PTFE lined Butterfly Valve

PTFE lined butterfly valve, Gearbox operation?

PTFE lined concentric butterfly valve for corrosive fluids and are used in various industries, for example:

pure industrial water treatment, chemical industry (acids, alkalines), pharmaceutical/sanitary industry, food and beverage industry, paper industry, pulp processing, corrosive, toxic and caustic media, production of chlorine, dyes manufacturing and processing.

PTFE lined butterfly valve are widely used in the transportation of liquids and gases (including steam) in various types of industrial pipelines, especially in the use of severely corrosive media, such as: sulfuric acid, phosphoric acid, chlorine, strong alkali, aqua regia, etc. and strong corrosive medium.?

Basic properties: concentric design, compact PTFE , possible both vertical and horizontal pi- pe mounting, fully tight in shut position, suitable as shut-off and control valve, easy installation, actuating stem sealing prevents media leaking to environs, enables easy access for actuator mounting, steel PTFE top flange according to standard ISO 5211 enables variable control by means of various actuator types.?

This butterfly valve top flange standard as per ISO 5211 and users can install actuator according actual working enviorment

1. Tiny torque,Easy and fast to open and close
2. Actuator flange connection according to ISO5211
3. Bidirectional sealing, no flow direction of the medium.
4. Flow characteristics straight line, good regulation performance
5. A dial with an opening indication showing the position of the disc switch
6. 12 months quality warranty, standing the testing about Open & Close operation by tens of thousands
7. API 609 Concentric butterfly valves (soft seated) are preferred to gate valve and ball valve for low-pressure and non-critical applications as they are cheaper, lighter and easier to install.

?

Concentric butterfly valve is used in water and wastewater treatment plants, fire protection systems, and gas supply.

• Water treatment
• Water distribution
• Pumping installations
• Water transmission
• HVAC
• Aeration systems
• Clean wastewater
• Filter Installations
• Pumping installations
• Membrane installations
• Fire Protection (indoor/outdoor)
• Natural gas and flare gas

1. Wafer concentric butterfly valve?must be quipped with assembling flange .
2. The sealing surface need be protected for preventing bumps when handle the butterfly valve.
3. The sealing surface need be throughly wiped clean before installation for removing dust and dirt.
4. It will need double-flange installation when make pressure testing works as per the standard of GB/T13927-92.
5. The openning and closing stroke of control mechanism should be adjusted well before electric butterfly valve leaves factory. This will prevent any wrong direction when the power is turned on, user must manually turn it on to the half-open position before turning on the power for the first time.
6. Clockwise to close butterfly valve and counterclockwise to open butterfly valve when manual operation. And no more forces is allowed to open or close butterfly valve when the pointer is in place.
7. Put the butterfly valve into the middle of the special flange at both ends of the pipeline, and use the double head bolt through the pipeline flange and clamp butterfly valve to lock tightly, then it can be used normally.