Válvulas de esfera criogénicas de entrada superior para GNL, nitrogénio líquido e aplicações a baixa temperatura

Descrição

Size Range	DN 25–600 / 1″–24″	Body Construction	Two/Three-piece Body Design
End Connection	Flanged / Wafer / Threaded / Welded	Face to Face	ASME B16.10
Temperature Range	-196°C to +425°C / -320.8°F to +797°F	Low Temperature Testing	BS 6364
Actuation	Manual, Pneumatic, Electric	Body Material	Casting/Forged: CF8/F304, CF8M/F316, CF3/F304L, CF3M/F316L Other special materials available on request

 

Cryogenic Ball Valves for LNG

Suitable for request with low-temperature media and high sealing requirements, covering multiple fields such as energy, chemical industry, and aerospace.

Features

The core features of cryogenic ball valves are adaptability to low-temperature environments, reliable sealing performance, and a structure resistant to brittle fracture, while also ensuring ease of operation and adaptability to various working conditions.

 

Performance Characteristics:

1. High low-temperature toughness. Be made of cryogenically resistant materials (304L, 316L, etc.), eliminating the risk of brittle fracture even at -196℃ in deep cryogenic conditions.

2. Excellent sealing performance. Soft seals can achieve near-zero leakage at ANSI Class VI level, while hard seals are suitable for high-pressure and low-temperature scenarios.

3. Anti-icing design; the valve stem uses an extended structure with an insulation layer to prevent frost and ice formation on the valve stem due to the conduction of low-temperature media.

 

Structural Design Features:

1. Tight seal. The valve seat often uses an elastic compensation structure to offset material shrinkage at low temperatures, ensuring a tight seal.

2. Easy to operate. Optimized operating mechanism; uses a low-temperature-specific lubricant or a lubrication-free design to avoid jamming at low temperatures and reduce operating torque.

3. Fire safe design. The fire-resistant structural design replaces burnt soft seals, forming a temporary seal to prevent continuous leakage of the media and effectively prevent explosions or the spread of fire.

Application Compatibility Features:

1. Wide media compatibility, adaptable to cryogenic media such as LNG, liquid oxygen/nitrogen/hydrogen, with superior corrosion resistance compared to ordinary ball valves.

2. Flexible operating condition adaptation. PN10 ~ PN100, DN25 ~ DN600+, meeting the needs of various scenarios.

3. Convenient maintenance, the three-piece body and side entry design allows for online inspection of the valve ball and seat without the need for complete disassembly, reducing downtime.