OverviewThe H11H Female Threaded Forged Steel Check Valve is an automatic valve designed for general and demanding industrial applications. It utilizes the flow energy of the medium itself to drive the disc in an automatic opening and closing motion along the valve's centerline, thereby achieving unidirectional flow and preventing backflow in the piping system. Its core design features a compact, straight-through flow path structure that ensures smooth media flow and minimizes pressure loss. The valve body is manufactured using a forging process and is made of high-quality materials such as carbon steel or stainless steel, ensuring excellent impact resistance and structural integrity under high-pressure conditions. Key components are produced with precision machining techniques and feature metal-to-metal or metal-to-non-metal sealing designs. Combined with the threaded connection, this allows for easy installation and disassembly from the pipeline. The valve employs a female threaded connection, attaching directly to the pipeline by screwing onto male tapered or straight threads, making it suitable for medium to high-pressure general industrial piping systems. The valve opens automatically under the forward thrust of the medium and closes automatically by the disc's own weight and reverse pressure when the flow stops or reverses, providing a reliable unidirectional shut-off function. This valve is specifically designed for industrial fluid conveyance systems involving water, steam, oil, and corrosive media. It is particularly suitable for demanding applications in the petroleum, chemical, power, metallurgical, and general industrial sectors that require a compact structure, easy installation, and long-term stable operation under high temperature, high pressure, or corrosive environments. H11H Female Threaded Forged Steel Check Valve Product Image

OverviewThe H41H flanged forged steel check valve is an automatic valve designed for general and demanding industrial operating conditions. It relies on the flow energy of the medium itself to drive the disc to perform automatic opening and closing movements along the vertical centerline of the valve body, achieving unidirectional conveyance in the pipeline system and preventing backflow. The core of its design lies in the adoption of a compact straight-through flow path structure, ensuring smooth medium flow and reducing pressure loss. The valve body is formed through a forging process and made of high-quality carbon steel, alloy steel, or stainless steel, ensuring excellent impact resistance and structural integrity under high-pressure conditions. Key components are manufactured using precision machining processes, and the sealing surfaces of the disc and seat are overlaid with iron-based alloys or Stellite cobalt-based hard alloys, offering wear resistance, high-temperature resistance, corrosion resistance, good scratch resistance, and a long service life. The valve adopts a flanged connection method, secured to pipeline flanges via bolts, making it suitable for medium to high-pressure general industrial pipeline systems. The valve opens automatically under the forward force of the medium and closes automatically by the disc's own weight and back pressure when the medium flows in reverse or stops, achieving a reliable one-way shut-off function. Specifically designed for industrial fluid conveyance systems such as water, steam, oil, and corrosive media, it features a nominal diameter range of DN15~DN50 and a nominal pressure range of PN1.6~42.0MPa (Class 150~2500Lb), with an operating temperature range of -29°C to 550°C. It is particularly suitable for demanding operating conditions in industries like petroleum, chemical, power, metallurgy, and general industry that require compact structure, convenient installation, and long-term stable operation under high temperature, high pressure, or corrosive environments.H41H Flanged Forged Steel Check Valve Product Image

OverviewThe H45H Forged Steel Y-Type Check Valve is an automatic valve specifically designed for high-pressure, high-temperature, and demanding industrial applications. It utilizes the flow energy of the medium to drive the disc in a lifting motion along the centerline of the valve body flow path, thereby achieving unidirectional flow and preventing backflow in the piping system. Its core design features a Y-type body configuration, where the disc is positioned at an angle relative to the flow path axis. This design significantly reduces fluid flow resistance and minimizes pressure loss. The valve body is manufactured using an integral forging process from high-quality materials such as carbon steel, alloy steel, or stainless steel, ensuring excellent impact resistance and structural integrity under high-temperature and high-pressure conditions. Key components are produced using precision machining techniques and feature a metal-to-metal sealing design. The sealing surfaces of the disc and seat are overlaid with hardfacing alloy and precision lapped to achieve tight and reliable sealing performance. The valve can be provided with socket weld, threaded, or flanged connections based on system requirements, making it suitable for high-parameter industrial piping systems. The valve opens automatically under the forward thrust of the medium and closes automatically by the disc's own weight and reverse pressure when the flow stops or reverses. An internal spring can be incorporated to assist closure when necessary, enabling a rapid-response unidirectional shut-off function. This valve is specifically designed for industrial fluid conveyance systems involving water, steam, oil, and corrosive media. It is particularly suitable for demanding applications in petroleum, chemical, power, metallurgical, and refinery installations that require low flow resistance, high sealing integrity, and long-term stable operation under high temperature, high pressure, or corrosive environments.H45H Forged Steel Y-Type Check Valve Product Image

OverviewThe H61H Butt-Weld Forged Steel Check Valve is an automatic valve featuring a full-bore, butt-weld end design. It relies on the energy of the flowing medium to drive the disc in an automatic opening and closing motion along the valve's centerline, thereby achieving unidirectional flow and preventing backflow in the piping system. Its core design utilizes a compact, straight-through flow path structure that ensures smooth media flow while minimizing turbulence and pressure loss. The valve body is formed through a precision forging process using high-quality materials such as carbon steel, alloy steel, or stainless steel, guaranteeing excellent impact resistance and structural integrity under high-temperature, high-pressure, and cyclic stress conditions. Key components are manufactured with precision machining techniques and feature a metal-to-metal hard sealing design. Combined with the butt-weld end connections, this creates a permanent, high-strength fused connection with the pipeline, eliminating potential leak paths. The valve utilizes a butt-weld connection method, where the valve ends are prepared with bevels and directly welded to the mating pipes, making it ideal for critical industrial piping systems involving high pressure, high temperature, corrosive media, and applications where leakage is impermissible. The valve opens automatically under the forward thrust of the medium and closes automatically by the disc's own weight and reverse pressure when the flow stops or reverses, providing a reliable unidirectional shut-off function. This valve is specifically designed for industrial fluid conveyance systems involving water, steam, oil, and corrosive media. It is particularly suitable for demanding applications in petroleum, chemical, power, metallurgy, district heating, and long-distance pipelines that require high reliability, maintenance-free operation, and long-term stable performance under high temperature, high pressure, corrosive, or erosive conditions. H61H Butt-Weld Forged Steel Check Valve Product Image

OverviewThe H61H Self-Sealing Forged Steel Check Valve is an automatic valve featuring a pressure-self-tightening bonnet seal design and a full-bore, butt-weld end connection. It relies on the energy of the flowing medium to drive the disc in an automatic opening and closing motion along the valve's centerline, thereby achieving unidirectional flow and preventing backflow in the piping system. Its core design utilizes a compact, straight-through flow path structure that ensures smooth media flow while minimizing turbulence and pressure loss. The valve body is formed through a precision forging process using high-quality materials such as carbon steel, alloy steel, or stainless steel, guaranteeing excellent impact resistance and structural integrity under high-temperature, high-pressure, and cyclic stress conditions. Key components are manufactured with precision machining techniques and feature a metal-to-metal hard sealing design. Combined with the self-sealing bonnet structure, which uses the system pressure to energize a seal ring, it achieves a reliable seal between the bonnet and the body – the higher the pressure, the tighter the seal, completely eliminating potential external leakage. The valve utilizes a butt-weld connection method, where the valve ends are prepared with bevels and directly welded to the mating pipes, making it ideal for critical industrial piping systems involving high pressure, high temperature, corrosive media, and applications where leakage is impermissible. The valve opens automatically under the forward thrust of the medium and closes automatically by the disc's own weight and reverse pressure when the flow stops or reverses, providing a reliable unidirectional shut-off function. This valve is specifically designed for industrial fluid conveyance systems involving water, steam, oil, and corrosive media. It is particularly suitable for demanding applications in petroleum, chemical, power, metallurgy, district heating, and long-distance pipelines that require high reliability, maintenance-free operation, and long-term stable performance under high temperature, high pressure, corrosive, or erosive conditions. H61H Self-Sealing Forged Steel Check Valve Product Image

OverviewThe H15H forged steel Y-type check valve is an automatic valve designed for high-pressure, high-temperature and severe industrial service. It utilizes the kinetic energy of the flowing medium to drive the disc to lift along the centerline of the valve body, ensuring one-way flow and preventing backflow in the piping system.The distinctive Y-pattern design features the disc positioned at an angle to the flow path, significantly reducing fluid resistance and minimizing pressure drop. The valve body is integrally forged from high-quality forged steel, providing excellent impact resistance and structural integrity under demanding operating conditions.Key components are precision-machined with metal-to-metal seating surfaces. The disc and seat sealing faces are hard-faced and finely ground to achieve reliable, tight shut-off. Connections are available in socket weld, threaded or flanged ends to suit various system requirements.The valve opens automatically under forward flow and closes rapidly upon flow reversal or stagnation, utilizing disc weight and backpressure for quick-response non-return function. It is specially developed for water, steam, oil and various industrial fluid services, particularly suitable for petroleum, chemical, power, metallurgy and refining applications requiring low flow resistance, high sealing integrity and long-term reliability under high temperature, high pressure or corrosive environments.H15H Forged Steel Y-Type Check Valve Product Drawing