PVDF Ball Valve

Product Details:

IMPORTANT PROPERTIES OF  PVDF Material
Mechanical strength and toughness
High thermal stability
High dielectric strength
Readily melt process able
Low permeability to most gases and liquids
Low flame and smoke characteristics
High abrasion resistance

Product Details:

IMPORTANT PROPERTIES OF  PVDF Material

Product Details:

Material: PVDF body, ball, and often the stem. PVDF offers excellent chemical resistance to a wide range of aggressive media, high purity, and good mechanical strength.

Size: 50 mm (This refers to the nominal bore or inner diameter of the valve). This is equivalent to approximately 2 inches (2").

Connection Type: Commonly available with flanged ends (e.g., ANSI, DIN, JIS standards) or threaded ends (e.g., NPT, BSP). Socket weld and butt weld connections are also possible. True union designs are also available for easier installation and maintenance.

Pressure Rating: Typically PN10 or PN16 (10 bar or 16 bar), but higher pressure ratings may be available depending on the specific valve. Some sources mention pressure ratings from 15 to 315 mm (this likely refers to different size ranges, not a direct pressure unit).

Temperature Range: Can typically handle temperatures up to 120°C (and sometimes higher, up to 150°C for continuous service in air for the PVDF material itself). Some sources mention a maximum working temperature of 70°C or 80°C for specific valve types.

Sealing Materials: Seats are often made of PTFE (Teflon) for chemical resistance and low friction. Seals (O-rings) can be made of FPM (Viton), EPDM, or other elastomers depending on the application fluid.

Design: Often a 2-piece or 3-piece design. Full bore (or full port) and reduced bore options are available. Some designs feature a single-piece ball and stem to prevent twisting.

Actuation: Typically manual (lever handle), but can also be automated with pneumatic or electric actuators.

Applications: Suitable for chemical processing, water treatment (including desalination and wastewater), pharmaceutical, semiconductor, food and beverage industries, and other applications involving corrosive fluids or high-purity requirements.

Product Details:

PVDF (Polyvinylidene Fluoride) ball valves are generally considered suitable for use with chromic acid, depending on the concentration and temperature.PVDF Chemical Resistance:

• PVDF exhibits excellent resistance to a wide range of aggressive chemicals, including many acids.
• It is known to be resistant to strong acids like hydrofluoric and nitric acid.
• PVDF has good resistance to oxidizing agents, which chromic acid is.
• Its chemical resistance remains stable over a broad temperature range.

Product Details:

PVDF (Polyvinylidene Fluoride) foot valves are an excellent choice for handling various acids due to the inherent properties of PVDF:

Key Properties of PVDF:

• Excellent Chemical Resistance: PVDF exhibits broad resistance to many aggressive chemicals, including most acids (both organic and inorganic), halogens, and solvents. It withstands concentrated acids like hydrochloric, sulfuric (at certain concentrations and temperatures), nitric, and hydrofluoric acid. However, its resistance to strong bases, ketones, and esters is limited.
• High Purity: PVDF is a high-purity thermoplastic, making it suitable for applications where contamination is a concern. It doesn't leach additives or stabilizers into the fluid.
• Good Thermal Stability: PVDF can maintain its mechanical properties over a broad temperature range, typically from -40°C to 150°C (depending on the specific grade and application).
• High Mechanical Strength and Toughness: PVDF offers good abrasion resistance and can withstand mechanical stress.
• UV and Weather Resistance: PVDF is resistant to ultraviolet radiation and weathering, making it suitable for outdoor or exposed applications.

Product Details:

Chemical Compatibility of PVDF with Bromine:

Based on the search results, PVDF exhibits excellent chemical resistance to bromine in various forms:

• Wet or dry bromine: Several sources explicitly state that PVDF is ideally suited for handling wet or dry bromine.
• Bromine liquid: PVDF shows resistance to technical grade bromine liquid.
• Bromine water (saturated aqueous): PVDF is resistant to saturated aqueous bromine solutions.

Therefore, a PVDF ball valve is a suitable choice for handling bromine.

High Purity: PVDF is a pure polymer without additives, making it suitable for applications where fluid purity is critical.

Wide Temperature Range: PVDF maintains its strength and chemical resistance over a broad temperature range (typically -40 to 150°C, depending on pressure and specific conditions).

Mechanical Strength: PVDF offers good mechanical strength and abrasion resistance, which is beneficial in industrial applications.

Low Permeability: PVDF has low permeability to many gases and liquids, which helps in containing hazardous substances like bromine.

Product Details:

Features:

• Free Floating Type Ball.
• Prevaricate the reverse flow of materials
• Best Suitable for Slurry Liquid
• Maintain the hydraulic pressure ensuring excellent uni-directional flow of materials

Drilling Standards:

• ASA #150
• F- Table
• Capsule Shape (Universal Drill)

Product Details:

PPH Body with PVDF Lined Ball valve.
High Temperature and Chemical Resistance Material.
Low Operating Torque.

Product Details:

Key Features of a 40 MM PVDF Ball Valve:

• Size: 40 mm (Nominal Diameter), which corresponds to a specific pipe size.
• Material: PVDF (Polyvinylidene Fluoride), offering superior resistance to many aggressive chemicals, including strong acids, solvents, and halogens. It also has high purity and good abrasion resistance.
• Design: Typically a two-piece or three-piece design, featuring a spherical ball with a bore through its center. Rotating the ball by 90 degrees opens or closes the valve.
• Seals: Usually made from PTFE (Teflon) or FPM (Viton), which are also chemically resistant and provide a tight seal.
• Connections: Available with various end connections such as:
  • Socket Fusion: For welding to PVDF pipes, creating a strong, leak-free joint.
  • Threaded: With threaded ends (e.g., BSP, NPT) for mechanical connections.
  • Flanged: With flanges for bolting to mating flanges in a pipeline.
• Pressure Rating: The pressure rating (e.g., PN16, 150 PSI) will vary depending on the specific valve design and manufacturer.
• Temperature Rating: PVDF can typically handle a wide temperature range, often from -40°C to +150°C (depending on the specific grade and pressure).
• Operation: Usually manually operated with a lever handle, but can also be automated with pneumatic or electric actuators.

Product Details:

PVDF (Polyvinylidene Fluoride) is generally considered a good material choice for foot valves used with sulfuric acid, especially in certain concentrations and temperature ranges. Here's a breakdown of why:

PVDF Chemical Resistance:

• PVDF exhibits excellent resistance to a wide range of aggressive chemicals, including sulfuric acid.
• It is known to be resistant to:
  • Concentrated sulfuric acid (hot and cold).
  • Dilute sulfuric acid.
• Referencing chemical compatibility charts from reputable PVDF manufacturers (like Petron Thermoplast, IPolymer, Kelco, and Arkema) confirms its suitability. These charts often rate PVDF as "Excellent" or "Good" for sulfuric acid.

Product Details:

PVDF (Polyvinylidene Fluoride) ball valves with flange ends are industrial valves known for their excellent chemical resistance, high purity, and performance in demanding applications.What is a PVDF Ball Valve with Flange End?

• Ball Valve: This type of valve uses a spherical ball with a bore through its center to control the flow of fluids. When the bore is aligned with the flow path, the valve is open, and when rotated 90 degrees, the solid part of the ball blocks the flow, closing the valve.
• PVDF Material: The main body and internal components of the valve are constructed from PVDF, a fluoropolymer known for its exceptional resistance to a wide range of aggressive chemicals, including strong acids, halogens, and solvents. It also offers high thermal stability and excellent abrasion resistance.
• Flange End Connection: Flanges are protruding rims or collars on the valve ends that are bolted together with a gasket in between to create a tight and secure connection to a piping system or other equipment. Flanged connections are robust and suitable for higher pressures and larger pipe sizes, allowing for easier installation and maintenance as the valve can be readily disconnected.

Product Details:

PVDF and Bromine Compatibility: PVDF is highly resistant to attack from halogens like bromine, in both liquid and gaseous states. Chemical compatibility charts consistently rate PVDF as "Excellent" or "Suitable" for use with bromine.

Foot Valve Function: A foot valve is a type of check valve installed at the bottom of a pump's suction line. It serves two main purposes:

• It prevents backflow of the fluid into the suction line when the pump stops, helping to maintain prime.
• It often includes a strainer or screen to prevent large debris from entering the pump.

PVDF Foot Valve Features: When looking for a PVDF foot valve for bromine service, consider these features:

• Material of Construction: Ensure all wetted parts (body, ball, seat, strainer) are made of PVDF or a chemically compatible material for the seals (like Viton or EPDM, depending on the specific conditions and any potential impurities).
• Design: Common designs include ball-type foot valves. Look for a robust design that can handle the specific gravity of bromine (which is quite dense, around 3.12 g/cm³).
• End Connections: PVDF foot valves are available with flanged or threaded connections (BSP or NPT). Choose the connection type that suits your piping system.
• Size Range: They are available in various sizes (e.g., 25 mm to 200 mm for flanged, 25 mm to 100 mm for threaded). Select the appropriate size for your pump and piping.
• Pressure and Temperature Ratings: Ensure the valve's pressure and temperature ratings are suitable for your operating conditions. Bromine has a boiling point of around 59°C (138°F), so consider the maximum temperature your system might reach.
• Strainer/Screen: The integrated strainer should have a mesh size appropriate for preventing debris that could damage your pump.

Product Details:

Full PVDF Ball Valve in Three Piece Design with Flange End Connection.

Suitable up to 110 Degree Temp.

For Handling very Abrassive Material also 

Specially successfully work in Sulfuric Acid 98% and Bromin Application.

Product Details:

Features:

• Free Floating Type Ball.
• Prevaricate the reverse flow of materials
• Best Suitable for Slurry Liquid
• Maintain the hydraulic pressure ensuring excellent uni-directional flow of materials

Drilling Standards:

• ASA #150
• F- Table
• Capsule Shape (Universal Drill)