Small structure size | Butterfly valve | Factory direct sales

Small structure size | Butterfly valve | Factory direct sales

The design of butterfly valves has many particularities. Large-diameter butterfly valves are usually flange-mounted, which can better improve work efficiency. For example, butterfly valves used in heating circuits are like this. They are usually designed as screw-in valves in advance. It is the most space-saving, especially compared with ball valves.
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Exquisite craftsmanship

Exquisite craftsmanship

Stick to the spirit of ingenuity CNC precision machining 20 years of technical engineer guidance

Technological innovation

Technological innovation

High-tech foundation Insist on innovation and development Senior technical talent team

Special custom

Special custom

Torque up to 4678nm Senior technical guide selection Special customization according to customer needs

Consistent quality

Consistent quality

ISO9001 international certification Adhere to standardized production processes 1 million cycles durability test

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COVNA Industrial Automation Co., Ltd. was established in 2000, an automated valve specialist. Headquartered in Dongguan China, with 3 production bases located in Ningbo, Wenzhou and Dongguan. 

We Provide Electric Valve,Solenoid Valve,Pneumatic Valve,Electric Gate Valve,Electric Butterfly Valve,Pneumatic Control Valve,Motorized Valve,Pneumatic Knife Gate Valve,Control Valve Pneumatic,Pneumatic Actuated Valve,Motorized Operated Valve,Electric Ball Valve,Electric Actuated Ball Valve,Ball Valve,Gate Valve,Gate Valve,Butterfly Valve,Globe Valve,etc, You can browse related products and initiate consultations on our website.

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COVNA Fluorine Lined Plastic Electric Butterfly Valve

  • Industrial grade PVC butterfly valve, Polypropylene (PP) disc
  • Pressure rated 150psi at 73°F.  EPDM primary liner.
  • ANSI 150 wafer-style flange connection
  • Suitable for using with potable/drinking water
  • Quarter turn operation with mechanical stops
  • Actuator Type: ON OFF Type, Regulating Type and Intelligent Type
COVNA Fluorine Lined Plastic Electric Butterfly Valve

HK60-D-MS Stainless Steel Lug Type Electric Butterfly Valve

  • Electric operated butterfly valve composed of quarter turn electric actuator and stainless steel lugged butterfly valve
  • The connection is more secure and zero leakage
  • Widely used for petroleum, gas, chemical industry, HVAC, temperature of media: -30~180℃ (-22℉~356℉)
  • Manual override is available, diversified performance
HK60-D-MS Stainless Steel Lug Type Electric Butterfly Valve

COVNA HK60-EX-D Explosion Proof Electric Butterfly Valve

● The valve is widely used in food, environmental protection, light industry, petroleum, paper, chemicals, teaching and research equipment, and electric power industries of industrial automation control systems

● The actuator has very good sealing performance to avoid accidents caused by gas leakage

● Excellent explosion proof performance

COVNA HK60-EX-D Explosion Proof Electric Butterfly Valve

Air Operated Cast Aluminum Alloy Kitz Type pneumatic Butterfly Valve

  • Compact structure, long service life, good sealing performance, easy maintenance, quick detachable and installation
  • Auto-reset thermostatic protection in the motor
  • Open/close limit switch with cams adjustable along the whole stroke
  • Auxiliary limit switches with cams adjustable along the whole stroke
  • Safety adjustable mechanical limit switches
  • Locking of supply cables by means of cable presses
  • Stable performance, Widely used in various industries for both on-off and regulating service
  • Can be equipped with positioner, limit switch, hand wheel, solenoid valve etc.
Air Operated Cast Aluminum Alloy Kitz Type pneumatic Butterfly Valve
User Reviews

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The workmanship is in place, and the quality is very good at a glance!


Regular customers, the cooperation has been very happy!


The workmanship is fine, the size is right, the design is in place, and the service is attentive and attentive!

Frequently Asked Question

Do you have any question?

Butterfly valve is one of the most commonly used valves in industrial production pipeline systems. The main components are valve body, valve seat, valve stem, butterfly plate and transmission device. There are many types of butterfly valves, and their classification methods are also diverse.

The butterfly valve is opened and closed by operating the transmission device to rotate the valve stem, and at the same time the valve stem drives the butterfly plate to rotate. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate is connected to the valve stem. The rotation of the valve stem will drive the butterfly plate to rotate for flow control. The rotation angle is between 0 degrees and 90 degrees. When the butterfly plate rotates to 90 degrees The butterfly valve is in the fully open position in the pipeline. At this time, only the thickness of the butterfly plate is the only resistance for the fluid to pass through. The flow resistance is very small. At the same time, when the rotation angle of the butterfly plate is between 0-90, it can be used to adjust the medium. flow.

The difference between a ball valve and a butterfly valve The biggest difference between a butterfly valve and a ball valve is that the opening and closing part of the butterfly valve is a plate, while the ball valve is a ball. The valve plate of the butterfly valve and the spool of the ball valve rotate around their own axis; the ball valve The sealing surface is a spherical surface.

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