Miniature check valves will prevent flow in one direction and facilitate flow in the opposite direction. Check valves are sometimes called non-return valves. Floating disk style check valves have a disk that will change position inside of the body with the flow of media. In the forward direction, the media is able to flow around the disk. In the reverse direction, the disk is pushed against the seat and prevents flow. 

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F2804400

Miniature Inline Check Valve, Floating Disk, 1/16 Inch (in) Straight Ports, Polypropylene (PP) & Silicone (Si)
List Price $3.70
F2804402

Miniature Inline Check Valve, Floating Disk, 1/16 Inch (in) Straight Ports, Polysulfone (PSU) & Acetal
List Price $3.31
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Inline Check Valve, Floating Disk, 1/16 Inch (in) Barbs, Polysulfone (PSU) & Acetal
List Price $4.20
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Inline Check Valve, Floating Disk, 1/8 Inch (in) Barbs, Polysulfone (PSU) & Acetal
List Price $4.20
F2804403

Miniature Inline Check Valve, Floating Disk, 1/16 Inch (in) Straight Ports, Polypropylene (PP) and Silicone (Si)
List Price $3.70
Description N/A

Miniature check valves will prevent flow in one direction and facilitate flow in the opposite direction. Check valves are sometimes called non-return valves. Floating disk style check valves have a disk that will change position inside of the body with the flow of media. In the forward direction, the media is able to flow around the disk. In the reverse direction, the disk is pushed against the seat and prevents flow.
Brands N/A Air Logic
Model N/A 400 N/A 402 N/A 402 N/A 402 N/A 403
Color N/A
Cracking Pressure N/A Less than 0.002 bar Less than 0.2 kPa Less than 0.8 in. H2O Less than 0.03 psi
Maximum Pressure (psi) N/A 10
Typical Tube Retention Pressure (psi)1 N/A 25 N/A 25 N/A 125 N/A 125 N/A 25
Forward Flow at 1 Pound Per Square Inch (psi) Supply Pressure N/A 0.12 scfm
Reverse Flow N/A Less than 0.20 SCIM N/A Less than 1.0 SCIM N/A Less than 1.0 SCIM N/A Less than 1.0 SCIM N/A Less than 0.20 SCIM
Recommended System Filtration N/A 5 µm
Connection Type N/A Straight Port N/A Straight Port N/A Barbed N/A Barbed N/A Straight Port
Tubing Inside Diameter (ID) N/A 1/16 in N/A 1/16 in N/A 1/16 in N/A 1/8 in N/A 1/16 in
Wetted Material(s) N/A Polypropylene (PP) Silicone (Si) N/A Acetal Polysulfone (PSU) N/A Acetal Polysulfone (PSU) N/A Acetal Polysulfone (PSU) N/A Polysulfone (PSU) Silicone (Si)
Installation Method N/A Push-In
EU RoHS 2 (Directive 2011/65/EU with amendment (EU) 2015/863) N/A Yes
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) Compliant N/A Yes
Additional Information N/A

The Housing design enables extremely responsive movements for sensitive applications. Air Logic's Miniature check valves are low profile, lightweight and fit into the tightest design envelopes. No lubrication is used in production or required for operation.

Miniature check valves are available in soft or hard seat material. Softer materials (ex. silicone in 403) seal better when closed, but harder seat materials (ex. acetal in 402) can withstand higher reverse pressure. Straight ports are generally used with 1/16" ID tubing, but may also be used in a captured design with an external O-ring seal (not included).

Miniature check valves are used in Ventilators, Printer Ink circuits, and various medical devices.
  • 1 Subject to tubing specification