Butterfly Inclined Seat Multi-Function Check Valve

Product Overview

Applicable Media: Water, liquids
Temperature Range: -10℃ to 120℃
Pressure Rating: PN0.6 to 1.6 MPa
Connection Standards: GB, ANSI, DIN, API, ISO, BS
Valve Body Lifespan: 50 years
Valve Body Materials: Ductile iron, carbon steel, stainless steel with anti-corrosion epoxy resin coating
Seat Materials: Stainless steel, rubber (EPDM, NBR)
Disc Materials: Carbon steel, stainless steel, ductile iron

Note: All components can be customized based on actual working conditions.

Technical Standards

Tested in accordance with GB/T13927-2008 "Industrial Valve Pressure Testing" standard.
Side flange connections comply with GB/T17241.6-2008 "Integral Cast Iron Flanges" standard, and also conform to BS4504, ISO7005, DIN2501 flange connection standards for PN1.0MPa and PN1.6MPa.
Series 13 dimensions comply with GB/T12221-2005 "Metal Valve Structural Length" for flanged butterfly valves.
Series 14 dimensions comply with GB/T12221-2005 "Metal Valve Structural Length" for flanged butterfly valves.

Features and Benefits

The valve disc is designed with a large inclination angle, and the seat is inclined to effectively improve the valve's response speed to the flow direction of the medium, better utilizing the medium's flow force and gravity.
The truss streamlined design of the valve disc increases the flow area, reduces the flow resistance coefficient, and lowers operating costs.
Adopts a unique eccentric swing structure and external buffering mechanism.
The valve disc employs a double eccentric swing structure, which helps reduce flow resistance and vibration.
The unique buffer damping cylinder effectively controls the valve closing speed, reduces and eliminates water hammer, ensuring vibration-free, noise-free, and stable operation.
Fully adaptive to flow direction switching, with no external operating system, making it low-carbon and environmentally friendly.
Regardless of the piston's position, the throttling cross-section remains annular, ensuring perfect linear adjustment characteristics.

High-Performance Butterfly Valve

Product Overview

Applicable Media: Water, oil, gas, and various corrosive media
Temperature Range: -29℃ to 450℃
Pressure Rating: PN0.6 to 6.4 MPa, Class 150 to 600
Size Range: DN5 to DN2000
Connection Standards: GB, ANSI, API
Connection Types: Flanged, wafer, welded
Valve Body Lifespan: 50 years
Valve Body Materials: Carbon steel, stainless steel, aluminum bronze, chrome-molybdenum steel, alloy steel
Disc Materials: Carbon steel, stainless steel, aluminum bronze
Seat Materials: Stellite alloy, tungsten carbide, nickel alloy, Monel, stainless steel.

Features and Benefits

The wide-angle seat design prevents excessive compression between the seat and disc, reducing wear and deformation.
Eccentric design minimizes wear on sealing surfaces, extending seal life.
Elastic metal sealing ring ensures airtight sealing.
360° circular edge sealing contour of the disc ensures maximum flow and precise control.
Adjustable flange gland packing uses TFE (up to 232℃) and graphite (up to 482℃) to prevent uneven distribution.
Self-centering disc design adjusts to temperature and thermal cycles, preventing over-tightening.
Load-bearing protective ring prevents contact between hard substances and load-bearing surfaces, reducing maintenance costs.
Blowout-proof shaft design complies with API 609 standards, enhancing operator safety.

Triple Eccentric Metal Hard-Sealed Butterfly Valve

Product Overview

Applicable Fluids: Water, oil, gas, and various corrosive media

Operating Temperature: -2℃ to 450℃

Operating Pressure: PN0.6 to 6.4MPa

Nominal Diameter: DN100 to DN3600

Connection Types: Flanged; Wafer; Welded

Connection Standards: GB, ANSI, API

Valve Body Lifespan: 50 years

Valve Body Materials: Carbon steel; Stainless steel; Aluminum bronze

Seat Materials: Stellite alloy; Tungsten carbide; Nickel alloy; Monel; Stainless steel

Disc Materials: Carbon steel; Stainless steel; Alloy steel

Note: All components can be selected in different materials based on actual operating conditions

Features and Benefits

The primary seal is a three-dimensional multi-layer metal hard seal, i.e., stainless steel to stainless steel. The friction stroke between sealing surfaces is short during valve opening or closing, resulting in a long sealing surface service life. The valve becomes tighter as it closes, ensuring reliable sealing performance. The elastic properties of the composite metal seal ring provide zero leakage performance.

The valve adopts a triple-eccentric structure design, reducing friction between sealing surfaces. It achieves triple compensation during actual operation, enhancing valve performance and extending service life.

The right-angle rotation frictionless design is realized through a unique triple-eccentric principle, eliminating friction between the seat and sealing ring during 90° rotation. It uses lead-free, oil-free self-lubricating bearings with strong load capacity, excellent wear resistance, and low friction resistance.

The valve features a truss flow-through structure with streamlined design in the disc and improved casting quality on the disc surface to reduce flow resistance. Stainless steel rings are embedded in the valve body, forming a tapered structure that facilitates fluid flow and enhances casting quality, reducing flow resistance.

The valve is coated with epoxy resin through electrostatic spraying, offering high-performance corrosion resistance and suitability for harsh operating conditions, thereby extending service life.

DB Series Soft Sealing Eccentric Butterfly Valve

Product introduction

Fluid medium: water, oil, gas and various corrosive media

Applicable temperature: -10℃～120℃

Applicable pressure: PN0.6～2.5MPa

Applicable size: DN100～DN3600

Connection method: flange

Connection standard: GB·ANSI·DIN·API·ISO·BS

Valve body life: 50 years

Valve body material: cast iron; ductile iron; anti-corrosion valve body components, blue epoxy resin coating

Valve seat material: 316 stainless steel

Valve plate material: stainless steel; ductile iron

Note: All parts can be made of different materials according to actual working conditions

Technical standards

This product complies with GB/T12238-2008 "Flange and wafer connection elastic seal butterfly valve" standard.

The test complies with GB/T13927-2008 "Industrial valve pressure test" standard.

The side flange connection complies with GB/T17241.6-2008 "Integral cast iron flange" standard. At the same time, it complies with the PN1.0MPa and PN1.6MPa flange connection standards in BS4504, ISO7005, and DIN2501.

The 13 series complies with the 13 series size regulations of flange-connected butterfly valves in GB/T12221-2005 "Metal Valve Structural Length".

The 14 series complies with the 14 series size regulations of flange-connected butterfly valves in GB/T12221-2005 "Metal Valve Structural Length".

Performance and advantages

Compared with ordinary butterfly valves, DB-type butterfly valves have no mechanical (fastener) connection inside, no possibility of mechanical connection failure, high reliability, and better adaptability to harsher working conditions.

The epoxy resin filling process makes the valve plate and the valve seat have the same interference on the entire contact surface, eliminating machining and assembly errors, uniform pressure, reducing operating torque, and reducing wear on the sealing surface.

The eccentric structure design allows the sealing surface to be instantly separated when opening and closing the valve, reducing friction and extending the service life of the seal.

The normal wear of the valve's internal sealing surface during use or minor damage caused by pipeline impurities can be adjusted through the external injection port, without disassembling the pipeline, to achieve pressure-online repair.

The valve plate adopts a truss structure design, which reduces the weight and improves the strength compared to the traditional valve plate shape. At the same time, it can maintain a larger free flow area, increase the flow coefficient, reduce the head loss, and reduce the scouring of the valve itself.

It adopts epoxy resin electrostatic spraying, high performance and corrosion resistance, can better adapt to harsh working conditions, and extend the service life.

DC Series Soft-Seal Eccentric Butterfly Valve

Product introduction

Fluid medium: water, oil, gas and various corrosive media

Applicable temperature: -10℃～120℃

Applicable pressure: PN0.6～2.5MPa

Applicable size: DN100～DN4000

Connection method: flange

Connection standard: GB·ANSI·DIN·API·ISO·BS

Valve body life: 50 years

Valve body material: cast iron; ductile iron; anti-corrosion valve body components, blue epoxy resin coating

Valve seat material: 316 stainless steel

Valve plate material: stainless steel; ductile iron

Note: All parts can be made of different materials according to actual working conditions

Technical standards

The test complies with GB/T13927-2008 "Industrial valve pressure test" standard.

Side flange connection complies with GB/T17241.6-2008 "Integral cast iron flange" standard. It also complies with PN1.0MPa and PN1.6MPa flange connection standards in BS4504, ISO7005, and DIN2501.

The 13 series complies with the 13 series dimension requirements of flange-connected butterfly valves in GB/T12221-2005 "Metal Valve Structural Length".

The 14 series complies with the 14 series dimension requirements of flange-connected butterfly valves in GB/T12221-2005 "Metal Valve Structural Length".

Performance and Advantages

The double eccentric structure design avoids wear on the sealing connection surface and maintains the integrity and long service life of the seal.

The wide-angle valve seat design avoids extrusion damage caused by tight contact between the valve seat and the valve disc, providing a longer service life.

The two-stage high-strength valve stem structure ensures easy maintenance, and the double eccentric structure makes it easy and quick to maintain the valve seat and valve disc online.

The streamlined spherical valve disc has a high flow coefficient.

The internal valve stem/valve disc drive avoids more leakage paths that may be generated by pin or bolt installation.

The flexible retaining ring provides compensatory valve seat sealing pressure on the valve disc. It is not only simple in structure and light in weight, but also has a small driving torque, easy and quick operation, and has good flow regulation function and closing sealing characteristics.

The valve stem seal is made of high-efficiency PTFE.

CHD Series Hydraulic Control Butterfly Valve

Product Overview

Fluid Media: Water, oil, gas, and various corrosive media

Applicable Temperature: -10°C to 120°C

Applicable Pressure: PN0.6 to 2.5MPa

Applicable Size: DN100 to DN4000

Connection Type: Flanged

Connection Standards: GB, ANSI, DIN, API, ISO, BS

ValveBody Lifespan: 50 years

Valve Body Material: Carbon steel; stainless steel; aluminum bronze; ductile iron

Disc Material: Ductile iron; carbon steel; stainless steel; aluminum bronze

Shaft Material: Stainless steel

Note: All components can be selected with different materials based on actual working conditions.

Technical Standards

Side flange connections comply with GB/T17241.6-2008 standard.

Features and Advantages

The CHDB gravity-weight hydraulic control / CHDC accumulator-type hydraulic control butterfly valve series offers high automation, supporting local, remote, and interlock control. It is compatible with PLC intelligent control systems, enabling various user-friendly interfaces such as text and touch screens.

Operates using its own gravity weight or two accumulators for energy storage; can automatically close the valve without external power.

Can replace pump outlet shut-off and check valves, integrating mechanical, electrical, and hydraulic components into a compact design.

Hydraulic system features low motor power, high efficiency, excellent pressure-holding performance, and extended oil pump startup intervals.

Equipped with clear opening indicators and mechanical limit adjustment mechanisms; the travel switch device is waterproof and dustproof, with concealed components for stable performance and long service life.

Can achieve interlock operation with other pipeline equipment according to preset programs.

Features a slow-closing function upon shutdown, effectively eliminating water hammer risks and protecting pumps and pipelines.