Covna Wafer Type Pneumatic Actuators Butterfly Valve Stainless Steel Air Control Butterfly Valve

• Media: Liquid, Base, Acid, Air, Oil, Gas
• Structure: Butterfly
• Application: General
• Warranty: 1 Years
• 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
• Type: Pneumatic Butterfly Valve
• Sealing Material: NBR, EPDM, FKM (Viton), 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

Size Range	2"~8", DN50~DN200
Acting Mode	Double Acting, Spring Return (Single Acting)
Operating Pressure	1.6MPa
Air Supply Pressure	2.5 to 8 bar
Angle of Rotation	90° ±4°
Actuation Time	1~2 seconds at 8.0 Bar Air Pressure
Body Material	SS304, SS316, SS316L
Sealing Material	PTFE: -20°C~180°C, PPL: -20°C~230°C
Number of Ways	2 Way
End Connection	Wafer
Applicable Media	Control of Water, Air, Gas, Oil, Liquid
Optional Accessories	Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
Application	Food & Beverage, Water & Wastewater, Ultra Pure Water, Desalination, Chemical, Textile, Pharmaceutical, Pulp & Paper

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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.