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الصفحة الرئيسية

اسم المنتج: صمام مزورة الصلب غلوب

مزورة الصلب الصمامات العالم وأساسا لوقف أو ربط المتوسطة في خطوط الأنابيب على أنظمة مختلفة من محطة للطاقة الحرارية، وخاصة بالنسبة للغير قابلة للتآكل وسائل مثل الماء والبخار. مقارنة الصمامات الأخرى، وصمامات مصنوعة من الفولاذ المقوى هي من نسيج ج haracterized إغلاق، أداء أفضل المادية، يعني ذلك ارتفاع درجات الحرارة والضغوط العالية.

ومعيار نطاق
الحجم: 1/4 “إلى 2” DN15 DN50 إلى
الضغط: CLASS150، CLASS300، CLASS600، CLASS800، 900 £، CLASS1500، CLASS 2500، PN16 ~ PN420
المواد: الكربون الصلب (A105، LF2)، الفولاذ المقاوم للصدأ (F304، F304L، F316، F316L)، دوبلكس (F51، F55)، سبائك (F1، F5، F5A، F9، F11، F22)
تصميم وتصنيع: API602، ASME B16.34، BS 5352
اختبار الضغط: API 598
علامة: MSS SP25 Continue reading “الصفحة الرئيسية”

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Válvula de esfera flotante-floating ball valve

Válvula de esfera flotante

Una válvula con la bola flotante (no fijo por un muñón ) en el interior del cuerpo de la válvula se denomina como válvula de bola flotante, se deriva hacia el lado de aguas abajo y empuja fuertemente contra el asiento bajo la presión del medio para asegurar la fiabilidad de sellado. Se ha estructura simple, el rendimiento del sellado bueno, se utiliza generalmente en aplicaciones de presión media o baja.

Tamaño: NPS 1/2 “~ 10” DN15 ~ DN250
Grado de la presión: Clase 150 ~ 600 ~ PN16 PN100
Conexión: RF, BW, RTJ, SW, etc
Material: CS, SS, aleación y así sucesivamente
Diseño y fabricación: API 6D, ASME B16.34 (BS5351), API 608, MSS-SP-72
Prueba e inspección: API 598, API 6D
Face To Face Dimension: ASME B16.10, API 6D
Brida de conexión Dimensiones: ASME B16.5
BW Dimensión de conexión: ASME B16.25
Prueba de fuego de diseño: API 607/6FA

Diseño Reportaje:
Una válvula de bola flotante es una válvula con la bola flotante (no fijo por un muñón) en el interior del cuerpo de la válvula, que se desplaza hacia el lado de aguas abajo y empuja fuertemente contra el asiento bajo la presión del medio para asegurar la fiabilidad de sellado. Continue reading “Válvula de esfera flotante-floating ball valve”

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لوحة مزدوجة أو تحقق سوينغ فحص صمام فراشة نوع

اسم المنتج: الثنائي ربيع القرص المحملة فحص الصمام (ويسمى أيضا صمام لوحة مزدوجة أو تحقق سوينغ فحص صمام فراشة نوع)

صمام ثنائي لوحة الاختيار تقدم وسيلة غير مكلفة لحماية خط أنابيب الخاص بك، فمن ضوء في، الوزن المدمجة، تصميم منظم قصيرة، مقاومة التدفق المنخفض، مقارنة مع التقليدية ذات حواف صمام الاختيار البديل .

ومعيار النطاق:
الحجم: NPS 2 “~ 48” DN50 ~ DN1200
التقييم الضغط: فئة 150 ~ 2500 ~ PN2.5 PN420
الاتصال: نوع الرقاقة، ذات حواف النوع، نوع مقبض كامل أو نوع العروه الانقسام، إذا requied نهاية بعقب ولد نهاية المحور، وهي متاحة أيضا
هيئة المواد: الكربون الصلب والفولاذ المقاوم للصدأ، ودوبلكس على الوجهين سوبر، والتيتانيوم، و Inconel
القرص: الفولاذ المقاوم للصدأ، ودوبلكس على الوجهين سوبر، والتيتانيوم، و Inconel
الربيع: و Inconel Continue reading “لوحة مزدوجة أو تحقق سوينغ فحص صمام فراشة نوع”

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Forged steel globe valve

Válvula Globo Aço forjado of Sangong

Válvulas globo em aço forjado são principalmente o fornecimento de parar ou ligar o meio de nos oleodutos em vários sistemas de estação de energia térmica, especialmente para não corrosivos mídias como água e vapor. Comparado com outras válvulas, válvulas de aço forjado são c haracterized pela textura perto, melhor desempenho físico, isso significa temperaturas, altas pressões.

Standard and Scope
Tamanho: 1/4 “a 2” DN15 a DN50
Pressão: CLASS150, CLASS300, CLASS600, CLASS800, £ 900, CLASS1500, CLASS 2500, PN16 ~ PN420
Material: Aço carbono (A105, LF2), aço inoxidável (F304, F304L, F316, F316L), Duplex (F51, F55), Liga (F1, F5, F5A, F9, F11, F22)
Projeto e manufatura: API602, ASME B16.34, BS 5352
Teste de pressão: API 598
Tag: MSS SP25 Continue reading “Forged steel globe valve”

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SGV Wedge Gate Valve

SGV Wedge Gate Valve

Gate valve can only be fully open/close, and can not be used as adjusting valve.
In a wedge gate, the seats are not parallel, but taper inward from top to bottom. The discs are also tapered.The trim of wedge gate valve is wedge, which is vertical to medium flow direction. When the discs are forced into the seats, the wedging action provides the sealing force. That is effective for sealing, but one of the drawbacks of a wedge gate is the discs can get ‘stuck’ in the seat, especially if there is a great change in system temperature from when the valve is closed.
Wedge gate valve can be a unique type called inflexible disc; and can also be a flexible wedge.Gate valve under low pressure occasion, disc is forced to set to guarantee sealing; while disc is forced to contact another seat by high pressure condition. There is a slot structure inside the cavity to make sure the disc will not rotate under pressure, and also guarantee there is no friction before close position between seat and disc, thus reduces frictions on sealing face.

Design standards: API 600、GB/T 12234 and other
DN: 1/2 “-48”, DN15-DN1200
PN: Class150-Class1500
Body material: carbon steel, stainless steel, alloy etc.ASTM A216 WCB,A217 WC6,A351 CF8,A351 CF8M,A351 CF3,A351 CF3M,A351 CN7M
Operation: manual, gear, handwheel,hydraulic, motor etc.
OS&Y,Rising stem,Flexible Wedge Gate Valve,Solid Wedge Gate Valve
Bolted Bonnet,Threaded or welded seat ring, Renewable seat ring, Forged disc gate valve for small size,cast disc gate valve for big size

Wedge gate valve of Sangong has following advantages

1. Product fabrication is strictly according to API 600, full port design, on full open position, valve disc is higher that flow direction to guarantee flow smoothly, reduce pressure loss, high transmission efficiency.
2. For carbon material valve, seat is forged, high density, good sealing capacity. Sealing face use 13Cr or Stellite hard alloy material, overlay net thickness is over 2mm, valve seat is threaded or welded on the valve body, easy to maintain and dissemble.
3. Adopt rising stem, stem and disc is connected by a T shaped groove, T head and stem is forged together to guarantee enough connection strength. Flexible disc structure can avoid stuck caused by heat inflation
4. Back seal design will protect packing when valve is fully opened. Packing is flexible graphite, good sealing capacity, and also venting system is available. Packing bush and gland are ball structure, pressure process will enable the stem to automatically centralized, avoid stem stuck.
5. Bolted bonnet structure and thick hex nut fastening parts will ensure reliable function. Gasket adopt flexible graphite twist stainless steel or octagonal ring to get good sealing effect
6. Top entry nut design assures that, when the valve is open, even if demount the hand-wheel, stem and disc will not fall down. Stem is made by Aluminum bronze, and both sides set bearing, all this made the valve easy to operate.

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Bellow Seal Valves:Gate,Globe Valve

A valve with a bellows to seal off the stem enclosure is an ideal choice whenever leakage to the atmosphere is intolerable due to toxicity, chemical corrosion, radioactivity, other health or ecological reasons. In addition, seal welding the body-bonnet seal makes the valve hermetically sealed. The bellows is welded to the stem and to the bottom of the bonnet.
Supplier: Sangong Valve, China
Manufacturer: Shop in Wenzhou Oubei Industrial Park

Bellow seal valve is designed with bellow welded onto the bonnet and stem, so that when the stem travels drive the below expansion or decompression. It inherently eliminate the conventional design of possible stem packing leakage. SGV bellow sealed valves can achieve truly zero leakage; ideal for stringent leakage-free application like toxic and flammable services. Bellow seal valve is an ideal choice whenever leakage to the atmosphere is intolerable due to toxicity, chemical corrosion, radioactivity, other health or ecological reasons. In addition, seal welding the body-bonnet seal makes the valve hermetically sealed. Continue reading “Bellow Seal Valves:Gate,Globe Valve”

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100X type Floating Ball Valve – Product Installation and Maintenance

Water Control Valve Series: Installation and Maintenance of 100X type floating ball valve

Installation and Maintenance

1. Main valve should be installed on the inlet of pool or high water towel. Though other method also able to operate normally, the best way is install valve on the pipe horizontally with the cover upward. Float valve should be installed in the tank or water towel, in order to remote control easily as shown below.
2. Before installation, the pipe should be totally clear up. The valve should be installed follow the arrow direction.
3. 1 pc gate valve and 1 pc filter should be installed before main valve, 1pc gate valve should be installed after main valve, in order to facilitate maintenance.
4. During water test, open the front gate valve slowly so to increase pressure slowly, attention to the leakage of the control pipe outside main valve.
5. In order to pack conveniently, the float valve will be installed in main valve. The actual installation as shown below.
6. The micro filter in the conduit entrance of main valve should be cleaned one time each 2-3 month.

Main valve maintenance instruction

Hydraulic control valve, also named as water control valve, self lubricate by water, it doesn’t require any oil. If the parts of main valve damage, please dismantle the valve follow below instruction. Notes: (Usually the wearing parts within main valve are diaphragm and o-ring. There is little damage for other parts)
1. Close gate valve both before and after main valve
2. Loose the screw in pipe joint of main valve cover, release valve pressure
3. Remove all the screw, including all necessary copper pipe and nut in control pipe.
4. Remove cover and spring
5. Remove stem, diaphragm, piston and so on, not to damage the diaphragm
6. Check if the diaphragm and o –ring is damage, if they haven’t damage, please don’t resolve their internal parts.

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Spring Emergency shut off butterfly valve-quick closing valve

Spring Emergency shut off butterfly valve-quick closing valve 

The emergency shutoff valve or trip valve is used on the above mentioned steam turbines to shut off the flow steam, which is the power source for the turbine in case an overspeed condition of the turbine, or in some cases when the unit is set up for a low oil pressure condition. These turbines are used as general purpose power supplies throughout refineries chemical plants power plants and other areas where steam is generated for heating.

The goal of long term runs more than one year has been desired due to lost production when the turbines are shut down man power required to go through the procedure transferring production to another source and the potential of causing damage to the turbine during shut down and start up.

SGV Quick closing valve is a Spring Emergency shut off butterfly valve which is Electric-hydraulic operated, can be closed within 0.5~1 second.The valve is applied to parrallel generator sets. It shut immediatedly as the accident happens, to prevents the steam and condensed water flowing back and destrying the sets.

This Fast closing valve is mainly used in coal gas residual heat power generation system and extration steam turbine system. The valve is critical auxiliary equipment for system. it can instead of electric cut off buuterfly valve and check butterfly valve because of its small flow resistance and sper seal function.

Valve body and seal structure adopt ADMAS type seal structure, triple offset metal seated butterfly valve.Open and close handily and without leakage.For normal applicaiton, soft seat might be suitable and seal performance can be credible.

Quick closing butterfly valve adopts hdraulic spring or hydraulic accumulator actuators. Both two types are safely and credibly.

Both two kinds operation valve have two stage of close:fast close stage and slow close stage. At the end of closing stage, the valve will be close slowly, so to reduce water hammer and avoid slamming. This design prolong the equippments servive life.

The price of this valve is just about 30% percent of imported western similar products.

Main technical parameter
Nominal pressure (MPa) 0.6 1.0 1.6 2.5
Nominal diameter (mm) 200-1800
Testing pressure (MPa) Strength testing 0.9 1.5 2.4 3.75
Seal testing 0.66 1.1 1.76 2.75
Working pressure (MPa) 0.6 1.0 1.6
Applicable medium Water, steam, coal gas
Applicable temperature for hard seal: ≤425

Other quick closing valve: SGV fast closing steam ertracting check valve

Contact SGV for more

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Stainless steel valve-API602/API600/API6D-gate,globe,check,ball valve

Stainless steel valve-API602/API600/API6D-gate,globe,check,ball valve

A stainless steel valve is a valve, mainly made of stainless steel, which regulates the flow of a fluid, corrosive or noncorrosive (fluidized solids, slurries, gases, liquids,) by opening, closing, or partially obstructing various passageways. It is a pipeline fluid distribution system control unit, is used to change the channel cross-section and media flow direction for fluid guidance, regulating, cut-off, throttling, stopping and depressurization through diversion or excess flow.

There are many kinds of fluid control valves with various specifications, such as cut-off valves with simplest structure and valves with highly complex automatic control system, minute gauge valves and valves with 10m nominal diameter for industrial pipes.

The types of stainless steel used for valve body are typically appear with CF8, CF3, CF8M and CF3M(or their relevant forge material 304, 316, 304l,316l) these austenitic stainless steel and other special stainless steel include Duplex, Moniel, Inconel and so on.

here are kinds of the stainless steel valves divided by their structure, such as stainless steel gate valve,  check valve,  globe valve, ball valve,  butterfly valve, plug valve, safety valve, baiting valve, steam trap, needle valve, strainer,  air-operated valve and so on.

Stainless steel valve has their application scope:
Its application medium: water, steam, oil, gas, mud, all kinds of corrosive media, liquid metal and radioactive fluid , micro-alkyl, methane, ethane, fresh, ethane, …liquid heavy component ,hydrogenated liquid and so on;
Its Working temperature:-269℃~1430℃;
Its working pressure: 0.0013Mpa~1000Mpa;
It can be operated by many means: such as manual, worm gear, hydraulic, pneumatic, electric, electro-magnetic action, electric-hydraulic, pneumatic-hydraulic, electro-magnetic-hydraulic, spur-gears-drive and umbrella-gear-drive etc. It can react to pressure, temperature or other as required or start or stop without instruction of those sensing signals. Besides, the valve relies on drivers or automatic parts to enable gate parts lifting, sliding, rotating pendulum, rotation, thereby changes the area of the flow channel.

Due to stainless steel have good performance in temperature-dependent yield strength, usually stainless steel valve can have more thin thickness compare with other carbon steel valve  like API600 or API6D. For SGV general and traditional steel gate globe check ball valve, we offer more choice for guest. We have our own mold special design for API603 standard to meet client’s specific requirement to reach highest cost performance.

Standard applied:
ANSI/API 603
Corrosion-Resistant, Bolted Bonnet Gate Valves – Flanged and Butt-Welding Ends. The standard covers corrosion-resistant bolted bonnet gate valves with flanged or butt-weld ends in sizes NPS 1/2 through 24, corresponding to nominal pipe sizes in ASME B36.10M, and Classes 150, 300, and, 600, as specified in ASME B16.34.
ANSI/API 600
Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries – Modified National Adoption of ISO 10434
API SPEC 6D
Specification for Pipeline Valves. API Specification 6D is an adoption of ISO 14313, Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves. This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems.

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API 602 Forged Steel Check Valves(BS5352/MSS SP-118)

API 602, BS5352, MSS SP-118 Forged Steel Check Valves – Flanged, Flangeless, Threaded and Welding Ends

Forged steel check valves of Sangong are available in three bonnet designs.
The first design is the Bolted Bonnet, with male-female joint, spiral wound gasket, made in F304l/graphite. Ring joint gasket is available if required. The second design is in the welded bonnet, with a threaded and seal welded joint. On request a full penetration strength welded joint is available. The third design is the pressure seal bonnet, with a threaded and pressure seal bonnet joint.
The forged check valves are also available in three different design configurations. These are piston check valve type, ball check or swing check types. Besides, construction can be as follows:
1.Full port if required or conventional port, reduce port
2.Inside spring can be equipped if required
3. Disc can change for soft seal disc and ball disc.
4. Socket weld ends conform to ASME B16.11
Screwed ends(NPT) conform to ANSI/ASME B1.20.1
Butt-welded conform to ANSI B16.25
Flanged check valve ends conform to ANSI B16.5

Application standards
Design and manufacture as per:  API 602, BS5352, MSS SP-118
Test and inspection as per: API 598

API 602 – Compact Steel Gate, Globe, Check Valves – Flanged, Threaded, Welding, and Extended-Body Ends. The standard covers threaded-end, socket-welding-end, butt-welding-end, and flanged-end compact carbon steel valves in sizes NPS4 and smaller.

BS 5352 – Specification for steel wedge gate, globe and check valves 50 mm and smaller for the petroleum, petrochemical and allied industries

MSS SP-118 – Compact Steel Globe and Check Valves – Flanged, Flangeless, Threaded and Welding Ends (Chemical and Petroleum Refinery Service)

This MSS Standard Practice covers flanged end, threaded end, socked-welding end, and butt-welding end compact steel globe and check valves. The term “compact” is used to identify the valves covered by this Standard Practice as reduced seat port valves. Valve sizes correspond to nominal pipe sizes listed in ASME B36.10M and B36.19M. Flanged, flangeless, and butt weld end valves are limited to sizes NPS 4 and smaller; threaded and socked welding end valves are limited to sizes NPS 2 1/2 and smaller. Valves covered under this Standard Practice shall meet the requirements of ASME B16.34, “Standard Glass”.

API 598 Valve Inspection and Testing. The standard covers inspection, supplementary examination, and pressure test requirements for both resilient-seated and metal-to-metal seated gate, globe, plug, ball, check, and butterfly valves. Pertains to inspection by the purchaser and to any supplementary examinations the purchaser may require at the valve manufacturer’s plant.