# Inline Check Valves
## Proven Design for IV Delivery Devices
The NP Medical Inline Check Valve is the valve of choice for market-leading infusion therapy OEMs. This normally closed valve is designed to open at low fluid pressures in the flow direction and prevent backflow into the primary IV line from secondary (piggyback) sets.
With over a billion valves sold, this Inline Check Valve's time proven design with uniform 360-degree seal provides maximum protection against retrograde flow even at low pressures, and thereby reduces the risk of medication not getting to the patient;^1^ prevents dilution of drugs being administered to the patient, and secondary infusate from mixing with primary infusate;^2^ and constrains backflow of blood from cannula to the IV tubing.^2^
- Low priming volume for lower flush volumes and drug hold up
- 100% inline tested for backflow and weld leaks on automated assembly equipment
- No solvent residuals --- ultrasonically welded providing excellent leak resistance
- Wide range of available opening pressures
- Compatible with IV pumps
- Round profile well suited for automated set assembly
### Ordering Information
- **ID** = Inner Diameter
- **OD** = Outer Diameter
- **TB** = Tube Bond
| **INLET / OUTLET** | **PART NUMBER** | **AVERAGE OPENING PRESSURE** | **PRIMING VOLUME** |
|------------------------------------------|-----------------|------------------------------|--------------------|
| Tapered 0.130-0.138" (3.30-3.51mm) ID TB | 5N02-A200-ADM16 | 0.1 psi / 7 mbar | 0.14 ml |
| Tapered 0.130-0.138" (3.30-3.51mm) ID TB | 5N02-A200-ADM28 | 1.0 psi / 69 mbar | 0.28 ml |
| Tapered 0.130-0.138" (3.30-3.51mm) ID TB | 5N02-A200-ADM38 | 3.5 psi / 241 mbar | 0.25 ml |
| Tapered 0.129-0.132" (3.28-3.35mm) OD TB | 5N02-A500-ADM16 | 0.1 psi / 10 mbar | 0.36 ml |
[Contact Us to Place an Order](/contact.html)
#### TECHNICAL SPECIFICATIONS
#### MATERIALS USED
#### All Materials Are:
#### MATERIAL COMPATIBILITY 3
#### MANUFACTURING
#### COMMERCIAL AVAILABILITY
#### REFERENCES
Resources