Specifications for a Non-Return Valve (NRV):
Material:
Body: Solid Brass Body to resist corrosion.
Seals/Gaskets: Compatible with medical gases .
Spring: Stainless steel for durability.
Size:1/2 Male to 1/2 Female.
Inlet and Outlet Connections: 1/2" BSP/NPT threads (as per system requirement).
Pressure Rating:
Operating pressure: 410 bar (typical range for medical gas systems).
Maximum pressure: Should withstand up to 15 bar for safety.
Flow Characteristics:
Low-pressure drop to ensure uninterrupted gas flow.
Unidirectional flow with clear indication of the flow direction (arrow marking on the body).
Standards and Certifications:
Compliant with ISO 13485 for medical gas pipeline systems.
CE-marked or UL-listed for medical use.
Temperature Range:
Operating temperature: -20C to +60C, considering gas temperature variation.
Maintenance and Durability:
Designed for low maintenance.
Long service life under continuous operation.
Special Features:
Internally polished surfaces to minimize contamination risks.
Resistant to oxygen ignition in oxygen-rich environments.
Applications:
Used to prevent backflow of gases in medical gas systems.
Suitable for oxygen, nitrous oxide, medical air, vacuum, and other gases used in healthcare facilities.
Installation:
Easy to install and maintain in confined spaces.
Compact design for medical manifold systems.
Let me know if you'd like specific recommendations or more details on particular brands or suppliers!