What types of valves does KR Valve manufacture?

KR Valve manufactures more than 500 valve products, including wafer, lug, concentric and double eccentric butterfly valves, resilient seat, metal seat and knife gate valves, dual disc, swing, lift and ball type check valves, ball valves, hydraulic water control valves such as 200X pressure reducing valves and 100X remote float valves, and Y type strainers.

Which international standards do KR valves follow?

Our range covers common international standards such as DIN F5 face-to-face gate valves, BS5163 resilient seat gate valves, BS5153 dual disc check valves, ANSI flanged strainers and PN16 pressure rated water control valves. Non-standard designs can be engineered to your drawings.

Do you offer OEM valve manufacturing?

Yes. In addition to our own KR brand, we provide OEM services, including customer branding, specified body and seat materials, actuation options and project-specific packaging.

Should I choose a wafer or a lug butterfly valve?

Wafer butterfly valves are lighter and more economical and are clamped between two flanges, making them ideal for standard water and HVAC lines. Lug butterfly valves have threaded lugs that allow dead-end service and removal of downstream piping without draining the whole line, which suits maintenance-critical systems.

How is valve quality controlled before shipment?

Every process is inspected from raw material to finished product, and 100% of finished valves are inspected before dispatch. Production plans and lead times are defined upfront through full-chain supply control.

Wholesale Pneumatic Wafer Butterfly Valve Spring Type - China Suppliers & Factory for DN40-DN600 Applications Manufacturers, Factory

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Wholesale Pneumatic Wafer Butterfly Valve Spring Type - China Suppliers & Factory for DN40-DN600 Applications Manufacturers, Factory

Type: Concentric Resilient Seated Butterfly Valve

Series: D671X

Size: DN40-DN600 / 2 – 24

Pressure Rating: PN6 / PN10 / PN16 / 5K / 10K / 150LB

Design Standard: EN 593, API 609

Service: OEM & ODM

Our pneumatic wafer butterfly valve is a highly efficient industrial valve manufactured in various sizes and pressure ratings, making it suitable for diverse applications. This valve is powered by compressed air and features a clamp type connection for ease of installation. With its compact structure and flexible operation, it is ideal for those seeking reliable performance in various fluid control applications. As a leading China valve factory, we pride ourselves on providing high-quality products to our clients worldwide. Partner with us as trusted suppliers for all your industrial valve needs.

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Product Description

Valve Type:

Wafer butterfly valve

Structure:

Concentric

Standard:

EN593

Workmanship:

Investment casting

Sealing direction:

Bidirectional

Sealing grade:

Zero leakage

Temperature:

-20°C < T < 120°C

Operation:

Pneumatic

Characteristics

Pneumatic butterfly valves use compressed air as their power source. When compressed air enters the pneumatic actuator, it pushes the piston or gear rack and other components inside the actuator to move, which in turn drives the valve stem and butterfly plate to rotate, achieving the opening or closing of the valve. By installing a valve positioner, the rotation angle of the butterfly plate can also be controlled, thereby accurately adjusting parameters such as flow rate and pressure of the medium in the pipeline.

Pneumatic wafer butterfly valve single acting spring type

Advantages

Quick Opening and Closing Response

Powered by compressed air, the pneumatic actuator drives the butterfly plate to rotate, and the opening and closing time only takes a few seconds, far faster than some manually or electrically driven valves, suitable for working conditions that require quick opening and closing (such as emergency shutdown, system switching).

Adaptive Automation Integration

It can be paired with accessories such as solenoid valves, valve positioners, limit switches, etc. to achieve remote control, proportional adjustment, and status feedback. It can easily connect to industrial automation systems such as PLC and DCS to meet the needs of intelligent production.

Low Operating Cost

Pneumatic drive system has a simple structure, low failure rate, and a wide range of compressed air sources. Compared with electric drive, it does not need to consider complex protection issues such as explosion prevention and leakage, especially suitable for flammable and explosive scenarios such as chemical and mining.

Packing

📦 Standard export wooden case packaging

Application Scenarios

The application scope of pneumatic butterfly valves covers multiple fields such as municipal engineering, industrial manufacturing, and people's livelihood supporting facilities. The core revolves around the on/off control and flow regulation of fluid media, especially suitable for working conditions with limited space and requiring automated operation.

Frequently Asked Questions

Q What is the working principle of a pneumatic wafer butterfly valve?

Pneumatic wafer butterfly valves use compressed air as the power source. When compressed air enters the pneumatic actuator, it drives the piston or gear rack to move, rotating the valve stem and butterfly plate to open or close the valve. A valve positioner can be added to enable precise flow or pressure control.

Q What temperature range is this pneumatic butterfly valve suitable for?

This valve is designed for operating temperatures ranging from -20°C to 120°C, making it suitable for most standard industrial fluid handling applications including water, air, and mild chemical media.

Q Can the pneumatic butterfly valve be integrated into automated control systems?

Yes. The valve can be paired with solenoid valves, valve positioners, and limit switches to support remote control, proportional flow adjustment, and real-time status feedback. It is fully compatible with PLC and DCS industrial automation systems.

Q What is the sealing performance of this butterfly valve?

This valve features bidirectional sealing with a zero-leakage sealing grade. The concentric structure combined with investment casting workmanship ensures a tight and reliable seal in both flow directions, meeting high-performance requirements in industrial pipelines.

Q Is this valve suitable for flammable or explosive environments?

Yes. The pneumatic drive system does not require electricity at the actuator level, eliminating risks associated with electric sparks or leakage in hazardous environments. This makes pneumatic butterfly valves especially suitable for use in chemical plants, mining operations, and other flammable or explosive scenarios.

Q How is the valve packaged for export?

Each pneumatic wafer butterfly valve is packaged in a standard export wooden case, designed to protect the product during international shipping and handling, ensuring it arrives in perfect condition at its destination.

Wholesale Pneumatic Wafer Butterfly Valve Spring Type - China Suppliers & Factory for DN40-DN600 Applications Manufacturers, Factory

Product Description

Characteristics

Advantages

Packing

Application Scenarios

Frequently Asked Questions

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