The Advantages of the Full Welded Ball Valves

The Advantages of the Full Welded Ball Valves

It is known that the valves used for the petroleum and natural gas transportation pipelines are usually the full welded ball valves, and it can be said that the full welded ball valves are the critical parts of the long-distance pipelines. With the development and progress of all aspects of our country, the demand for oil and natural gas is also increasing, which makes the requirements of the full...


Valves Used for Water Supply Pipes

Valves Used for Water Supply Pipes

The valves used for the water supply pipes should be selected according to the following principles. 1. The globe valve should be selected when the diameter of the water supply pipe is smaller than 50mm; the gate valve or the butterfly valve is supposed to be used when the diameter is larger than 50mm. 2. The control valve or the globe valve should be chosen when the valve is going to be used to...


Methods to Improve Sealing Performance of Valves

Methods to Improve Sealing Performance of Valves

Most of valves on the market have the shortcoming of poor sealing performance, and many purchaser have no way to solve the problem. After the long-term and careful study, Baltic has found the following five methods to help you solve the poor sealing performance of valves, and here we are glad to share the methods with you.   1. The method of grinding The fine grinding not only ...


Selection Principles of Valves

Selection Principles of Valves

The selection of valves should be based on the following principles. Meeting the requirements of production processes Valves should meet the needs or requirements of media, working pressure, operating temperature, usage, etc., which is the most basic principle of the valve selection. If you need the valve to play the role of overpressure protection&nb...


The Selection Principles of Check Valves’ Clacks

The Selection Principles of Check Valves’ Clacks

There are various types of check valves' clacks since check valves can be divided into several categories. The clacks of swing check valves The clacks of swing check valves can be divided into the conventional type and the tilting type, and usually, the conventional type clacks are the default choices of many valve manufacturers.   For the tilting type clacks, due to the balanced action ...


The Selection of Check Valves

The Selection of Check Valves

Swing Check Valves 1. When install swing check valves, they should be installed horizontally as far as possible and when they are used for vertical pipes, the media flowing from the bottom to the top should be ensured.   2. Subject to the structure, swing check valves are not suitable for pipelines with DN40 and below DN40. 3. For large diameter pipes, for example, above DN...


Selection Principles of Valve Bonnet Bolts’ and Gaskets’ Materials

Selection Principles of Valve Bonnet Bolts’ and Gaskets’ Materials

The general selection principles of valve bonnet bolts' materials are given as follows. 1. There is a tightening in hot condition process of pipe connection flange bolts when pipe connection flanges are in the beginning period of operation, but there is no need for the valve bonnet bolts to have the tightening in hot condition process. Therefore, the valve bonnet bolts wil...


Gate Valve Versus Globe Valve

Gate Valve Versus Globe Valve

1. Structure Gate valve is shorter and higher than globe valve, so it needs attention to install rising stem valve. In case of the limited space, people should note that what kind of valve is appropriate. Gate valve is able to close the sealing surface relied on medium pressure, thus it can achieve the effect of no leakage. When opening or closing valve, the spool and the sealing surface of s...


Soft Seal Ball Valve & Metal Hard Seal Ball Valve

Soft Seal Ball Valve & Metal Hard Seal Ball Valve

There are many kinds of ball valve used in different working condition according to different structure forms, connection methods and body materials. The seal form of all types of ball valve can be classified into two categories: soft seal and hard seal. Due to different sealing materials, their characteristics, performance and applicable working condition will also be different.   1. Speakin...