Noticias y Notas
Los principales productos de esta empresa son válvulas de bronce, API / compuerta DIN / globo / válvulas de retención / válvula de mariposa / válvula de tapón, válvulas de bola y válvulas de acero forjado. Sus productos han sido ampliamente utilizados en petróleo, petroquímica, química, metalurgia, energía eléctrica, conservación de agua, maquinaria y muchos otros campos.
Heat treatment for Sedelon Valves Heat treatment is a method used to alter the physical, and sometimes chemical properties of a material. The most common application is metallurgical. It involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of a material. It applies only to processes where the heating and cooling are done for the specific purpose of altering properties intentionally Types of Heat Treatment (Steel): 1) Annealing / Normalizing, 2) Case hardening, 3) Precipitation hardening, 4) Tempering, and Quenching The purpose of Heat Treatment:
Sedelon Valve Provide a lot of Pressure Seal Valves,Today we main talk about Pressure Seal Valves. Pressure Seal Gate Valves are suitable for the nominal pressure PN20.0 ~ 32.0 Mpa (900 lb to 2500 lb) and P (54) 100 v ~ P(57)170 v ,working temperature 540 ℃ or less (P (57) 170v of whom working temperature is 570 ℃) of oil, chemical industry, hydropower and thermal power plant under various working conditions such as the pipeline, cut off or connect medium. Valve filling flexible graphite, braided graphite and middle packing set combination.Both has good sealing performance and has certain strength, to ensure that the valve without leakage, accord with environmental protection requirement. Pressure is used to connect the valve body and cover the self-sealing sealing structure. Slot wedge zone of the sealing ring (mild steel or stainless steel) and the four open loop combination;Body parts corresponding carbide surfacing, forcing a reliable sealing ring deformation under high pressure. The higher the pressure sealing is more reliable. Feature: Pressure Range:(900LB-2500LB),(P (54) 100 v ~ P(57)170 v ) Applicable medium:water, oil, steam, etc. Operation mode: manual, electric, hydraulic, etc. Temperature:<=540 ℃, Connections:Butt Welding ends, Design Standard:AISI,DIN,JIS,BS ,Etc. Material:Cast Steel,Carbon Steel,Bronze,Stainless Steel ,Etc.
API598 Inspection and Testing Inspection Range: This standard covers the inspection, test, complementary inspection and pressure test of Gate, Globe, Check, Ball, Butterfly and Plug valves. Testing Types: A shell test B backseat test C low pressure seal test D high pressure seal test E appearance inspection of casting F high pressure gas shell test．
Forged steel flange globe valves are the valves whose disc move along the valve seat center-line when closing and opening. Regarding these kinds of valves , the most obvious advantage is: In the process of opening and closing, due to the friction between the disc in the valve sealing surface is smaller than gate valves, so it is much durable and wear-resisting. The rising height in the process of opening is generally only a quarter of the seat channel’s diameter, so the shape and size are much smaller than gate valves. Typically there is only one sealing surface on the valve body and disc, thus it is easy to maintenance.
Recently, Sedelon successfully passed the review of American Petroleum Institute-( API) and was qualified to maintain the certificate of API Q1 and API Spec 6D and in accordance with the provisions of the License Agreement. API certificate is a crucial and necessary promise to client in the worldwide. At present, the API Monogram licenses more than 800 pipeline valve manufacturer(API 6D) and 12 bolted bolted steel gate valve(API 600) in 70 countries. Sedelon are honored to have the acknowledge API American petroleum institute, the quality system is mainly used in petroleum, petrochemical and gas industry with the standardization of equipment management work. API quality system in the United States and other countries and regions all over the world enjoy a high reputation. After a strict retest by the special expert appointed by API authority, Sedelon proves it has excellent ability and stable management system to ensure the high quality products to every customers. Sedelon aiming at leading the high-end market, striving to research & develop creative and high quality products. For instance, Sedelon was researching the fugtive emission valves which is tested by helium and equipped with high density packing (Chesterton or Burgmann) protected the environment in a large extend. In this meeting , API expert Mr Lan spoke highly of Sedelon ‘s perdormance of quality management, recommending to keep the API certificate after inspecting the in order on-site operation but also gave advise to promote the management system for a long term development. API certificate inquiry website: http://www.api.org
Top entry ball valve is mainly used in pipeline and industry system. It has top entry and on line maintenance function and many other advantages, such as small fluid resistance, simple structure, small volume, light weight, reliable sealing, convenience for operation and maintenance, quick and flexible opening and closing. Top entry series ball valve with trunnion mounted ball, which is ground, polished and hard face treated on the surface. The ball and stem is integrated, sliding bearing is installed on the external bore so that the friction radius is small and operation torque is very low. It is possible to remove the bonnet of the Top-entry valve allowing free access to the body cavity without dismantling the valve from the line. A set of special maintenance tools permits to take out both ball and seat-rings; this maintenance operation requires very little space around the valve, thus allowing it in areas where space is a limiting factor. Top Entry construction is available in forged or cast execution, one piece symmetric body closed by a bolted bonnet. The range includes both full and reduced bore, pressure ANSI class from 150 to 2500 , with all possible combination of ends connections: flanged (RF-RTJ), butt welding and HUB ends.
The Difference Between Gate Valves and Globe Valves @Sedelon® In the process of regulating the flow，the valves play an important role. With the rapid development of the valve's usage, the types of valves are becoming diverse. Gate valves and globe valves are two typical valve types among them. So what are the differences between these two kinds of valves? Regarding the gate valve, when the valve opens and closes, the stem of the valve will move along with the wedge. This type is rising stem gate valve. Through the slot on the valve body and the nut on the top of the valve, the rotation movement is turned into the straight-forward movement with the help of the acme thread on the stem, thus making the operating torque to become operating thrust. Glove Valves: The globe valves can be used to cut and throttle the fluid. As a kind of typical cut-off valve, the sealing performance can be accomplished by exerting torque on the valve stem which will make pressure on the disc in axial direction, then the sealing face and the seat face will touch tightly to avoid the leakage of the fluid through the sealing parts. Advantages and disadvantages Regarding the gate valves, flow resistance is smaller, because channel in the eternal body is direct and straight. Different from the globe valves, the movement of the wedge in the gate valve is axis to the flow of fluid when opening and closing. But the disadvantage is that the sealing face will easily have erosion and abrasion so the maintenance will be difficult. The size is big, thus the opening of it needs more space and time. Globe valves: the structure is simpler, the maintenance and repair are easier. The sealing face is not easily eroded. The sealing performance is good! The maintenance procedures: The maintenance of the gate valve is not suitable to operate in the pipeline site. Under this circumstance, the valves and pipes which are welded together is prior to use globe valves. The operators don't need to dismount the globe valves from the pipes. The characteristics of the gate valves and globe valves are quite clear according to the analysis of the advantages, structures and maintenance procedures. With the development of the economy and industry, choosing the suitable type of valves are very significant.
Sedelon®Lift Check Valve Sedelon Valve Provide a lot of Check Valves,Today we main talk about Lift Check Valves.
The main part of valves is body, bonnet, yoke, gland ,hand-wheel,stem, copper nut,bearing, standard parts and sealing components. Usually, a piece of valve was finished by rough machining and finish machining after outsourcing these semi-finished accessor
Sedelon Valve Provide a lot of Y-Strainers And T-Strainers/Basket Strainer, Today we specially recommend the Y-Strainers. Y-Strainers are devices for mechanically removing unwanted solids from liquid, gas or steam lines by means of a perforated or wire m
