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Haikou Shengyano International Trade Co., Ltd.

Hainan, China
Business Type:
Trading Company
Main Products:
Pneumatic Actuator , Pneumatic Valve , Valve , Ball Valve , Butterfly Valve
Year of Establishment:
2026-05-11
Address:
Room 1807, Unit A, Building 5, Plot A1001, Yajule Golden Bay Health Education New Town Project, No. 3 Jinsha Bay Road, Xixiu Town, Xiuying District, Haikou City
OEM/ODM Service
Sample Available
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Pneumatic Actuator, Pneumatic Valve, Ball Valve manufacturer / supplier in China, offering Advanced Explosion-Proof Valve Position Switch for Remote Signal Transmission in Hazardous Plants with Cnex Certification (Ex-db-IIC-T6-GB, AC250V-16A), Reliable Heavy-Duty Explosion-Proof Limit Switch for Chemical and Petrochemical Valve Automation Systems with Cnex Dustproof Certification (SEN-510N), Reliable Explosion-Proof Limit Switch Box for Pneumatic Actuator Position Feedback in Hazardous Locations with Cnex Certification (SEN-510N, Ex-db-IIC-T6-GB) and so on.

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Latest updates from this supplier
2026-08-26

New Products

DN40 Epoxy Coated Wafer Center Line Butterfly Valve, Good Anti Rust Performance, Soft Seat, for Municipal Engineering
DN40 Epoxy Coated Wafer Center Line Butterfly Valve, Good Anti Rust Performance, Soft Seat, for Municipal Engineering
US $17 / Piece

New Products

Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard
Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard
US $4-5 / Piece

New Products

Double Offset Stainless Steel Pneumatic Butterfly Valve Lug Type DN40 DN1000 for Petrochemical & Oil Gas System CE
Double Offset Stainless Steel Pneumatic Butterfly Valve Lug Type DN40 DN1000 for Petrochemical & Oil Gas System CE
US $4-5 / Piece

New Products

Durable Explosion Proof Limit Switch Box for Valve Actuators
Durable Explosion Proof Limit Switch Box for Valve Actuators
US $4-5 / Piece

New Products

Reliable Explosion-Proof Valve Position Switch Box for Hazardous Areas
Reliable Explosion-Proof Valve Position Switch Box for Hazardous Areas
US $4-5 / Piece
2026-08-25

New Products

General Purpose Wafer Center Line Butterfly Valve, Compact Wafer Design, Long Service Life, for Civil & Industrial Pipeline
General Purpose Wafer Center Line Butterfly Valve, Compact Wafer Design, Long Service Life, for Civil & Industrial Pipeline
US $5 / Piece

New Products

Standard Wafer Centric Butterfly Valve, ISO Mounting Standard, Ductile Iron & EPDM, for Fluid Control Project
Standard Wafer Centric Butterfly Valve, ISO Mounting Standard, Ductile Iron & EPDM, for Fluid Control Project
US $5 / Piece

New Products

DN40 Epoxy Coated Wafer Center Line Butterfly Valve, Good Anti Rust Performance, Soft Seat, for Municipal Engineering
DN40 Epoxy Coated Wafer Center Line Butterfly Valve, Good Anti Rust Performance, Soft Seat, for Municipal Engineering
US $17 / Piece

New Products

Double Offset Stainless Steel Pneumatic Butterfly Valve Lug Type DN40 DN1000 for Petrochemical & Oil Gas System CE
Double Offset Stainless Steel Pneumatic Butterfly Valve Lug Type DN40 DN1000 for Petrochemical & Oil Gas System CE
US $4-5 / Piece
2026-08-24

New Products

High-Performance Double-Acting Pneumatic Actuator for Ball and Butterfly Valve Automation with ISO 9001 Certified Manufacturing (SEN AT63 DA, ISO 5211)
High-Performance Double-Acting Pneumatic Actuator for Ball and Butterfly Valve Automation with ISO 9001 Certified Manufacturing (SEN AT63 DA, ISO 5211)
US $4-5 / Piece

New Products

Corrosion-Resistant Aluminum-Alloy Pneumatic Actuator for Water Treatment and Chemical Valve Automation with ISO 9001 Certification (SEN AT105 DA/SR)
Corrosion-Resistant Aluminum-Alloy Pneumatic Actuator for Water Treatment and Chemical Valve Automation with ISO 9001 Certification (SEN AT105 DA/SR)
US $4-5 / Piece

New Products

Reliable Spring-Return Pneumatic Actuator for Fail-Safe Ball and Butterfly Valve Control with ISO 9001 Certified Production (SEN AT75 SR, NAMUR)
Reliable Spring-Return Pneumatic Actuator for Fail-Safe Ball and Butterfly Valve Control with ISO 9001 Certified Production (SEN AT75 SR, NAMUR)
US $4-5 / Piece
2026-08-21

New Products

High Speed Pneumatic Rotary Actuator, Shock Resistant Structure, ISO Mounting Standard, EAC, for Fluid Control Butterfly Ball Valves
High Speed Pneumatic Rotary Actuator, Shock Resistant Structure, ISO Mounting Standard, EAC, for Fluid Control Butterfly Ball Valves
US $4-5 / Piece

New Products

Multi Torque Pneumatic Actuator, Custom Rotation Torque Available, High Efficiency, for HVAC and Water Treatment Valves
Multi Torque Pneumatic Actuator, Custom Rotation Torque Available, High Efficiency, for HVAC and Water Treatment Valves
US $4-5 / Piece

New Products

Double Acting Pneumatic Rotary Actuator, No Spring, Fast Switch Speed, Wide Torque Range, CE EAC, for Chemical Plant Valves
Double Acting Pneumatic Rotary Actuator, No Spring, Fast Switch Speed, Wide Torque Range, CE EAC, for Chemical Plant Valves
US $4-5 / Piece

New Products

Weather Proof Pneumatic Actuator, Anti Rust Surface Treatment, Stable Torque, for Outdoor Pipeline Valve Application
Weather Proof Pneumatic Actuator, Anti Rust Surface Treatment, Stable Torque, for Outdoor Pipeline Valve Application
US $4-5 / Piece

New Products

Pneumatic Rotary Actuator with Positioner Interface, Modular Design, Easy Maintenance, EAC Approved, for Automatic Control Valves
Pneumatic Rotary Actuator with Positioner Interface, Modular Design, Easy Maintenance, EAC Approved, for Automatic Control Valves
US $4-5 / Piece
2026-08-20

New Products

Double Eccentric Butterfly Valve with Wcb and Epoxy Coating for Gas
Double Eccentric Butterfly Valve with Wcb and Epoxy Coating for Gas
US $5 / Piece

New Products

Epoxy Coated Double Eccentric Butterfly Valve Wcb Body for Gas Use
Epoxy Coated Double Eccentric Butterfly Valve Wcb Body for Gas Use
US $5 / Piece

New Products

Wcb Double Eccentric Butterfly Valve Epoxy Coated for Gas Service
Wcb Double Eccentric Butterfly Valve Epoxy Coated for Gas Service
US $5 / Piece

New Products

Double Eccentric Butterfly Valve Wcb Body Epoxy Coating for Gas
Double Eccentric Butterfly Valve Wcb Body Epoxy Coating for Gas
US $5 / Piece

New Products

Wcb Double Eccentric Butterfly Valve Ideal for Gas Medium Use
Wcb Double Eccentric Butterfly Valve Ideal for Gas Medium Use
US $5 / Piece
2026-08-19

New Products

Global Supply Traceable Production Pneumatic Spring Return Actuator for Agricultural Irrigation Project
Global Supply Traceable Production Pneumatic Spring Return Actuator for Agricultural Irrigation Project
US $4-5 / Piece

New Products

Double Acting Pneumatic Actuator with Casting Cylinder and Nickel-Plated Shaft
Double Acting Pneumatic Actuator with Casting Cylinder and Nickel-Plated Shaft
US $4-5 / Piece

New Products

Lug Style Double Offset Butterfly Valve, ASTM A216 Wcb Body, Gas Service, High Performance
Lug Style Double Offset Butterfly Valve, ASTM A216 Wcb Body, Gas Service, High Performance
US $5 / Piece

New Products

Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
US $5 / Piece
2026-08-18

New Products

Lug Style Double Offset Butterfly Valve, ASTM A216 Wcb Body, Gas Service, High Performance
Lug Style Double Offset Butterfly Valve, ASTM A216 Wcb Body, Gas Service, High Performance
US $5 / Piece

New Products

Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
US $5 / Piece

New Products

Flanged Type Durable Double Eccentric Butterfly Valve with Wcb for Gas Applications
Flanged Type Durable Double Eccentric Butterfly Valve with Wcb for Gas Applications
US $5 / Piece

New Products

Heavy-Duty Double Pneumatic Actuator with Nickel-Plated Steel and Casting Features for Ball and Butterfly Valves with Rack-and-Pinion Rotary Control Systems
Heavy-Duty Double Pneumatic Actuator with Nickel-Plated Steel and Casting Features for Ball and Butterfly Valves with Rack-and-Pinion Rotary Control Systems
US $4-5 / Piece

New Products

Industrial Rotary Limit Switch Box with Micro Switches for Local and Remote Valve Position Indication, CSA-Certified, NEMA-4X and IP67-Protected Design
Industrial Rotary Limit Switch Box with Micro Switches for Local and Remote Valve Position Indication, CSA-Certified, NEMA-4X and IP67-Protected Design
US $9.8-10 / Piece
2026-08-17

New Products

Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard with Reliable Sealing
Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard with Reliable Sealing
US $4-5 / Piece

New Products

Premium Pneumatic Double Offset Butterfly Valve for Power and Environmental Engineering with ISO 9001 Certified Manufacturing (Flanged-or-Lug, Zero-Leakage)
Premium Pneumatic Double Offset Butterfly Valve for Power and Environmental Engineering with ISO 9001 Certified Manufacturing (Flanged-or-Lug, Zero-Leakage)
US $5 / Piece

New Products

High-Performance Pneumatic Double Offset Butterfly Valve for Power Plant Pipeline Control with ISO 9001 Certified Manufacturing (1.5-14-Inch, Zero-Leakage)
High-Performance Pneumatic Double Offset Butterfly Valve for Power Plant Pipeline Control with ISO 9001 Certified Manufacturing (1.5-14-Inch, Zero-Leakage)
US $5 / Piece

New Products

Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard with Low Friction
Lug End Pneumatic Control Butterfly Valve Double Offset Butterfly Valve for Oil Gas Pipeline Control GB/T Standard with Low Friction
US $4-5 / Piece

New Products

Quarter Turn Spring Return Pneumatic Actuator for Industrial Control Valve Water Treatment Petrochemical Pipeline CE
Quarter Turn Spring Return Pneumatic Actuator for Industrial Control Valve Water Treatment Petrochemical Pipeline CE
US $4-5 / Piece
2026-08-14

New Products

Premium Pneumatic Double Offset Butterfly Valve for Power and Environmental Engineering with ISO 9001 Certified Manufacturing (Flanged-or-Lug, Zero-Leakage)
Premium Pneumatic Double Offset Butterfly Valve for Power and Environmental Engineering with ISO 9001 Certified Manufacturing (Flanged-or-Lug, Zero-Leakage)
US $5 / Piece

New Products

Heat Resistant Oil Resistant Pneumatic Spring Return Actuator for Food Processing Line
Heat Resistant Oil Resistant Pneumatic Spring Return Actuator for Food Processing Line
US $4-5 / Piece

New Products

Reliable Explosion-Proof Valve Position Switch Box for Hazardous Areas
Reliable Explosion-Proof Valve Position Switch Box for Hazardous Areas
US $4-5 / Piece

New Products

Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
Flanged Type Double Eccentric Butterfly Valve for Gas Wcb Body Durable Coating
US $5 / Piece

New Products

Flanged Type Pneumatic Actuated Double Offset Butterfly Valve - Reliable on/off Control, High Performance
Flanged Type Pneumatic Actuated Double Offset Butterfly Valve - Reliable on/off Control, High Performance
US $5 / Piece

Product Catalogs

Haikou_Product_Catalog.pdf
Haikou_Product_Catalog.pdf
2026-08-13

New Products

Heavy Duty Large Caliber Double Offset Eccentric Butterfly Valve for Pumping Station
Heavy Duty Large Caliber Double Offset Eccentric Butterfly Valve for Pumping Station
US $4-5 / Piece

New Products

Industrial Pneumatic Double Eccentric Lug Butterfly Valve, Metal Seal Structure, Erosion Resistant, Compliant with International Pipeline Valve Standards
Industrial Pneumatic Double Eccentric Lug Butterfly Valve, Metal Seal Structure, Erosion Resistant, Compliant with International Pipeline Valve Standards
US $4-5 / Piece

New Products

Pneumatic Control Valve PTFE High Performance Double Eccentric Pneumatic Actuator High Temperature Steam ISO9001
Pneumatic Control Valve PTFE High Performance Double Eccentric Pneumatic Actuator High Temperature Steam ISO9001
US $4-5 / Piece

New Products

Flanged Connection Double Offset Butterfly Valve Pneumatic Drive Stainless Steel NBR Seat for Mining Medium Pipeline ISO9001 Standard
Flanged Connection Double Offset Butterfly Valve Pneumatic Drive Stainless Steel NBR Seat for Mining Medium Pipeline ISO9001 Standard
US $4-5 / Piece

New Products

Anti Aging Shock Resistant Double Offset Eccentric Butterfly Valve for Urban Pipeline
Anti Aging Shock Resistant Double Offset Eccentric Butterfly Valve for Urban Pipeline
US $4-5 / Piece
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