Product Overview

PVDF hot-melt socket ball valves are ball valves made of polyvinylidene fluoride (PVDF) and connected via a hot-melt socket method. They possess excellent corrosion resistance, thermal stability, and insulation properties, and are widely used in chemical, electronics, semiconductor, pharmaceutical, and water treatment industries.

Structure and Materials

Valve body, ball, and stem: All are made of PVDF, possessing good chemical stability and high-temperature resistance, and can be used continuously within a temperature range of -40℃ to +150℃.
Seals: PTFE is commonly used as the sealing seat; EPDM or FPM sealing rings are optional, suitable for various corrosive media.
Structural Forms: Mostly floating ball structures, some large-diameter models use fixed ball structures, and can be equipped with manual, pneumatic, or electric actuators.

Connection Method

Hot-melt socket connection: By heating the pipe and valve socket to approximately 260℃, the contact surfaces melt and fuse, forming a high-strength connection after cooling. Suitable for small-diameter systems from DN10 to DN110.
Other connection methods: In addition to hot-melt socket welding, flanges, butt welding, and threaded connections can be selected according to requirements to adapt to different working conditions.

Performance Characteristics

Strong Corrosion Resistance:

Resistant to various acids, alkalis, salts, and halogens, but not resistant to strong fuming acids and polar solvents.

Good Thermal Stability:

Long-term operating temperature up to 150℃, with even higher short-term temperature resistance, suitable for hot water and high-temperature chemical transportation.

Good Sealing Performance:

Utilizes a PTFE sealing seat with an elastic sealing ring to ensure zero leakage, suitable for high-purity media transportation.

Easy Installation:

Hot-melt socket welding is simple to operate, suitable for rapid on-site installation, and the welded joint strength is close to that of the base material.

Application Areas

New Energy and Semiconductors:

Suitable for hydrogen energy and photovoltaic coolant transportation, meeting the requirements for ultrapure water, specialty gases, and high-purity media transportation.

Pharmaceuticals and Chemicals:

Transports pharmaceutical raw materials, purified water, etc.; non-toxic and easy to clean; corrosion-resistant pipes are suitable for chemical media and pickling processes.

Environmental Protection and Municipal Engineering:

Used for sewage collection, waste gas treatment, and fresh air systems; acid and alkali resistant, anti-aging, and adaptable to complex working conditions.

Mining and Metallurgy:

Transports slurry, waste residue, cooling water, etc.; resistant to humid, high-temperature, and multi-impurity environments.

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PVDF hot-melt socket ball valve