PTFE/PFA/FEP Lined Clamp Double Flap Butterfly Type Check Valve

• Customization: Available
• Media: Acid
• Temperature: Ordinary Temperature
• Model NO.: FRH76F46
• Material: Fluorine Lining
• Connection Form: Clamp
• Structure: Butterfly
• Pressure: Ordinary Pressure
• Function: Sfcv Rubber Lobe
• Sealing Form: Self-Sealing
• Flow Direction: Bidirectional
• Standard: DIN
• Application: Industrial Usage, Water Industrial Usage
• Face to Face: Size Can Be Customized
• Color: Colors Can Be Customized
• Fluorine-Lined Material: According to Customer Requirements
• Co (Certificate of Origin): Authorized by The Chinese Customs
• Transport Package: Wooden Box
• Specification: DN20~DN500
• Trademark: FREE-VALVE
• Origin: China
• HS Code: 8481809000
• Production Capacity: 200 Set/Month
• Package Size: 800.00cm * 800.00cm * 650.00cm
• Package Gross Weight: 80.000kg

Product Description

General

FREE-VALVE PTFE/PFA/FEP Lined Clamp Double Flap Butterfly type Check Valve is a kind of automatic valve that relies on the flow of the medium itself, and automatically opens and closes the valve double flap to prevent the reverse flow of the medium. The valve adopts the double disc type, the butterfly plate is two semi-circle, and the spring is used to force the return. Due to the lining of corrosion-resistant material, the valve has good corrosion resistance and reliable sealing performance, and is suitable for all kinds of industrial pipeline systems with strong corrosive media.
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Features

1. Compact design of the dual flap check valve allows easy installation and service in tight spaces.
2. Easy to install,the valve can be used for horizontal and vertical installation.
3. The valve disc adopts dual type, which can be quickly closed under the elastic force of the spring.
4. A high torsion spring ensures the valve closes as quickly as possible,Springs provide perfect tightness even at low differential pressure.Low water hammer pressure.
5. The lining material is optional, which can be applied to a variety of media ,the valve has good corrosion resistance.

Technical Specification

  

1	Size Range	DN15~DN600
2	Nominal pressure	Class 150 /PN10/PN16
3	Applicable Temperature	-10ºC~+180ºC
4	Connection Type	Wafer
5	Lining Material	PTFE , PFA , FEP
6	Ball	PTFE
7	Seat	PTFE , PFA , FEP
8	Pressure test	GB/T13927, API598
9	Face to Face	GB/T12221, ASME B16.10

 

Temperature Range

 

Lining material	Service temperature,°C	Application medium
NR	-10°C~+85°C	exclusive of strong oxidants:fluorosilicic acid, phenolic acid, 30 percent sulfuric acid, 80 percent phosphoric acid, alkali, salt, gold plating solution, sodium hydroxide, potassium hydroxide, neutral salt aqueous solution, 10 percent sodium hypochlorite, ammonia, most alcohols, organic acids and aldehydes,ect
EPDM	≤120°C	It has the similar acid and alkaline properties of natural glue, and it is very good for low pressure steam, hot water and cold water.
PTFE(F4)	≤180°C	Strong acid, strong base, strong oxidant, organic solvent, etc
FEP(F46)	≤120°C	Any organic solvents or reagents, xi or concentrated inorganic acids, bases, ketones, aromatics, chlorinated hydrocarbons, etc
PFA	≤180°C	Strong acid,strong alkali,Strong oxidant, organic solvent, etc

 

Application

FREE-VALVE PTFE/PFA/FEP Lined Clamp Double Flap Butterfly type Check Valve is known as dual plate check valves are mechanical valves that permit gases and liquids to flow in only one direction ,preventing process flow from reversing.The valve has excellent anti-corrosive performance and is suitable for a variety of strong corrosion conditions, and is widely used in petroleum, chemical, dyeing, pesticide, acid and alkali making industries, etc.