锻钢截止阀, 直通式截止阀

Product Overview

This socket welding forged steel stop valve (also known as forged steel socket weld globe valve) is a special high-pressure industrial control valve, designed and manufactured in full compliance with major global industrial valve standards including ISO, EN, DIN, ASME and GOST. It adopts an integral forged steel valve body and socket welding (SW) end connection, exclusively developed for small-bore working conditions with strict requirements of high pressure, high temperature and high sealing performance, with a full size range from DN15 to DN50 (NPS 1/2″ to NPS 2″), and dual core functions of reliable pipeline on-off shut-off and precise flow regulation.

Relying on the socket welding structure to realize permanent leak-free connection, it completely eliminates the gasket leakage risk of flanged connections. The forged steel valve body has the core advantages of high density, high strength, impact resistance and no casting defects, with stronger pressure bearing capacity, better high temperature resistance and longer service life than conventional cast steel valves. It is widely used in harsh working conditions such as power stations, petrochemical, oil and gas fields, fine chemical and high-purity medium transmission, and is a core model of forged steel socket weld stop valve for global foreign trade procurement and industrial project high-pressure small-diameter pipeline supporting.

Core Product Features

1. Socket Weld Permanent Connection, Zero External Leakage & Ultra-High Reliability

   Adopting standard socket welding end structure, it has tight welding fit and high welding strength, can realize permanent integrated connection with pipelines, completely eliminates the hidden danger of gasket aging and loose leakage of flanged connections, and realizes full-sealing zero external leakage of pipelines. It is especially suitable for harsh working conditions of flammable, explosive, toxic, high-purity and high-pressure media, fully complying with global safety production and environmental protection regulations.

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2. Integral Forged Steel Body, High Strength for High Pressure & Temperature

   The valve body is integrally forged with international standard forged steel materials, with fine and uniform metal grains, no casting defects such as sand holes, blowholes or shrinkage porosity. Compared with cast steel valves of the same specification, it has higher density, stronger pressure bearing capacity, and better impact and fatigue resistance. It can stably adapt to complex working conditions of high temperature, high pressure and frequent opening and closing, with far better structural stability and service life than cast valves.

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3. Precision Matched Sealing Structure, Smooth Operation & Long Service Life

   The valve plug and seat adopt one-to-one precision grinding and matching process, with high fit and excellent sealing performance. Combined with flexible graphite multi-layer packing sealing system, its sealing grade meets ANSI B16.104 Class VI and EN 12266 zero leakage standards. The small-bore valve stem has a short opening and closing stroke, with smooth switching without jamming and wear resistance, suitable for long-term stable operation of high-pressure media, and greatly reduces daily operation and maintenance costs.

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4. Full Global Standard Compatibility, Precise Dimensions & Strong Adaptability

   The socket welding end dimensions fully comply with major global socket welding pipeline standards including ASME B16.11, EN 10241 and GOST. The full size range from DN15 to DN50 has accurate and unified dimensions, which can be directly connected to the pipeline systems of the same specification of customers around the world. The welding construction is convenient, perfectly adapting to the supporting needs of small-diameter high-pressure pipelines of different countries and standards.

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5. Optimized Streamlined Flow Channel, Low Flow Resistance & Precise Regulation

   The large curvature streamlined flow channel is optimized for the characteristics of small-bore high-pressure pipelines, with no flow dead angle and no medium retention, low fluid resistance and low pressure loss, effectively avoiding turbulence and water hammer impact. The valve stem has excellent lifting linearity, which can realize stepless precise regulation of fluid flow and pressure in small-diameter pipelines, with stable opening and closing without vibration and noise.

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6. Customizable Multi-Material Options, Wide Working Condition Coverage

   The valve body and wetted parts can be selected from international standard forged steel materials: A105 carbon steel, F304 stainless steel, F316 stainless steel, etc. It is stably compatible with water, high temperature and high pressure steam, thermal oil, oil products, high pressure gas, flammable and explosive/toxic media, high-purity media, weak corrosive media and other fluids, covering full scene requirements from conventional to high temperature and high pressure corrosive working conditions.

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7. Full-Process Strict Quality Control, Stable & Reliable Performance

   Forgings of each valve are subject to non-destructive testing (NDT), and all finished products pass strict hydraulic strength test and pneumatic sealing test before delivery, with stable and reliable performance in line with international general quality inspection standards. It can operate stably in various harsh working conditions for a long time without frequent maintenance.

Core Application Scenarios

1. High temperature and high pressure steam small-bore pipeline systems of power plant boilers and thermal power plants
2. Flammable, explosive and toxic medium transmission and control pipelines in petrochemical and fine chemical industries
3. High-pressure small-bore branch supporting for oil and gas field wellheads and gathering and transportation systems
4. High-pressure control pipelines for instrument sampling lines, hydraulic systems and high-purity gases
5. Ultra-high purity medium transmission pipelines in pharmaceutical and electronic industries
6. High-pressure fluid pipeline systems for ships and offshore engineering
7. Small-diameter control pipelines for industrial thermal oil and high temperature circulation systems

Product Summary