Introduction to Puhui brand concealed rod elastic seat sealing gate valve

　Hidden rod elastic seat sealing gate valve RVHX/Z45X， RVHX/Z45X is the letter representing the model of concealed rod elastic seat seal gate valve. Z represents gate valve, model Z45X: 4 represents flange connection, 5 represents concealed wedge single gate, and X represents rubber seal.

Main parameters of concealed rod elastic seat sealing gate valve RVHX/Z45X

Nominal pressure: 1.0MPa-1.6MPa-2.5MPa;

Specification caliber: DN15 to DN400;

Medium temperature: 0 to 80 degrees;

Applicable media: water, reclaimed water;

Connection form: flange, thread.

Shell material: cast iron;

Flange standard: GB/T17241.6 GB/T9113；

Test standard: GB/T13927，Ap1598。

Reference for dimensions of concealed rod elastic seat seal gate valve RVHX/Z45X

　 Principle of concealed rod elastic seat sealing gate valveThe opening and closing component of the concealed rod elastic seat sealing gate valve is the gate plate, and the movement direction of the gate plate is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve has two sealing surfaces, and the most commonly used mode gate valve has two sealing surfaces that form a wedge shape. The wedge angle varies with the valve parameters, usually below 80 degrees, and 50 degrees when the medium temperature is not high. The gate of a wedge gate valve can be made as a whole, called a rigid gate;; It can also be made into a gate that can produce slight deformation to improve its processability and compensate for the deviation of the sealing surface angle during the processing. This type of gate is called an elastic gate.

Hidden rod elastic seat sealing gate valve RVHX/Z45X origin

The concealed rod elastic seat seal gate valve, also known as the lifting rod gate valve, usually has trapezoidal threads on the lifting rod. Through the nut at the top of the valve and the guide groove on the valve body, the rotational motion is converted into linear motion, that is, the operating torque is converted into operating thrust. When opening the valve, when the height of the gate is equal to 1:1 times the valve diameter, the fluid channel is completely unobstructed. But at runtime, this location cannot be monitored. In actual use, the vertex of the valve stem is used as a marker, that is, the position where it cannot be opened, as its fully open position. To consider the phenomenon of locking due to temperature changes, it is usually done by opening the valve to the top position and then reversing it by 1/2-1 turn as the position for fully opening the valve. Therefore, the fully open position of the valve is determined by the position of the gate (i.e. stroke).

Procurement Notice for Hidden Rod Elastic Seat Sealing Gate Valve：

1. Production caliber: DN25-DN600， The small-diameter concealed rod elastic seat sealed gate valve is connected by screw thread, while the large-diameter elastic seat sealed gate valve is connected by flange;
2. Product model: RVHX/Z45X；
3. Pressure rating range: 1.0MPA, 1.6MPa, 2.5MPa.

General requirements for purchasing concealed rod elastic seat sealed gate valves:

1.1 The specifications and categories of concealed rod elastic seat sealing gate valves should comply with the requirements of the pipeline design documents.

The model of the elastic seat seal gate valve should indicate the national standard number requirements it is based on If it is an enterprise standard, the relevant description of the model should be indicated.

1.3 The working pressure of the concealed rod elastic seat sealing gate valve should be ≥ the working pressure of the pipeline. Without affecting the price, the working pressure that the valve can withstand should be greater than the actual working pressure of the pipeline;; Under the closed condition of the concealed rod elastic seat sealing gate valve, any side should be able to withstand 1.1 times the valve working pressure value without leakage; When the valve is open, the valve body should be able to withstand twice the working pressure of the valve.

1.4 The manufacturing standard for concealed rod elastic seat sealed gate valves should specify the national standard number used. If it is an enterprise standard, the procurement contract should be accompanied by the enterprise documents.

Puhui large-diameter concealed rod elastic seat seal gate valve is a premium brand that provides free installation solutions. We look forward to your call at 0317-8294124.