Pneumatic Valve, buy COVNA Stainless Steel Pneumatic Control Wafer Type Pneumatic Actuator Butterfly Valve on China Suppliers Mobile

Product Details

COVNA Stainless Steel Pneumatic Control Wafer Pneumatic Actuator Butterfly Valve

Products Description

Advantages:
● MOQ: 1 set
● 19 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	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

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.

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.

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.

Output Torque Diagram

*NOTE:

Make sure that the torque necessary to operate the valve is compatible with the actuator torque (it depens on both actuator type and air supply).

Please note that the requested torque depends not only on the valve,but on the working conditions and the safety margins of the plant in question, too.

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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.