Product Video

SMC Series 694 Polypropylene Check Valves

The 694 Series Check Valve can be used for a wide range of air and fluid applications.

  • Polypropylene
  • Viton™ seals
  • Hastelloy or 302 SS spring
  • High flow rate
  • Seat area open diameter: .438"
  • Positive seal at very low back pressure or slight vacuum
  • Cracking pressure: 1/3 psi
  • Maximum pressure: 125 psi
  • Maximum temperature: 140°F
  • Made in the USA
Stock Description Catalog Pg. Price
1/4" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
22231
1/4" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
$7.05​/Each
Save 5%12+$6.69/Each
Save 10%24+$6.34/Each
Save 15%72+$5.99/Each
P-360
$7.05​/Each
In Stock
3/8" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
22232
3/8" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
$7.25​/Each
Save 5%12+$6.88/Each
Save 10%24+$6.52/Each
Save 15%72+$6.16/Each
P-360
$7.25​/Each
In Stock
1/2" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
22210
1/2" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
$7.73​/Each
Save 5%12+$7.34/Each
Save 10%24+$6.95/Each
Save 15%72+$6.57/Each
P-360
$7.73​/Each
In Stock
1/2" FNPT Polypropylene Check Valve with FKM Seals & Hastelloy Spring
22352
1/2" FNPT Polypropylene Check Valve with FKM Seals & Hastelloy Spring
$10.45​/Each
Save 5%12+$9.92/Each
Save 10%24+$9.40/Each
Save 15%72+$8.88/Each
Internet Only
$10.45​/Each
In Stock
3/4" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
22211
3/4" FNPT Polypropylene Check Valve with FKM Seals & 302 SS Spring
$8.74​/Each
Save 5%12+$8.30/Each
Save 10%24+$7.86/Each
Save 15%72+$7.42/Each
P-360
$8.74​/Each
In Stock

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