Check Valves
Series 300 - Modular Check Valves
Combine any two end fittings.
May use the same configuration
on both ends.
With its flexible design, the popular Series 300 modular check valves allows you to mix and match end fitting configurations – i.e. NPT with barbed style – to meet the widest range of possibilities. For pump applications, Model #315 (foot/filtering valve) is easily mated with any Series 300 end fitting.
Smart Products modular check valve options include:
- Barbed, NPT, and foot valve styles
- Wide range of plastic, o-ring, and spring materials
- Choice of precision opening pressures
Refer to the 
Materials Selection Chart for standard spring rates and materials. Other spring opening pressures and materials available by special order.
#300 |
#301 |
#302 |
#303 |
#304 |
#305 |
#306 |
#308 |
#314 |
#312 |
#315 |
| Barbed | ||
|---|---|---|
| Model # | Fits Tubing I.D. | |
| 300 | 1/16" | 1.58mm |
| 301 | 3/32" | 1.38mm |
| 302 | 1/8" | 3.18mm |
| 303 | 3/16" | 4.76mm |
| 304 | 1/4" | 6.35mm |
| 305 | 5/16" | 7.94mm |
| 306 | 3/8" | 9.35mm |
| 308 | 1/2" | 12.70mm |
| Male NPT | |
|---|---|
| Model # | NPT Size |
| 314 | 1/8" NPT |
| 312 | 1/4" NPT |
| Foot Valve | |
|---|---|
| #315* | Foot Valve |
| *Use with any model 300 end fitting | |
View Materials Selection Chart
Materials recommendations are based on standard corrosion resistant and compatibility guides. In a continuing pledge to provide customers with quality products, Smart Products requires that products are customer-tested and approved for each application-specific use.
For expert technical assistance or to order a sample…
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Check Valves
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Check Valves Resources
Key Features:
- Our most popular model provides maximum versatility with the widest range of options.
- Used for liquid or air.
- Eliminates leak prone adapter by combining fitting and check valve in one.
- Flexible modular design incorporates check valve cartridge model 150 or 160 with a combination of any two 300 series end fittings to meet specific design requirements; may use the same configuration on both ends.
- Build your own custom check valve by mixing and matching our standard components and materials.