Expert in High-End Damper Solutions

SNO Xunda Rapid Response Center — Offering Full-Range Control Valve Repair, Operation & Maintenance Services

SNO Xunda Rapid Response Center — Provides integrated services for pneumatic & hydraulic accessories and electric actuators

SNO delivers professional maintenance services for industrial control products. We offer factory-grade repair services for valve positioners, electric actuators, various motors, drives and other related equipment.

SNO manufactures cost-effective triple offset butterfly valves, double offset butterfly valves and concentric butterfly valves, and distributes a full range of domestic and imported control valves.

Core BusinessesCORE BUSINESS

01

Dampers

Single-blade, multi-blade round dampers and rectangular multi-blade dampers, etc.
02

Control Valve Sales & Technical Service

Manufacturing double offset, triple offset and concentric butterfly valves with selection and technical support
03

Control Valve MRO

Online/offline MRO, spare localization & lifecycle support
04

Accessory Integration Service

Integrated pneumatic & hydraulic accessories and electric actuator installation & commissioning
05

Industrial Control Repair

Factory-grade repair services for positioners, electric actuators, motors, drives and more

Featured ProductsPRODUCTS

Ventilation Butterfly Valve

Spec range DN50-DN5000, pressure ≤0.1Mpa

Leak1.5%-3%DNDN50-DN5000

Inlet Vane Control Damper

Spec range DN300-DN3000, suitable for fan inlet ducts

Leak3%DNDN300-DN3000

Rectangle Louver Damper

Multiple blades, low noise, light weight, low torque

LeakStandard Type: ≤3% Low Leakage Type: ≤1%DN100*100-3000*3000

Circle Louver Damper

Multiple blades, low noise, light weight, low torque

LeakStandard Type: ≤3% Low Leakage Type: ≤1%DNDN200-DN3000

Four-link Drive Damper

Zero leakage damper solution

Leak0%DNDN300-DN2000

High Temperature Damper

Suitable for RTO, high-temperature chimneys

Leak3%DNDN150-DN1500

Three-way Diverter Valve

Suitable for three-way diverter and distribution ducts

Leak0%-3%DNDN150-DN2000

Triple Offset Butterfly Valve

SNO manufactures cost-effective triple offset butterfly valves
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ServicesSERVICES

Control Valve Repair & O&M Service

SNO Xunda Rapid Response Center, offering full-range control valve repair, operation and maintenance services

Learn more →

Accessory Integration Service

Providing integrated pneumatic & hydraulic accessories and electric actuator installation & commissioning

Learn more →

Industrial Control Repair Service

Factory-grade repair services for positioners, electric actuators, motors, drives and more

Learn more →

On-site After-sales Service

On-site within 6 hours / 300km, providing professional on-site after-sales service

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6S Service PromiseOUR PROMISE

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Safety

Strict production & MRO safety measures, ensuring zero accident rate

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Specialty

Team with 15+ years of fluid control industry experience

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Speedy

On-site service available within 6 hours for locations within 300 km.

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Satisfy

Providing customers with caring and satisfactory services

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Special Valve Service

Providing technical services for special valve maintenance

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Sales & Customization

Providing professional selection and sales support

News & UpdatesNEWS

SNO

SNO Dampers exported to a Middle Eastern petrochemical company with successful field application.

SNO successfully supplied 75 sets of dampers for ethylene cracking furnace supporting systems to a petrochemical company in the Middle East (Lummus Heat Transfer Process Package), which achieved successful commissioning in a single run.

2026-07-22
SNO

SNO Dampers Standardly Fitted with FORCE & TORQUE Pneumatic Actuators, Leading Chinese Brand

Wuxi FORCE & TORQUE is a national high-tech enterprise specializing in the production of rotary and linear pneumatic actuators. It was awarded the title of "Specialized, Fine, Unique, and Innovative Enterprise" in Jiangsu Province in 2023. Currently, it employs 270 people, with an annual output value of 350 million RMB and an annual production capacity of 500,000 units.

2026-07-22
SNO

SNO Dampers – Optional Actuators from Multiple Top International Brands

SNO Dampers can be fitted with actuators of any international brand as per end customer requirements, including Bettis, Biffi and KTM pneumatic actuators under Emerson; Rotork pneumatic and electric actuators; Festo pneumatic rack-and-pinion and fork actuators; Automax pneumatic actuators from Flowserve; as well as Limitorque pneumatic and electric actuators.

2026-07-22
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