Specialty Check Valves | Pressure Relief for Liquid or Air

About Our Specialty Pressure Valves

Used for liquid or air, our cartridge check valves can be incorporated into virtually any mounting style. They are easily inserted into fittings or manifolds, or can be installed in-line. Series 100 specialty check valves and/or pressure relief valves are available in a variety of styles, including barbed, micro barbed, NPT, side seal, and flanged. Sizes range from 1/8" to 5/8", and opening pressures range from 0.09 to 20 PSI.

Model #101 is the smallest of its kind and features a unique cone component for superior sealing. All of our valves are customizable by plastic body material, O-ring material, and opening spring pressure to meet specific application criteria.

Model #101

Micro Barbed - 1/8"

Fits Tubing I.D.
1/8" (3.175mm)

Length
0.375" (9.53mm)

Body Materials:
Polypropylene, Nylon, PVDF, Polycarbonate, Ultem®, Radel® - pictured

O-ring Options:
Buna-N, Silicone

Spring Pressure:
0.58 - 20 PSI

Model #111

Barbed - 1/4"

Fits Tubing I.D.
1/4" (6.35mm)

Length
0.475" (12.07mm)

Body Materials:
Polypropylene, Nylon - pictured, Acrylic, Acetal, PVDF, Polycarbonate, Ultem®, ABS

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone

Spring Pressure:
0.09 - 20 PSI

Model #118

Barbed - 1/4" (Reverse Flow of #111)

Fits Tubing I.D.
1/4" (6.35mm)

Length
0.475" (12.07mm)

Body Materials:
Polypropylene - pictured, Nylon, Acrylic, Acetal, PVDF, Polycarbonate, Ultem®, ABS

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone

Spring Pressure:
0.09 - 20 PSI

Model #103

Male NPT - 1/8"

NPT Size
0.438" (11.13mm)
Note: Fits 7/16" wrench or socket

Length
0.590" (14.99mm)

Body Materials:
Polypropylene, Nylon, Acetal, Polycarbonate - pictured, Ultem®

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone

Spring Pressure:
0.09 - 20 PSI

Model #109

Male NPT - 1/8" (Reverse Flow of #103)

NPT Size
0.438" (11.13mm)
Note: Fits 7/16" wrench or socket

Length
0.590" (14.99mm)

Body Materials:
Polypropylene, Nylon, Acetal, Polycarbonate, Ultem® - pictured

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone

Spring Pressure:
0.09 - 20 PSI

Model #122

Side Seal - 5/16"

Size O.D.
0.305" (7.747mm)

Length
0.5" (12.7mm)

Body Materials:
Polypropylene - pictured, Nylon, Acrylic, Acetal, PVDF, Polycarbonate, Ultem®, ABS, Radel®

O-ring Options:
Buna-N, EPDM, Viton®, Silicone

Spring Pressure:
0.09 - 20 PSI

Model #132

Side Seal - 3/8"

Size O.D.
0.365" (9.27mm)

Length
0.392" (9.96mm)

Body Materials:
Polypropylene - pictured, Nylon, Acrylic, Acetal, PVDF, Polycarbonate, Ultem®, ABS, Radel®

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone

Spring Pressure:
0.09 - 20 PSI

Model #152

Side Seal - 5/8"

Size O.D.
0.625" (15.88mm)

Length
0.515" (13.08mm)

Body Materials:
Polypropylene, Nylon, Acrylic - pictured, PVDF, Polycarbonate, Ultem®, ABS, Radel®

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone, Aflas® (Note: Aflas® is not available with springs less than 0.5 PSI)

Spring Pressure:
0.11 - 8 PSI

Model #154

Side Seal Flanged Inlet - 5/8"

Size O.D.
0.625" (15.88mm)

Length
0.455" (11.56mm)

Flange
0.680" (17.27mm)

Body Materials:
Polypropylene - pictured, Nylon, Acrylic, PVDF, Polycarbonate, Ultem®, ABS

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone, Aflas® (Note: Aflas® is not available with springs less than 0.5 PSI)

Spring Pressure:
0.11 - 8 PSI

Model #191

Side Seal Flanged Outlet - 5/8"

Size O.D.
0.625" (15.88mm)

Length
0.455" (11.56mm)

Flange
0.680" (17.27mm)

Body Materials:
Polypropylene, Nylon, Acrylic, PVDF, Polycarbonate, Ultem® - pictured, ABS

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone, Aflas® (Note: Aflas® is not available with springs less than 0.5 PSI)

Spring Pressure:
0.11 - 8 PSI

Model #13A

Flanged Inlet - 3/8"

Body O.D.
0.375" (9.53mm)

Length
0.640" (16.26mm)

Flange
0.42" (10.668mm)

Body Materials:
Polypropylene - pictured, PVDF, Polycarbonate

O-ring Options:
Buna-N, EPDM, Viton®, Silicone

Spring Pressure:
0.17 - 20 PSI

Model #14C

Tapered Flanged Inlet - 1/2"

Size O.D.
0.50" (12.70mm)

Length
0.69" (17.526mm)

Flange
0.62" (15.748mm)

Body Materials:
Polypropylene, Nylon - pictured

O-ring Options:
Buna-N, EPDM, Viton®, Silicone

Spring Pressure:
0.17 - 20 PSI

Model #15B

Flanged Outlet - 5/8"

Size O.D.
0.625" (15.88mm)

Length
0.58" (14.732mm)

Flange
0.685" (17.399mm)

Body Materials:
Polypropylene - pictured, Nylon, Acetal

O-ring Options:
Buna-N, EPDM, Viton®, Silicone, Fluorosilicone, Aflas®, Kalrez® (Note: Aflas® & Kalrez® are not available with springs less than 0.5 PSI)

Spring Pressure:
0.11 - 8 PSI

Get Specialty Pressure Valves from an ISO 9001:2015 Certified Company

Smart Products USA is your destination for specialty air check valves and other reliable products because we prioritize the production of high-quality, durable pumps. These pumps are also customizable to fit your specific application needs, and we proudly manufacture our products in the USA. So, when you choose Smart Products, you can be confident that your products will perform to your expectations in your essential applications.

All of our valves are made to incorporate a low-inertia poppet with double-tapered O-ring seats that achieve a fast, positive seal in ultra-low-pressure applications, and our specialty liquid check valves are no exception.

Series 100 also offers a variety of standard (smooth body) cartridge valves, so be sure to check out that alternative if it suits your application better. Get the same great product quality, just in a unit designed for a different application, when you choose our specialty pressure relief valves.

If you’re interested in our specialty check valves but have some questions for us, be sure to contact our team. We would be happy to assist you.

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. Our products are subject to continuous improvement. To achieve this goal, Smart Products reserves the right to change features, processes, materials, testing and other specifications as necessary. All plastic body material recommendations are based on standard corrosion resistant and compatibility guides.

Smart Products strongly recommends that customers test products for each application-specific use. Buyer is urged to test and investigate the compatibility of any substance used with our products prior to actual use. Seller will not be responsible for the failure of Buyer to thoroughly test and investigate the compatibility of the substances used with our products and the fitness of the products for its particular use or application.

SERIES 100 CHECK / PRESSURE RELIEF VALVES

Specialty Check Valves for Pressure Relief

About Our Specialty Pressure Valves

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VALVE OPERATION

Model #101

Model #111

Model #118

Model #103

Model #109

Model #122

Model #132

Model #152

Model #154

Model #191

Model #13A

Model #14C

Model #15B

Get Specialty Pressure Valves from an ISO 9001:2015 Certified Company

Contact Us for Specialty Air Check Valves