SMC 815 Series 1/2" Brass Check Valves

The 815 Check Valve incorporates a piston with an embedded O-ring that seals on the seat. Pressure in the flow direction moves the piston and seal off the seat and exposes the cross holes in the piston. The flow arrow on the body will point from inlet to outlet.

  • Brass body & piston
  • Viton™, Buna-N or EPDM seals
  • Beryllium copper retainer
  • Good for a wide range of air & fluid applications
  • .437" diameter through hole in ball
  • Positive seal at low back pressure or slight vacuum
  • Cracking pressure: 1/3 psi or 1 psi
  • Maximum pressure: 500 psi
  • Maximum temperature: 250°F (Buna-N), 300°F (EPDM) & 375°F (Viton™)
  • Made in the USA
Stock Description Catalog Pg. Price
1/2" FNPT  x 1/2" FNPT Series 815 Brass Check Valve with Buna-N Seals - 1 PSI
22433
1/2" FNPT x 1/2" FNPT Series 815 Brass Check Valve with Buna-N Seals - 1 PSI
$20.29​/Each
Save 5%10+$19.27/Each
Save 10%20+$18.26/Each
Save 15%60+$17.24/Each
Internet Only
$20.29​/Each
In Stock
1/2" FNPT  x 1/2" FNPT Series 815 Brass Check Valve with Buna-N Seals - 1/3 PSI
22434
1/2" FNPT x 1/2" FNPT Series 815 Brass Check Valve with Buna-N Seals - 1/3 PSI
$21.30​/Each
Save 5%10+$20.23/Each
Save 10%20+$19.17/Each
Save 15%60+$18.10/Each
Internet Only
$21.30​/Each
In Stock
1/2" FNPT  x 1/2" FNPT Series 815 Brass Check Valve with EPDM Seals - 1 PSI
22435
1/2" FNPT x 1/2" FNPT Series 815 Brass Check Valve with EPDM Seals - 1 PSI
$20.68​/Each
Save 5%10+$19.64/Each
Save 10%20+$18.61/Each
Save 15%60+$17.57/Each
Internet Only
$20.68​/Each
In Stock
1/2" FNPT  x 1/2" FNPT Series 815 Brass Check Valve with Viton™ Seals - 1 PSI
22436
1/2" FNPT x 1/2" FNPT Series 815 Brass Check Valve with Viton™ Seals - 1 PSI
$21.30​/Each
Save 5%10+$20.23/Each
Save 10%20+$19.17/Each
Save 15%60+$18.10/Each
Internet Only
$21.30​/Each
In Stock
1/2" FNPT  x 1/2" FNPT Series 815 Brass Check Valve with Viton™ Seals - 1/3 PSI
22437
1/2" FNPT x 1/2" FNPT Series 815 Brass Check Valve with Viton™ Seals - 1/3 PSI
$21.30​/Each
Save 5%10+$20.23/Each
Save 10%20+$19.17/Each
Save 15%60+$18.10/Each
Internet Only
$21.30​/Each
In Stock