Covna Pneumatic Flange Globe Valve Pneumatic Fluorine Lined Control Valve with Positioner Gas Control Valve

• Temperature: -30ºC~+70ºC
• Media: Acid
• Power: Pneumatic
• Type: Pneumatic Steam Control Valve
• Warranty: 12 Months
• Size: DN20~DN300
• Model NO.: Pneumatic fluorine lined control valve
• Port Size: 3/4"~12"
• Temperature of Media: Normal Temperature
• Actuator Type: Multi-Spring Diaphragm Type
• Connection: Flanged
• Air Supply Pressure: 0.14, 0.16, 0.28, 0.4MPa
• Customized Support: OEM
• Working Pressure: 1.6, 4.0, 6.4MPa
• Medium: Air, Oil, Gas, Steam, etc
• Structure: Control
• Application: General
• Body Material: SS304, Wcb
• Trademark: COVNA
• Origin: Guangdong, China
• Production Capacity: 10000 Set/Sets Per Month

Product Description

Product Description

What is Pneumatic fluorine lined control valve?

Pneumatic fluorine (PTFE, FEP, PFA) lined control valve is composed of pneumatic diaphragm actuator,straight through single seat fluoride (PTFE,FEP,PFA) Lined structure.Pneumatic fluorine lined control valve contacted with the corrosive medium adopts the corrosion-resistant, anti-aging PTFE, PEP, PRA, the high pressure lining fluorine plastic process.Pneumatic fluoride (PTFE, FEP, PFA) lined control valve is capable of controlling the flow of acid, alkali, aqua wang and other highly corrosive media, toxic volatilegas and liquid media.Therefore, Pneumatic fluoride (PTFE, FEP, PFA) lined control valve is widely used in chemical, metallurgy,medicine and other industries.

Advantage of COVNA Pneumatic Control Valve:

Good corrosion resistance: the inner cavity of Pneumatic fluorine lined control valve body, core, seat are lined with 3mm thick fluorine (PTFE, PEP, PRA) , which can withstand strong corrosive fluid.
Good sealing performance: double sealing with PTFE bellows and packing.
The leakage quantity is little, because the Pneumatic fluorine lined control valve core and seat are soft seal, leakage was far below the national level standard.
High adjustment accuracy: Pneumatic fluorine lined control valve adopts precise and small pneumatic and electric actuators, small in size and light in weight.

Item	COVNA Pneumatic Flange Globe Valve Pneumatic Fluorine Lined Control Valve with Positioner
Acting Mode	Multi-Spring diaphragm type
Working Pressure	1.6, 4.0, 6.4MPa
Air Supply Pressure	0.14, 0.16, 0.28, 0.4MPa
Lifespan	1,000,000 (1 Million) Times
Temperature	-30°C~70°C
Control valve stem	2Cr13/17-4PH/304/316/316L
Body Material	WCB/CF8/CF8M/CF3M
Lined Material	PTFE, FEP, PFA
Control valve stem	2Cr13/17-4PH/304/316/316L
End Connection	Flanged
Flange Dimension	According to to IEC 60534
Applicable Media	Control of Water, Air, Gas, Oil, Liquid, Steam, etc
Optional Accessories	Namur Solenoid Valve, Limit Switch, F.R.L, Position Indicator, Manual Device
Application	Water & Wastewater, Ultra Pure Water, Desalination, Chemical, Textile, Pharmaceutical, Pulp & Paper, Mining, Boiler and Power Industries

Dimension:

Pneumatic Fluorine Lined Control Valve Performance:

Flow characteristic			Flow characteristic
Allowable range			30: 1
Rated Cv value			Percentage CV6.3~400 linear CV6.9~440
Allowable leakage			Soft seal: VI gradefoam grade Leakage standard: GB/T 4213
Intrinsic error(%)			±1.5
Return difference(%)			≤1.5
Dead zone(%)			≤0.6
Difference from beginning to end point(%)			±2.5
Rated travel difference(%)			≤2.5

Weight table of Pneumatic diaphragm regulating valve:

Electric Actuator

Multi-spring diaphragm actuator in direct action & reverse action. NBR rubber reinforcing polyester fabric diaphragm material. Spring range 20~100KPa, 40~200KPa, 80~240KPa. Supply pressure from 0.4MPa to 0.5MPa.

Control Valve Type\ Method	Pneumatic diaphragm actuator
		ZJHPZJHM
		Multi-spring type
Usage	Regulating type, ON-OFF type
^Air supply pressure or Power supply voltage	Air supply pressure (Spring range) 14020100Kpa G 240 (40200) Kpa G 280 (80240) Kpa G
Connector	Air pipe connector: RC1/4
Direct action	Pressure increase, stem descend, valve close.
Reaction	Pressure increase, stem ascend, valve open.
Input signal	4020mA.DCwith positioner
Lag	≤1%FSwith positioner
Linear type	2%FSwith positioner
Environmental temperature	-10+70
Pneumatic control valve Accessories	E/P, P/P valve positioner, filter regulator, valve converter, solenoid valve, limited switch Non-standard accessories, need special customized notes.

Technical Parameter of Valve Body

1. Major performance indexes shall be as shown in below table
2. Testing shall be conducted according to the specification of GB/T4213-92

Serial No.	Technical Performance	Without Positioner	With Positioner
1	Basic Error	≤±5%	≤±1%
2	Return Difference	≤3%	≤1%
3	Dead Zone	≤3%	≤0.4%
4	Leakage	ZJHP Type:≤1X10-4Rated FlowZJHM Type:≤1X10-3 Rated Flow
5	Rated Flow Coefficient	≤±10%
6	Inherent Flow Characteristic	Slope±30%

Available in Stainless Steel 304, Stainless Steel 316, Carbon Steel, Cr-Mo Steel

 

Also available in Cast Iron for your choice

 

Buyer Feedback

Company Profile

Company strengths:

1.COVNA-Specialized Manufacturer of High Quality Actuated Valve for 22 Years. 2.German imported manufacturing facilities, 100% Q.C passed before shipping, quality assured. 3.Extensive flow control project experience and various product solutions can be offered. 4.OEM / ODM service available. Can do JIS 5K / 10K, ANSI 150lb / 300lb / 600lb / 900lb standardOffer various international standard, ANSI, JIS, DIN, etc.. 5.German imported manufacturing facilities, 100% Q.C passed before shipping, quality assured. 6.Inquiry will be replied within 8 hours. 7.Custom complaints handed by one stop professional service. 8.ISO 9001 certificated, with extra certifications include CE, TUV, RoHS, SGS, BV, explosion & fire safe. 9.Industrial standard 1 year (12 months) warranty. 10.On time delivery, comprehensive warranty service, consultation to after-sales service in place.

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 openand 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.