The VDR8355 piston type cryogenic check valve represents specialized engineering for extreme temperature fluid control, operating reliably from -196°C to +121°C. This non-return valve features a guided piston plug design with integrated anti-rotation mechanism that ensures stable, predictable operation even under rapid temperature fluctuations. The PTFE seat provides Class VI leakage tightness, offering superior sealing performance for critical cryogenic applications where even minimal leakage is unacceptable. With a pressure rating of 64 Barg and compliance with ASME B16.34 standards and PED 97/23/EC regulations, this valve delivers certified performance for industrial systems handling liquefied gases and cryogenic fluids. The robust construction using ASTM A351 CF3/B10 stainless steel body with brass UNI 12164/5 plug components creates a durable assembly capable of withstanding the mechanical stresses inherent in cryogenic service.

This cryogenic check valve serves essential functio...

The VDR8355 piston type cryogenic check valve represents specialized engineering for extreme temperature fluid control, operating reliably from -196°C to +121°C. This non-return valve features a guided piston plug design with integrated anti-rotation mechanism that ensures stable, predictable operation even under rapid temperature fluctuations. The PTFE seat provides Class VI leakage tightness, offering superior sealing performance for critical cryogenic applications where even minimal leakage is unacceptable. With a pressure rating of 64 Barg and compliance with ASME B16.34 standards and PED 97/23/EC regulations, this valve delivers certified performance for industrial systems handling liquefied gases and cryogenic fluids. The robust construction using ASTM A351 CF3/B10 stainless steel body with brass UNI 12164/5 plug components creates a durable assembly capable of withstanding the mechanical stresses inherent in cryogenic service.

This cryogenic check valve serves essential functions across multiple industries where temperature extremes define operational parameters. In energy sector applications, it prevents backflow in LNG transfer systems during tanker loading, storage facility operations, and regasification processes. Industrial gas producers rely on these valves for liquid oxygen, nitrogen, and argon systems where purity and safety are paramount. The pharmaceutical and biotechnology industries utilize them in cryogenic storage and processing equipment for temperature-sensitive materials. Food processing facilities employ these valves in liquid nitrogen freezing systems, while research laboratories depend on them for cryogenic experimentation setups. Manufacturing plants handling specialty gases and chemical processors working with liquefied gases all benefit from the reliable backflow prevention this valve provides in their critical fluid handling systems.

The business value of the VDR8355 cryogenic check valve lies in its proven reliability and reduced total cost of ownership. By preventing backflow in cryogenic systems, it protects expensive downstream equipment from damage and maintains process integrity, avoiding costly production interruptions. The durable construction with quality materials extends service intervals and reduces maintenance requirements compared to standard valves not designed for extreme temperatures. Compliance with international standards provides assurance of quality and safety, simplifying procurement for regulated industries. The valve's design minimizes pressure drop while ensuring positive shutoff, contributing to energy efficiency in fluid handling systems. For businesses operating cryogenic facilities, this valve represents a trustworthy component that performs consistently under challenging conditions, supporting continuous operations and protecting valuable process fluids from contamination or loss.

Key Features:
- Piston type design with guided plug and anti-rotation system for stable operation
- Temperature range from -196°C to +121°C for cryogenic and moderate temperature service
- PTFE seat providing Class VI leakage tightness for critical sealing applications
- 64 Barg pressure rating suitable for high-pressure cryogenic systems
- ASTM A351 CF3/B10 stainless steel body with brass UNI 12164/5 plug components

Benefits:
- Reliable backflow prevention protects downstream equipment and maintains process safety
- Durable construction withstands thermal cycling and mechanical stress in cryogenic environments
- Compliance with ASME B16.34 and PED 97/23/EC ensures quality and regulatory acceptance
- Low maintenance design with long service life reduces total operating costs
- Versatile application across LNG, LOX, LIN, LPG, and industrial gas systems