydraulic bulging

The hydraulic bulging of oblique three way pipe fittings is a forming process by expanding the branch pipe by axial compensation of metal material. The process is to use special hydraulic machine, tube with three equal diameter are injected into the liquid through the two level side hydraulic cylinder synchronous motion of extrusion billet, billet extrusion volume change, the liquid in the tube with the tube size and the pressure, when achieved the three branch expansion required pressure, the metal material in the cylinder and tube blank inner liquid pressure under the dual role of the mold cavity flow and expansion pipe.

The hydraulic bulging process of the three way pipe can be formed at one time, and the production efficiency is higher; the head and shoulder wall thickness of the three pass are increased. Due to the larger tonnage required for the hydraulic bulging process of seamless three links, the domestic standard is used for the manufacture of three gauge wall thickness less than DN400. The suitable forming materials are low carbon steel, low alloy steel and stainless steel with low cold hardening tendency, including some non-ferrous metals, such as copper, aluminum, titanium, etc..

Hot pressing forming

Three inclined pipe hot forming tube blank will be greater than three in diameter, about three to flatten the size of the diameter, open a hole in the pipe tensile part; billet heated in forming model, and the tube is arranged in the pipe drawing die; under the pressure of the tube is radial compression in radial compression in the direction of flow and the formation of the metal to the branch tube in the die drawing. The whole process is formed by the radial compression of the tube blank and the stretching process of the branch pipe. Different from the hydraulic bulging three, the metal of the three way branch pipe of hot pressing is compensated by the radial movement of the tube blank, so it is also called radial compensation process.

Due to the heating of the three pass, the equipment required to reduce the tonnage of forming. The hot pressing three pass has wide adaptability to the material, and is suitable for the material of low carbon steel, alloy steel and stainless steel, especially the three pass with large caliber three pass and thick tube wall, which is usually used in the forming process.

Points for attention in the purchase of oblique three way:

(1) first determine whether the controlled medium is oil or water.

(2) calculate the flow m3/h of the controlled medium.

(3) according to the controlled medium and its design flow, the caliber of the three way temperature regulating valve is selected.

(4) according to the body material (copper or iron T (F), connection flange, G pipe thread, ZG pipe thread (Z), the valve structure type rotating valve, H valve type), temperature adjustment range and determine the installation type three valve type.

(5) according to the different flow direction of the three valve ports, the three way temperature regulating valve can be used for the confluence or distributary control occasions.

(6) the three way temperature regulating valve can replace one two way valve and one three way pipe.

(7) in order to prevent impurities from sticking or plugging in the medium, the three way temperature regulating valve should be equipped with a filter in front of the valve.

(8) the three way temperature control valve can be installed at any place, but the emergency manual device surface should be installed in easy operation position.

(9) the rotary valve type three way temperature regulating valve has six mounting types, which can be adapted to the connection of any pipe direction. The installation type is selected according to the actual pipeline connection.

(10) combined three thermostat valve is the role of the two different temperature fluid mixing fluid temperature between the third kinds of temperature between the valve, this valve has two import (B for high temperature C for the low entrance, entrance) and an outlet (A), the temperature sensing element. In the export department (A). Split three thermostat valve is the role of a fluid through the valve according to the proportion is divided into two parts, when the valve opens another outlet in a closed exports at the same time, this valve has an entrance and exit (A) two (B to pass back to port, C port shunt cooling).