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An analysis of valve market in China (Part two)

An analysis of valve market in China (Part two)

Existed problems in Chinese valve industry: • An ever-changing market • Relatively low price per product • Increasing cost of labor and raw materials • Lack of people with competent ability • Financial difficulty for middle and small-sized enterprises • A higher threshold of export Shortcomings of Chinese manufacturers and enterprises that need...

An analysis of valve market in China (Part one)

An analysis of valve market in China (Part one)

As a fundamental product for environmental protection, valves are of a wide variety of kinds, and rapidly evolving with the development of equipment manufacturing industry. Under the premise of technical enhancement, valves made in China have gained popularity in the market and their industrialization trend, as well as high-end developing direction, have become more and more obvious. Many kinds of...

Major Types and Installation of Steam Traps or Drain Valves

Major Types and Installation of Steam Traps or Drain Valves

The basic function of steam traps is to release condensate water, gas, carbon dioxide as quickly as possible, and minimize the leakage of steam simultaneously. There various types of drain valves, each with different functionality.   Steam traps can be divided into three types as follows according to different operating principles. Mechanical type: Function when the water level of the condensate...

Application of triple offset two-way hard sealing butterfly valves

Application of triple offset two-way hard sealing butterfly valves

At present, butterfly valves are widely used in many fields, such as petroleum, chemical industry, metallurgy and water and electricity as a component used to realize the on-off and flow control of pipeline systems. In the known butterfly valve technology, the sealing form is mostly sealed, and seal material is rubber, PTFE, etc. Due to structural limitations, it is not suitable for industries such...

14 taboos of installing a valve (Part Four)

14 taboos of installing a valve (Part Four)

Taboo 12 The specifications and models of the installed valves do not meet the design requirements. For example, the nominal pressure of the valve is less than the system test pressure. The water supply branch pipe adopts a gate valve when the pipe diameter is less than or equal to 50 mm. The dry pipe and the stand pipe of the hot water heating adopt a globe valve, while the suction pipe of fire pump...

14 taboos of installing a valve (Part Three)

14 taboos of installing a valve (Part Three)

Taboo 10 The flange plates and gaskets that joint pipelines are not strong enough, and the connecting bolts are short or have a small diameter. The rubber gasket is used for the heat pipe; the asbestos gasket is used for the cold water pipe; the double-layer gasket or the bevel gasket is used; and the flange gasket protrudes into the pipe. Consequences: The flange connection is not tight or even damaged,...

Baltic delivered a big quantity of EN1984/DIN 3352 gate valves

Baltic delivered a big quantity of EN1984/DIN 3352 gate valves

Dated April 25th, we delivered a big quantity of EN1984/DIN 3352 gate valves to one of our customers in Austria. The customer buys a large quantity of valves from us every year.   Generally:   GATE VALVE, design as per EN1984/DIN 3352 outside screw and yoke with hand wheel/gearbox body/bonnet GS-C25 trim 13%Cr flanged according EN 1092-1 type B1 for PN40 and B2 for PN63 and PN100...

14 Taboos of Installing a Valve (Part Two)

14 Taboos of Installing a Valve (Part Two)

Taboo 6 There are no holes or embedded parts in the building structure under construction. The size of the holes is too small and the embedded parts are not marked. Consequences: During the construction of Heating Engineering, Building Water Supply and Drainage and Sanitary Engineering, the construction structure is changed and even the principle reinforced steel bar is cut off, affecting safety of...

14 Taboos of Installing a Valve (Part One)

14 Taboos of Installing a Valve (Part One)

It's not easy to install a valve, and do you know that there are 14 taboos for installing a valve? If you break the taboo, there will be some consequences. How are you going to solve the problem caused by breaking a taboo? Taboo 1 The hydrostatic test is taken under subzero temperature during winter construction. The consequence: The pipe will be damaged due to the frozen liquid in the pipe when...

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 regulate...

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 or...

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 of...

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 DN400,...

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 will...

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 seat...

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. Speaking...

The Working Principle and Structural Characteristics of Ball Valve

The Working Principle and Structural Characteristics of Ball Valve

The valve's disc is a ball with hole and driven by stem to open and close the channel. The ball valve can be closed tightly by 90 degree rotation and small rotational torque. According to different needs of working conditions, different actuators can be assembled to form ball valves with a variety of control methods, such as electric ball valve, pneumatic ball valve, hydraulic ball valve,...