Advantages and Disadvantages of  Globe Valves

Globe Valve

Valve refers to a valve whose closure (disc) moves along the center line of the seat. According to the movement of the disc, the change of the seat opening is proportional to the disc travel. Because the stem opening or closing stroke of this kind of valve is relatively short, and has a very reliable cut-off function, and because the change of the seat opening is proportional to the disc travel, it is very suitable for flow regulation. Therefore, this type of valve is very flexible for cutting or regulating and throttling.

Bellow seal DIN Carbonsteel globe valve rising stem OY&S with lever DN80

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Advantages and Disadvantages of  Butterfly Valves

Butterfly valve

Butterfly valve is a kind of valve that opens, closes and regulates fluid passage by reciprocating about 90 degrees of disc-type opening and closing parts.

Advantage:

It is simple in structure, small in volume, light in weight and low in consumables. It is not used in large caliber valves.

Pneumatic actutaer Metal seated butterfly valve Stainless steel 316TI-150LB-8″

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Advantages and Disadvantages of  Ball Valves

Ball valve

The ball valve is evolved from the cock valve. Its opening and closing part is a sphere, which rotates 90 degrees around the axis of the valve stem to achieve the purpose of opening and closing. Ball valve is mainly used to cut off, distribute and change the direction of medium flow in pipeline. The ball valve with V-shaped opening also has good flow regulation function.

Stainelsee steel ball valve list,threadflangewafetype-2pcs-3pcs-1pcsbody-Three way-four way

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Advantages and Disadvantages of  Gate Valves

Advantages and Disadvantages of  Gate Valves

Gate valve refers to the valve whose closing part (gate) moves vertically along the axis of the passage. It is mainly used as cutting medium in the pipeline, i.e. fully open or fully closed. Generally, gate valve can not be used as flow regulation. It can be applied to low temperature pressure can also be applied to high temperature and high pressure, and according to the different material of the valve. But gate valves are generally not used in pipelines for conveying mud and other media.

Water DIN-f4 softseat EPDM-Non Rising stem gate valve

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Thermal insulation valves: ball valves feature, principal, installation,advantageous

Thermal insulation valve

Insulation valves take good insulation measures for a large number of valves in industrial production, which can not only achieve good energy-saving effect, but also improve the safety and reliability of valves and prolong the service life of valves.

Flanged Jacket EN Inculation Ball Valve: Stainless steel CF8, PN16 DN80, Insulation mediam: steam with pressure 4bar

The insulation valve has good insulation and cooling characteristics, and the diameter of the valve is the same as the diameter of the pipe. At the same time, it can effectively reduce the loss of medium heat in the pipeline. It has good heat preservation and cooling characteristics, and can effectively reduce the heat loss of medium in the pipeline. Continue reading “Thermal insulation valves: ball valves feature, principal, installation,advantageous”

wafer-Lug stainless steel manual knife gate valve and wafer-flange carbon steel Pneumatic Knife gate valve

The wide application of stainless steel knife gate valve results from its own characteristics. Firstly, it has good sealing effect and good elasticity of U-type seal gasket; secondly, its full-diameter design has strong passing ability; thirdly, like an knife, it has good breaking effect and can effectively solve the leakage phenomenon after the breaking of the gate containing block, particle and fiber medium; Forth, the knife gate valve are light weight and small room needed; finally, it does not need to remove the valve because of its convenient maintenance without replace the valve seal.

SGV order for Europe plant: Stainless steel knife gate and Carbon steel knife gate valve are bonnet less design: refer MSS SP81 or JB/T8691 (Similar with MSS SP 81 but have more clear definition)

Well protected Valve Packing , Suitable for long distance air and sea transportation.

The order have 2 part:
Wafer-lug /wafer flanged type Risting stem Pneumatic Knife gate valve

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Several Reasons  and Preventive Measures for Flame and Explosion of Oxygen Valve, Pipeline Valve 

Several Reasons  and Preventive Measures  for Flame and Explosion of Oxygen Valve, Pipeline Valve 

With the increase of oxygen consumption, oxygen pipelines are used for transport large oxygen. Owing to the long pipeline and wide distribution, combined with the quick opening or quick closing of valves, accidents of combustion and explosion of oxygen pipelines and valves occur from time to time. Therefore, it is essential to comprehensively analyze the hidden dangers and dangers of oxygen pipelines and cold valves and take corresponding measures.

Oxygen Valve sets include oil-free bronze ball valve, stainless steel Axial check valve, stainless steel Axial flow control valve : Valve Packing box/neck should be insulate with site air

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Butterfly Valve API 609 Category B

What does the American Standard Butterfly Valve API 609 Category B mean?

API 609 is the design standard for the American standard butterfly valve, which specifies the structure length is divided into Category A and B, in Chinese is the structure length of API 609 A butterfly valve and B butterfly valve, also called the body length. Also different in design/Inspection. Here we focus on Face to face of API609 Valve.

Butterfly valves are categorized according to their structure. Nowadays, there are more midline/center line butterfly valves and eccentric butterfly valves on the market. The standard length of the American standard butterfly valve used in the center line butterfly valve is the API 609 Class A butterfly valve. The eccentric butterfly valve is mainly a three-offset butterfly valve. The structure length standard adopted is the Class B butterfly valve regulated by API 609.

Perfect repair of large size gate valve

Perfect repair of large size gate valve
The waste valves replaced from the working site are corroded by various media, fluid pressure, and affected by different temperatures. The parts including the valve body are affected by different degrees and different locations and cause valve malfunction. The drop cannot even be used. However, the used old valves that have been ineffective at the “validation” are not worthless and have no remediation value. They cannot be repaired and used, as long as they use the principles of metal structure, dynamics, fluidics, corrosion protection, welding, and heat treatment. Knowledge, the provision of essential maintenance equipment and the establishment of an experienced professional team, can fully implement deep-level, high-grade, high-quality repair and refurbishment of used valves.

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Center disc butterfly valve /Soft seat factory

New Butterfly valve factory Start to work:

Prodction: Center disc butterfly valve with soft seat, No-pin or with pin design. Seat: Rubber/PTFE/FEP

Material: Mainly Body:Ductile iron with stock, and also Carbon steel body/Stainless steel, Cooper alloy,, Special alloy.

Production Ability: 2000Ton/year

Application: Mainly clean medium water,sea water, Water treatment, also civil project, power plant, building, offshore/marine supertructure

mainly use for clean medium water, civil project,water treatment, power plant, building, offshore/marine supertructure

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