High Purity Flanged Check Valve Graphics

High Purity Flanged Check Valve

The High Purity Flanged Check Valve is a non-return valve designed to maintain unidirectional flow in ultra-clean and chemically aggressive fluid systems. Built from high-purity materials such as PFA, PTFE, or PVDF, it ensures minimal particle generation, excellent chemical resistance, and safe operation under high-purity conditions. The flanged ends allow secure and leak-free installation in critical process pipelines.

Key Features of High Purity Flanged Check Valve

  • High-Purity Construction: Made from PFA, PTFE, or PVDF to ensure compatibility with ultra-pure and corrosive media.
  • Flanged End Connections: Provides robust and secure installation in high-purity piping systems.
  • Reliable Backflow Prevention: Spring-assisted or gravity-assisted disc design for effective sealing.
  • Low Crack Pressure: Enables smooth flow initiation with minimal resistance.
  • Compact and Lightweight: Space-saving design for easy integration in modular and skid-mounted systems.
  • Cleanroom Assembled: Manufactured in ISO Class 100 or better cleanroom environments.
  • Smooth Internal Surface: Minimizes dead zones and particle entrapment.
  • Standards Compliant: Conforms to SEMI F57, FDA, and USP Class VI purity standards.

Technical Information

Parameter Details
Size Range
1/4″ to 2″
Body Materials
PFA, PTFE, PVDF
Seal Materials
PTFE, EPDM, FKM (Viton)
Connection Type
ANSI/DIN Flanged
Check Mechanism
Spring-loaded or gravity-assisted disc
Max Operating Pressure
Up to 100 psi at 20°C
Crack Pressure
Typically 2–5 psi
Temperature Range
PFA/PTFE: up to 260°C PVDF: up to 150°C
Surface Finish (Ra)
< 15 µin (0.38 µm)
Flow Direction
Unidirectional
Compliance Standards
SEMI F57, ASTM D3222/D3307, FDA, USP Class VI
Manufacturing Environment
ISO Class 100 or better cleanroom
Typical Applications
DI water systems, chemical transfer, solvent loops, ultrapure fluid systems