#300 Barbed #301 Barbed #302 Barbed #303 Barbed #304 Barbed #305 Barbed
#300 Barbed
#301 Barbed
#302 Barbed
#303 Barbed
#304 Barbed
#305 Barbed
#306 Barbed
#308 Barbed
#312 1/4" NPT
#314 1/8" NPT
#315 Foot Valve
#330 Manual Relief Control Valve
#306 Barbed
#308 Barbed
#312 1/4" NPT
#314 1/8" NPT
#315 Foot Valve
#330 Manual Relief

Series 300 - Modular Check Valves

Combine any two end fittings.

Series 30 - Modular End
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

 

Series 300 Check Valves
#300 - Barbed
Fits Tubing I.D. 1/16" (1.58mm)
Body Materials P, N, K, U, M
O-Ring Materials B, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 301 Check Valves
#301 - Barbed
Fits Tubing I.D. 3/32" (2.38mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 302 Check Valves
#302 - Barbed
Fits Tubing I.D. 1/8" (3.18mm)
Body Materials P, N, K, U, M
O-Ring Materials B, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 303 Check Valves
#303 - Barbed
Fits Tubing I.D. 3/16" (4.76mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-7 psi

 

Series 304 Check Valves
#304 - Barbed
Fits Tubing I.D. 1/4" (6.35mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 305 Check Valves
#305 - Barbed
Fits Tubing I.D. 5/16" (7.94mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 306 Check Valves
#306 - Barbed
Fits Tubing I.D. 3/8" (9.525mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 308 Check Valves
#308 - Barbed
Fits Tubing I.D. 1/2" (12.70mm)
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 314 Check Valves
#314 - 1/8" NPT
Body Materials P, N, K, U
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series 312 Check Valves
#312 - 1/4" NPT
Body Materials P, N, U
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

 

Series FV Foot Valve Check Valves
#315 - Foot Valve
Body Materials P, N, K, U, M
O-Ring MaterialsB, E, V, S, F, A†, K†
Spring Pressure .11-17 psi

For use with any model 300 end fitting.

 

Series FV Foot Valve Check Valves
#330 - Manual Relief Control Valve
  • Used for low pressure air applications
  • Unique design provides pressure or vacuum relief at the touch of a button
  • Threaded for panel mounting; 5/8-18 thread pitch
  • May be used in combination with any 300 series end fitting

Body Materials P
O-Ring Materials B, E, V, S, F, A, K
Spring Pressure 7 psi (recommended)
Other springs available upon request.

Note: Dimensions on this page are based on Polypropylene material. These are typically held to a +/- 0.005" tolerance. Keep in mind different plastics have different shrink rates and may vary from these tolerances.

All plastic body material 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.

View a PDF of all our valves and pumps.

For assistance
or to order call
(800) 338-0404.

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.
Materials Key
Body Materials
PolypropyleneP
Nylon N
Acrylic C
Acetal (Delrin®) A
PVDF K
Polycarbonate T
Ultem® U
ABS M

Click here to learn more about Plastic Body Materials.

O-Ring Materials
Buna-N B
Ethylene-Propylene E
Viton® V
Silicone S
Fluorosilicone F
Aflas A
Kalrez® K

† Not available with springs less than .5 PSI

 

 

 

 

 

 

 

 

 

Materials Key
Body Materials
PolypropyleneP
Nylon N
Acrylic C
Acetal (Delrin®) A
PVDF K
Polycarbonate T
Ultem® U
ABS M

Click here to learn more about Plastic Body Materials.

O-Ring Materials
Buna-N B
Ethylene-Propylene E
Viton® V
Silicone S
Fluorosilicone F
Aflas A
Kalrez® K

† Not available with springs less than .5 PSI