2 Piece Threaded Ball Valve Material Introduction

2 Piece Threaded Ball Valve offer dual functions as both on/off switches and flow regulators, enabling convenient opening and closing of gas lines without affecting flow, ensuring flow repeatability. They open slowly, reducing the impact of transient pipeline pressure on instruments. This acts like a damper, extending the life of the needle valve. Fluorine-lined valves are specifically designed for controlling corrosive or highly corrosive media. The inner surface of the valve body is coated with a variety of fluoroplastics, suitable for various operating temperatures and fluid pipelines. They offer high strength and excellent corrosion resistance.

Polyvinyl chloride (Hard) PVC

Applicable media: Resistant to water, concentrated alkalis, non-oxidizing acids, hydrocarbons, oils, and ozone. Operating temperature: 0-55°C

Features: High mechanical strength, excellent chemical stability and dielectric properties, good oil resistance and aging resistance, easy welding and bonding, and a low price.

Polytetrachloroethylene (PTFE) (F4)

Applicable media: Strong acids, strong alkalis, strong oxidizers, etc. Operating Temperature: -200°C to 180°C

Features: Excellent chemical stability, high heat and cold resistance, and a very low coefficient of friction. It is an excellent self-lubricating material, but has relatively low mechanical properties, poor fluidity, and high thermal expansion.

Polyolefin: PO

Applicable Media: Acids, bases, salts, and certain organic solvents of various concentrations. Operating Temperature: -58°C to 80°C

Features: Currently an ideal corrosion-resistant material worldwide, it is widely used for lining large rotationally molded equipment and pipe fittings.

Polytrifluoroethylene (PCTEF) (F3)

Applicable Media: Various organic solvents, inorganic corrosive fluids (oxidizing acids). Operating Temperature: -195°C to 120°C

Features: Its heat resistance, electrical properties, and chemical stability are second only to F4, while its mechanical strength, creep resistance, and hardness are slightly better than F4.

Polypropylene: RPP

Applicable Media: Aqueous solutions of inorganic salts, dilute or concentrated solutions of inorganic acids and alkalis. Operating Temperature: -14°C to 80°C

Features: Excellent tensile and compressive strength and hardness compared to low-pressure polyethylene. Excellent rigidity, good heat resistance, easy molding, and low cost. Modified versions offer improved dynamic performance, flowability, and flexural flexibility.

Perfluoroethylene (FEP) (F46)

Applicable Media: Any organic solvent or reagent, dilute or concentrated inorganic acids, alkalis, ketones, aromatic hydrocarbons, chlorinated hydrocarbons, etc. Operating Temperature: -85°C to 150°C

Features: Mechanical, electrical, and chemical stability are essentially the same as F4, but with the advantages of higher dynamic toughness, excellent weather resistance, and radiation resistance.

Polyvinylidene chloride (PVDF) (F2)

Applicable Media: Resistant to most chemicals and solvents. Operating Temperature: -70°C to 100°C

Features: Better tensile and compressive strength than F4, with excellent bending, weather, and radiation resistance.