Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

API Check Valve
H64Y Self-Sealing Power Plant Check Valve
H61Y Forged Steel Y-Type Check Valve
DIN Swing Check Valve
DIN Lift Check Valve
DIN Ball Check Valve
JIS Check Valve
JIS brass Stop-Check Valve
JIS Stop-Check Valve
CBM1088 JIS Angle Stop-Check Valve
JIS Standard Stop-Check Valve
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Fax：+86（577）6738 7099
Email：Yannie@kaiweixi.com
Address：No. 1, Linxia Road, Sanqiao Industrial Zone, Oubei Street, Yongjia County, Zhejiang Province，china
Website：https://www.kaiweixi.com

API, JIS, DIN, GOST check valves

API, JIS, DIN, and GOST Check Valves,Check valves manufactured according to API, JIS, DIN, and GOST standards embody the design principles and application emphases of their respective industrial systems. The core differences among these standards lie in structural dimensions, pressure ratings, testing specifications, and material requirements. API Standards: Centered on API 6D (Pipeline Valves) and API 594 (Wafer Check Valves), API standards emphasize high pressure, high safety, and long-term reliability. They typically feature swing or dual-disc designs, robust construction, and rigorous testing (e.g., API 598), making them suitable for oil and gas pipelines, refining facilities, and petrochemical plants. JIS Standards: Primarily based on JIS B2072 and B2082, JIS standards are widely used in Japan and across Asia. Their dimensions are highly compatible with ISO standards, offering compact and lightweight designs. These valves are commonly applied in shipbuilding, general industrial machinery, water treatment, and building pipeline systems. DIN Standards: Representing the European industrial system, DIN standards are centered on the DIN 3356 series (for check valves) and DIN EN series. They are widely used in process industries such as chemicals, pharmaceuticals, energy, and water treatment, emphasizing interchangeability with European pipeline components. GOST Standards: Following specifications like ГОСТ 27477, GOST standards are mandatory in Russia and CIS markets. Their structural dimensions and pressure ratings form a unique system, generally not interchangeable with API, DIN, or JIS standards. Compliance with GOST is essential for entering energy and chemical projects in these regions.

API Check Valve

Model：
API
Specification：
2”-32”
Pressure：
Class150LB,Class300LB,Class400LB,Class600LB,Class900LB,Class1500LB
Material：
WCB、Stainless Steel

API Check Valve Overview API check valves are automatic valves strictly designed and manufactured in accordance with the American Petroleum Institute (API) standards, primarily used to prevent medium backflow in pipelines. Their core design, materials, manufacturing, and testing comply with specifications such as API 6D. The valve body is typically made of materials like cast steel or stainless steel, with structural types including swing, lift, and dual-plate designs. These valves operate automatically using the kinetic energy of the medium flow, requiring no external intervention. They open under forward flow and close rapidly under reverse flow due to gravity, spring force, or medium pressure. Specifically designed for high-pressure, large-diameter, or safety-critical pipelines in petroleum, natural gas, refining, and chemical industries, API check valves are essential equipment for ensuring unidirectional flow and preventing backflow incidents in industrial systems.API Check Valve Product Image

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H64Y Self-Sealing Power Plant Check Valve

Model：
H64Y
Specification：
DN15-DN300
Pressure：
PN200-PN320
Material：
Carbon Steel, Alloy Steel,forged steel

H64Y Self-Sealing Power Plant Check Valve Overview The H64Y Self-Sealing Power Plant Check Valve is a specialized check valve that utilizes pressure self-tightening sealing technology, specifically designed for ultra-high-pressure and high-temperature power plant systems. The valve body is forged from high-strength alloy steel, with its core innovation lying in the self-tightening sealing structure of the bonnet. This design leverages system pressure to achieve sealing—the higher the pressure, the more reliable the sealing performance. Featuring a swing-type structure, the valve opens as the disc is pushed by forward-flowing medium and closes rapidly and automatically under the disc's own weight and reverse pressure. This product is exclusively used in critical sections of supercritical and ultra-supercritical power plants, such as main steam pipelines and high-pressure feedwater systems. It can withstand extreme temperatures and pressures, effectively preventing the backflow of high-temperature, high-pressure steam or feedwater. As such, it is a core component ensuring the safe operation of modern high-parameter power generation units. H64Y Self-Sealing Power Plant Check Valve Product Image

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H61Y Forged Steel Y-Type Check Valve

Model：
H61Y
Specification：
DN10-50
Pressure：
PN6-PN64
Material：
forged steel,forged stainless steel

H61Y Forged Steel Y-Type Check Valve OverviewThe H61Y Forged Steel Y-Type Check Valve is a specially designed check valve featuring a forged steel body with internal thread or butt-weld connections, characterized by a Y-shaped flow path and an internal lift-type disc structure. The valve body is forged from materials such as A105, offering excellent mechanical properties and pressure-bearing capacity. The sealing surfaces of the disc and seat typically employ metal hard seals overlay-welded with hard alloys.The valve operates by lifting the disc open under forward medium pressure and achieving rapid closure under the disc's own weight with spring assistance. The Y-shaped design ensures a smooth flow path transition, significantly reducing flow resistance and pressure loss.Specifically engineered for small-diameter pipelines with high pressure, high flow velocity, and stringent pressure drop requirements, this valve is widely used in petrochemical plants, power stations, high-pressure boiler feedwater systems, and instrument measurement pipelines. It serves as a high-performance, compact device for preventing medium backflow.H61Y Forged Steel Y-Type Check Valve Product Image

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DIN Swing Check Valve

Model：
DIN-16/DIN-25/DIN-40/DIN-16C/DIN-25C/DIN-40C/DIN-16P/DIN-25P/DIN-40P
Specification：
DN50-DN1000
Pressure：
PN16,PN25,PN40
Material：
Cast Iron, Carbon Steel, Stainless Steel

DIN Swing Check Valve Overview The DIN Swing Check Valve is an automatic check valve designed and manufactured in strict compliance with the German Industrial Standards (DIN), featuring a swing-type structure. The valve body is typically constructed from materials such as cast iron, cast steel, or stainless steel, with its design conforming to DIN series standards (e.g., DIN 3354). The valve opens as the forward flow of the medium rotates the disc around its pivot and automatically closes under the combined action of the disc's own weight and reverse pressure.This valve can be installed either horizontally or vertically, offering low flow resistance and flexible operation. It is suitable for applications involving water, steam, oil, and various industrial media. Widely used in chemical, energy, water treatment, and other industries within DIN-compliant pipeline systems, it serves as a universal standard solution for preventing medium backflow.DIN Swing Check Valve Product Image

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DIN Lift Check Valve

Model：
DIN-16/DIN-25/DIN-40/DIN-16C/DIN-25C/DIN-40C/DIN-16T/DIN-25T/DIN-40T
Specification：
DN15-DN300
Pressure：
PN16,PN25,PN40
Material：
stainless steel, Carbon Steel

DIN Lift Check Valve Overview The DIN Lift Check Valve is an automatic check valve designed and manufactured in strict compliance with German Industrial Standards (DIN), featuring a vertical lift structure. The valve body is typically constructed from materials such as cast iron, cast steel, or stainless steel, with its design conforming to DIN series standards (e.g., DIN 3352). The valve opens as the forward pressure of the medium lifts the disc and automatically closes under the combined action of the disc's own weight and reverse pressure.Specifically designed for horizontal pipelines, this valve offers tight sealing and a simple structure. It is suitable for applications involving water, steam, oil, and non-corrosive industrial media. As a fundamental component in DIN-compliant pipeline systems for chemical, heating, water supply, and drainage industries, it effectively prevents medium backflow.DIN Lift Check Valve Product Image

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DIN Ball Check Valve

Model：
DIN-16/DIN-25/DIN-40/DIN-16C/DIN-25C/DIN-40C/DIN-16T/DIN-25T/DIN-40T
Specification：
DN50-DN300
Pressure：
PN10,PN16
Material：
Cast Iron, Carbon Steel

DIN Ball Check Valve OverviewThe DIN Standard Ball Check Valve is an automatic check valve designed and manufactured in strict compliance with German Industrial Standards (DIN), utilizing a freely floating ball as the closing element. The valve body is typically constructed from materials such as carbon steel, stainless steel, or cast iron, with its structural design conforming to DIN series standards (e.g., DIN 3356). The valve opens when the forward flow of the medium pushes the ball away from the seat and automatically closes tightly through the combined action of the ball's own weight and reverse pressure.This valve features low flow resistance and sensitive opening/closing performance, and can be installed either horizontally or vertically. It is suitable for applications involving water, steam, oil, and various industrial media. Widely used in chemical, energy, water treatment, and other industries within DIN-compliant pipeline systems, it serves as a standard solution for preventing medium backflow.DIN Ball Check Valve Product Image

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JIS Check Valve

Model：
JIS F7301/F7352
Specification：
15A-500A
Pressure：
10K；20K
Material：
WCB、Stainless Steel

JIS Check Valve OverviewJIS Check Valves are automatic valves strictly designed, manufactured, and tested in accordance with the Japanese Industrial Standards (JIS). They are primarily used to prevent backflow of media in pipelines. The valve bodies are typically made of cast iron, cast steel, or stainless steel, with structural types including swing, lift, and dual-plate designs. Their operating principle relies on the kinetic energy of forward-flowing media to open the disc. When the media flow stops or reverses, the disc automatically closes under the force of its own weight, spring action, or reverse media pressure. These valves fully comply with standards such as JIS B2003 in terms of dimensions, pressure ratings, flange connections, and material requirements. They are specifically designed for use in marine applications, Japanese industrial equipment, Japan-related engineering projects, and supporting export projects, ensuring full compatibility and high reliability with JIS-compliant piping systems.JIS Check Valve Product Image

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JIS brass Stop-Check Valve

Model：
JIS F7301/F7352
Specification：
15A-80A
Pressure：
5K,10K
Material：
Bronze

Japanese Standard brass Stop-Check Valve Overview The Japanese Standard brass Stop-Check Valve is a combination valve that complies with the Japanese Industrial Standards (JIS) and integrates the functions of both a stop valve and a check valve. It features a brass valve body and threaded connections. Internally, it incorporates the sealing mechanism of a stop valve and the automatic opening/closing mechanism of a check valve. By rotating the handwheel, the medium can be shut off or allowed to flow, while in the open position, the valve automatically prevents medium backflow through the disc’s own weight or spring force.Designed specifically for general media such as water, oil, and air, this valve is suitable for pipeline systems with a nominal pressure rating of JIS 10K or lower. Commonly used in marine applications, building water supply and drainage systems, HVAC systems, and general industrial equipment, it provides an integrated solution for scenarios requiring manual shut-off and backflow prevention.JIS Bronze Stop-Check Valve Product Image

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JIS Stop-Check Valve

Model：
JIS F7375
Specification：
50A-200A
Pressure：
5K
Material：
cast iron,ductile iron

JIS Stop-Check Valve Overview The JIS Stop-Check Valve is a multi-functional valve compliant with Japanese Industrial Standards (JIS), integrating the manual shut-off capability of a stop valve with the automatic backflow prevention function of a check valve. The valve body is typically made of cast iron, cast steel, or stainless steel. The valve disc is raised or lowered via handwheel rotation to achieve flow shut-off control, while the built-in check mechanism automatically prevents medium backflow when the valve is open.This valve strictly adheres to JIS standards such as JIS B2003 and JIS B2071, ensuring full compatibility with JIS piping systems in terms of pressure ratings, structural dimensions, and flange connections. It is specifically designed for marine vessels, Japanese industrial equipment, and related engineering projects that require both manual shut-off and automatic backflow prevention, providing dual assurance for process control and safety protection.JIS Stop-Check Valve Product Image

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CBM1088 JIS Angle Stop-Check Valve

Model：
CBM1088-10T/CBM1088-16T/CBM1088-25T/CBM1088-40T/CBM1088-60T/CBM1088-10C/CBM1088-16C/CBM1088-25C/CBM1088-40C/CBM1088-64C/CBM1088-100C
Specification：
15A-200A
Pressure：
10K-500K
Material：
Copper, Cast Iron

CBM1088 JIS Angle Stop-Check Valve Overview The CBM1088 JIS Angle Stop-Check Valve is a specially designed combination valve compliant with Japanese Industrial Standards (JIS), featuring an angled flow path configuration. The valve body is typically constructed from cast steel or stainless steel, with the inlet and outlet arranged at a 90-degree angle. This valve integrates dual functions: manual shut-off control and automatic check backflow prevention.Through handwheel rotation, the valve disc is actuated to achieve flow shut-off control, while the built-in check mechanism automatically prevents reverse flow when the valve is in the open position. Designed in strict accordance with JIS standards, this valve is specifically intended for marine piping systems, Japanese industrial equipment, and specialized pipeline layouts requiring right-angle flow direction changes. It provides comprehensive functionality—including flow redirection, flow shut-off, and backflow protection—within confined spatial constraints.CBM1088 JIS Angle Stop-Check Valve Product Image

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JIS Standard Stop-Check Valve

Model：
J41H-5K/J41H-10K/J41H-20K/J41Y-5K/J41Y-10K/J41Y-20K
Specification：
1/2”- 16”
Pressure：
5K/10K/20K
Material：
Cast steel, stainless steel

OverviewThe JIS standard stop valve is a pipeline shut-off valve strictly designed and manufactured according to Japanese Industrial Standards (JIS). It utilizes a stem to drive the disc in a vertical lifting motion along the centerline of the seat, enabling the opening, closing, and flow regulation of the medium within the pipeline. Its design and manufacturing strictly adhere to standards such as JIS B2002 (face-to-face dimensions), JIS B2210 (flange dimensions), and JIS B2071/2081 (cast iron/cast steel stop valves), ensuring precise matching and interchangeability with JIS standard piping systems. Structurally, the valve body and bonnet employ a flanged bolted connection or a pressure self-sealing design. The sealing surfaces of the disc and seat are overlaid with hard alloy and precision ground, forming a wear-resistant and corrosion-resistant metal sealing pair. This, combined with a precision-machined stem and high-quality packing, creates a reliable sealing system that effectively prevents internal and external media leakage. The valve can be equipped with manual, electric, or pneumatic actuators as required. It is widely used in process piping systems within the petroleum, chemical, light industry sectors, and in joint ventures involving Japanese partners. It is particularly suitable for the isolation and control of non-corrosive or mildly corrosive media such as water, steam, and oil, serving as a critical control component ensuring the safe and reliable operation of JIS standard piping systems. JIS Standard Stop-Check Valve Product Image

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

API Check Valve

H64Y Self-Sealing Power Plant Check Valve

H61Y Forged Steel Y-Type Check Valve

DIN Swing Check Valve

DIN Lift Check Valve

DIN Ball Check Valve

JIS Check Valve

JIS brass Stop-Check Valve

JIS Stop-Check Valve

CBM1088 JIS Angle Stop-Check Valve

JIS Standard Stop-Check Valve

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