Dalian marine valve is a type of valve specifically designed for use in ship systems. In the process of ship operation, it is necessary to control and regulate various liquids used for ship transportation (such as water, fuel, chemicals, etc.), and at this time, ship valves have become an indispensable component of the ship system.

In ship systems, the sealing performance of valves is very important. Because liquids are affected by various factors such as high temperature, high pressure, and vibration during transportation and storage, valves must maintain good sealing performance to avoid leakage and ensure the safe operation of the ship system.

In order to meet this strict requirement, Dalian marine valves have a dual sealing function. Next, we will provide a detailed introduction to the dual sealing function of marine valves.

1、 The principle of dual sealing function

In general, there are two sealing methods for valves: one is elastic sealing achieved by sealing rings, and the other is rigid sealing achieved by metal sealing surfaces.

Dalian marine valves adopt a double sealing method, which simultaneously uses elastic sealing and rigid sealing. When the valve is in the closed state, a layer of sealing is formed by the elastic deformation of the sealing ring; When the sealing ring is insufficient to ensure complete sealing, a second layer of sealing is formed through the rigid structure of the metal sealing surface.

This dual sealing method can better ensure the sealing performance of the valve and prevent leakage more efficiently. In certain critical situations, this sealing method becomes particularly important.

2、 Elastic sealing design

The elastic sealing design of Dalian marine valves adopts an adjustable sealing ring structure design. The sealing ring is made of high-quality materials, which are resistant to high temperature, corrosion, and have good elasticity recovery, which is more conducive to ensuring sealing performance. Meanwhile, the adjustable sealing ring can also be adjusted and replaced according to the working status of the valve. If the sealing ring needs to be replaced, it can be easily disassembled.

3、 Rigid sealing design

The rigid sealing design of Dalian marine valves adopts a trapezoidal sealing surface structure, which is very compact, reasonable, and easy to operate. Due to its unique structure and high fitting accuracy, it can seamlessly fit with the valve body, forming a perfect rigid seal. Rigid sealing is usually used for auxiliary sealing when the elastic sealing ring cannot fully seal.

4、 Advantages

The dual sealing function of Dalian marine valves not only has good sealing performance, but also has the following advantages:

1. High security. Due to the dual sealing design, even if one seal fails, the other seal can still provide protection, avoiding risks such as cracking and leakage.

2. Strong reliability. The sealing ring has good material and strong elasticity recovery, making it more convenient for long-term use without the need for excessive maintenance and other work.

3. Wide applicability. Due to its dual sealing design, it is suitable for various gases, liquids, and other media, with a wide range of performance.