Covna Stainless Steel Pneumatic Control Wafer Type Pneumatic Actuator Butterfly Valve

• Media: Liquid, Base, Acid, Air, Oil, Gas
• Structure: Butterfly
• Application: General
• Warranty: 12 Months
• End Connection: Wafer, Flange End, Lug
• Port Size: DN50 to DN300
• Model NO.: HK59D-1 Pneumatic Butterfly Valve
• Temperature of Media: Normal Temperature
• Air Supply Pressure: 2.5 to 8bar
• Pressure: Pn10, Pn16
• Customized Support: OEM, ODM, Obm
• Type: Pneumatic Butterfly Valve
• Sealing Material: NBR, EPDM, FKM, PTFE
• Acting Mode: Double Acting, Single Acting (Spring Return)
• Power: Pneumatic
• Actuator: Pneumatic Actuator
• Trademark: COVNA
• Origin: Guangdong, China
• Production Capacity: 10000 Set/Sets Per Month

Product Description

Products Description

Advantages:

MOQ: 1 set
22 years of valve manufacturing experience
Strong inventory, part of commission returned for bulk delay
Product quality will be guaranteed for 1 year (12 Months)
OEM service to help customers to promote their brands
Offer various international standard, ANSI, JIS, DIN, etc
Custom complaints handed by one stop professional service
Inquiry will be replied within 8 hours

 

Item	COVNA Stainless Steel Pneumatic Control Wafer Type Pneumatic Actuator Butterfly Valve
Applicable Standards	GB, DIN, ANSI, ASME, JIS, API
Size Range	DN50 to DN300, 2" to 12"
Acting Mode	Double Acting, Sping Return (Single Acting) are Available
Air Supply Pressure	2.5 to 8bar
Operating Pressure	Low Pressure, 1.0 to 1.6MPa (145 to 232PSI)
Output Torque	14 to 1170Nm
Lifespan	1,000,000 (1 Million) Times
Angle of Rotation	90° ±4°
Shell Material	Aluminum Alloy Extruded
Body Material	Cast Iron, Stainless Steel are Available
Disc Material	Cast Iron, Stainless Steel are Available
Sealing Material	NBR, EPDM, FKM (VITON), PTFE
Structure	Midline
End Connection	Wafer, Flange End
Applicable Media	Control of Water, Air, Gas, Oil, Liquid, Steam
Temp. of Media	Range from -10 to +80°C (14 to 176°F) with NBR Sealing
Ambient Temp.	Standard Type: -20 to +80°C (-4 to 176°F)
Optional Accessories	Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
Application	Food & Beverage, Refining, Desalination, Petrochemical, Chemical, Pharmaceutical, Textile, Pulp & Paper, Mining, Marine and Power Industries
Lubrication	There is no need for lubrication for standard type under normal operating conditions. Special lubricants should be used under low or high temperature operating conditions.

 

 

 

 

 

 

CI Butterfly Valve with NBR Sealing

CI Butterfly Valve with PTFE Sealing

SS304 Butterfly Valve with PTFE Sealing

Click here to ask more info about the quote and the catalog

Pneumatic Actuator

Item	Double Acting Pneumatic Actuator Air Actuator
Acting Mode	Double Acting, Spring Return (Single Acting) are Available
Air Supply Pressure	2.5 to 8bar
Output Torque	14 to 1170Nm
Lifespan	1,000,000 (1 Million) Times
Angle of Rotation	90° ±4°
Shell Material	Aluminum Alloy Extruded
Applicable Media	Filtered, Dry Compressed Air, Non-Corrosive Medium
Ambient Temp.	Standard Type: -20 to +80°C (-4 to 176°F)
Optional Accessories	Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
Application	Food & Beverage, Refining, Desalination, Petrochemical, Chemical, Pharmaceutical, Textile, Pulp & Paper, Mining, Marine and Power Industries
Lubrication	There is no need for lubrication for standard type under normal operating conditions. Special lubricants should be used under low or high temperature operating conditions.

Principle of Single Acting Actuator (Spring Return):

CCW

 

Air to port A forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

 

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

CW

 

Air to port B forces the pistons outwards, causing the springs to compress, The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Principle of Double Acting Actuator:

CCW

 

Air to Port A forces the pistons outwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port B.

 

Air to Port B forces the pistons inwards, causing the pinion to turn clockwise while the air is being exhausted from Port A.

 

CW

 

Air to Port A forces the pistons outwards, causing the pinion to turn clockwise while the air is being exhausted from Port B.

Air to Port B forces the pistons inwards, causing the pinion to turn counterclockwise while the air is being exhausted from Port A.

Principle of single-acting actuator (spring return)

Air to port B forces the pistons outwards,causing the springs to compress,The pinion turns counterclockwise
springs to compress,The pinion turns counterclockwise while air is being exhausted from port B.

NAMUR Mounting 

Direct mounted solenoid connections according to NAMUR standards.

ISO 5211 Bottom Mounting Connection

Base drilling, for valve mounting, and centering, according to ISO 5211/DIN 3337 standards.

High Visibility Position Indicator

The indicator is to remain on the actuator for continuous indication when limit switch is not being used.

Evaluation Report On 1,000,000 Times Rotation

 

Technical Parameter of Valve Body

Buyer Feedback

Company Profile

Factory Strength:

Exhibition&Finished Project

Project of Motorized Valve

 

Project of Pneumatic Actuated Valve

 

Project of Solenoid Valve

 

Packaging & Delivery

FAQ

Q: What is the difference between Normally Open and Normally Closed valves?
A: As the name suggests, Normally Open valves allow air to pass when they are not energized (or actuated). Normally Closed valves
must be actuated to allow air to pass.

Q: What is the life span of your pneumatic actuators?
A: We have passed 1 million times of product quality test, and obtained the certificate

Q: Does the air actuated valve have a manual override?
A: The air actuator does not have a manual override, but a manual override is provided with optional direct mount solenoid valves.

Q:How fast does an air actuated valve operate?
A: See product specifications. Generally, smaller valves less than 2 inch pipe size, cycle in about one second. Larger valves up
to 6 inch pipe, cycle in about 1.5 seconds. A cycle is per 90° rotation

Q:Can I add a High Temperature kit to an existing Valworx air actuated
A:Yes, you would need to select a kit matching both the actuator and valve mounting patterns. See actuator accessories

Q:Can I mechanically adjust the flow rate of an air actuated ball valve?
A: No, but we do offer pneumatic positioners with 4-20mA or 3-15PSI inputs. Positioners allow user to adjust flow 0-100%.

Q:Can I use the air actuated ball valve outside?
A: Yes, air actuated valves are weatherproof per materials of construction. Do not exceed minimum and maximum temperature
specifications.

Q:Do you have a way to confirm the air actuated valve is in the closed position? Open position?
A: Yes, we offer an optional valve monitor/limit switch box. Monitor contains (2) dry contact limit switches used to confirm open
and closed position. There is also a highly visual valve position indicator.

Q:What is the maximum allowable fluid velocity?
A:Metal valves: 5 to 10 feet/second, closer to 5ft/sec is better PVC valves: < 5 feet/second

Q:Can you customize the color of the actuator?
A: We can customize different colors, LOGO and so on according to customer's requirements.