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Check Valve 426 Series PVC Gray 1/4 FPT x 1/4 MPT BUNA

Part Number: 5721290
Alt. Part Number: PVC 426-4F4M-B
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The 426 Series Check Valve prevents reverse flow and cross contamination and its design promotes multiple configurations to fit the exact end use application. Gray PVC with 1 psi stainless spring and ball is the standard configuration. PVC is a NSF Standard 61 Approved Material. Nylon, PVDF (Kynar®) and Glass Filled Polypropylene are available for chemical resistance applications. MakroBlend is an NSF Standard 51 Approved Material. Hastelloy is a superior chemically resistant spring material. Teflon® balls are standard with Hastelloy springs for chemical resistance applications.

Options are available by special order with a minimum order of 100 units. Please call to place a special order with varying options.

  • Material Options: Gray PVC (Standard), White PVC, White Polypropylene, Black Nylon,White Nylon, MakroBlend, Black PVDF (Kynar®)
  • Seal Options: Buna-N (Standard), Ethylene Propylene, Fluoroelastomer (Viton®)
  • End Options: 1/8, 1/4 Male and Female NPT1/8, 1/4, 5/16, 3/8, 1/2 Hose Barb1/8, 1/4 JACO1/4, 3/8 SMC Push-To-Connect3/8 BIB (Smooth Barb)
  • Cracking Pressure:1 psi (Standard), 1/3, 1.5, 3, 5, 7, 10, 12 psi or No Spring, Hastelloy Spring - 1/3, 1, 5, 12 psi
  • Ball Material 316 Stainless Ball with 302 Stainless Spring (Standard), Teflon® Ball with Hastelloy Spring
  • Max Pressure: 125 psi
    Max Temperature 140° F

California residents Prop 65 Warning
This product contains materials known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov