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GOZ VALVE TECHNICAL RESOURCES
VALVE MATERIAL SPECIFICATION OF BRASS ALLOY
Part name material name trademark Standard number Valve body, bonnet, opening and closing parts Cast tin bronze ZCuSn3Zn1Pb4 GB/T 1176-1987 ZCuSn5Pb5Zn5 ZCuSn10Zn2 Cast silicon brass ZCuSn16Si4 Cast aluminium bronze ZCuA19Mn2、ZCuA19Fe4Si4Zn2 Cast al
创建于2024.08.06Advantage of ball valve1. The working medium is sealed and reliable on both sides.
2. It has the lowest flow resistance (actually zero).
3. The closing parts can withstand the high pressure difference when closing.
4. The spherical closing part can be automatically posi
创建于2024.08.05BALL VALVE SEAT INSERT MATERIALS1. Synthetic rubber
The comprehensive properties of synthetic rubber such as oil resistance, temperature resistance and corrosion resistance are better than those of natural rubber. Generally, the use temperature of synthetic rubber is t ≤ 150 °C, na
创建于2024.08.06SPECIFICATION OF API 6D GATE VALVE1. Use, performance and characteristics
Flat gate valve is a kind of gate valve, and like the wedge gate valve, its main function is to control the on-off of the pipeline, rather than to regulate the flow of media in the pipeline. The advantages of
创建于2024.08.05GATE VALVE SPECIFICATION1. Gate valve has the following advantages:
1. Low fluid resistance.
2. The flow direction of the medium is not restricted.
3. The body shape is relatively simple, and the casting process is good.
4. When fully opened, the erosion of the sealing sur
创建于2024.08.05HOW TO FIX SHAFT AT SITE?Repair steps for stem strain
(1) Use a file to remove the burr at the strain of the valve stem; For the strained parts, use a flat shovel to process to a depth of about 1mm, and then use an abrasive cloth or angle grinder to polish and roughen, at
创建于2024.08.06Feasible Working Temp. for Soft seat Butterfly valveSoft-seated butterfly valves are suitable for use in hot and cold water systems up to 100°C. If the system requires higher temperatures, a metal-sealed butterfly valve (can be used in systems up to 500°C) can be used.
The maximum operating temperatu
创建于2024.08.05The applicable medium temperature for valve materialsThe applicable medium temperature for different valve body and bonnet materials is as follows:
The grey cast iron body and bonnet are suitable for media temperatures up to 250°C.
The malleable cast iron body and bonnet are suitable for media with a
创建于2024.08.06FLANGE TYPE SPECIFICATIONThe flange is a part with a flange. The flange can be individual, called a flange, or it can be a combined type, such as the flanges at both ends of the valve, for easy installation of bolts. This article introduces the material of the flange, the fo
创建于2024.08.06SPECIFICATION FOR SIX TYPES GASKET BETWEEN FLANGE1 Graphite gasket
Flat gaskets made of soft graphite for use in high-temperature, highly corrosive media.
2 Metal gaskets
There are three main types:
1) Octagonal and oval pads – suitable for trapezoidal trough flange sealing faces;
2) The tooth f
创建于2024.08.06DIFFERENCE BETWEEN CASTINGS AND FORGED VALVES1. Forging
1. Forging: It is a processing method that uses forging machinery to exert pressure on metal blanks to produce plastic deformation to obtain forgings with certain mechanical properties and certain shapes and sizes.
2. One of the two major
创建于2024.08.06VALVE FLANGE CONNECTION STANDARDThe flange is a part with a flange. The flange can be individual, called a flange, or it can be a combined type, such as the flanges at both ends of the valve, for easy installation of bolts.
1. Steel pipe flange is the standard for valve connection
创建于2024.08.06Advices for materials option in chemical industrysulphuric acid
As one of the strong corrosive media, sulfuric acid is an important industrial raw material with a wide range of uses. For concentrated sulfuric acid with a concentration of more than 80% and a temperature of less than 80 °C, carbon s
创建于2024.08.06VALVE MATERIALS SPECIFICATION1. General requirements for materials
The materials of the valve body, bonnet and flange should be selected according to the conditions of use and manufacturing requirements, and should comply with the provisions of GB 12228, GB 12229, GB 12230 and
创建于2024.08.06