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Check valves control the flow direction of fluids and are available in various configurations. Single-configuration check valves are designed to prevent back flow in only one direction. Double-configuration check valves control flow bi-directionally by diverting fluid to multiple outlets consecutively. Single-configuration check valves are normally closed, requiring positive pressure differential to allow flow, and are available with various termination options including luers, bond sockets, bond posts, and barbed designs. There are several opening pressure ratings from precision near zero to the anti-siphon valves which have higher opening pressures to prevent gravity induced flow. Medical-grade check valves are made with USP Class VI materials deemed safe for use with the human body. Medical-grade check valves reduce the risk of contamination, allow seamless priming, and offer higher flow rates. They are ideal for medical device designers focused on infusion, drainage and irrigation applications.

FEATURES & BENEFITS

  • Designed to prevent back flow

  • Materials meet USP Class VI & ISO 10993 criteria

  • Air entrapment readily alleviated during priming

  • Operate in any spatial orientation

  • Low cracking pressures

  • Barbed check valves with 3/32” (2.4 mm) & 1/8” (3.2 mm) single barb ends

  • Bi-directional check valves for clean fluid transfer from supply to site

  • Custom configurations
     

​SPECIFICATIONS

Materials:

  • Housing: MABS, SAN, & Polycarbonate

  • Diaphragm: Silicone

Sterilization:

  • Gamma radiation stable & EtO compatible

Single-Configuration Check Valves:

  • Anti-Siphon Check Valves

  • High-Flow Check Valves

  • One-Way Check Valves

  • Barbed Check Valves

Double-Configuration Check Valves:

  • Double-Configuration Check Valves

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Anti-Siphon Check Valves

Cracking Pressure:

1.450 psig - 4.351 psig (100 mb - 300 mb)
Max. Back Pressure:

73.000 psig - 304.500 psig (5 bar - 21 bar)
Flow Rate:

110 ml/min - 200 ml/min

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Cracking Pressure:

≤ .174 psig (12 mb)
Max. Back Pressure:

73.000 psig - 116.030 psig (5 bar - 8 bar)
Flow Rate:

90 ml/min - 150 ml/min

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Double Check Valves

Cracking Pressure:

2 psi - 5 psi (0.14 bar - 0.34 bar)

Available Inlet Ports

Female luer aspiration port
Male luer discharge port

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Cracking Pressure:

≤ .290 psig (20 mb)

Max. Back Pressure:

14.500 psig (1 bar)

Flow Rate:
With water at a pressure of 100 mb; ≥ 1000 ml/min
With water at a pressure of 1 bar; ≥ 3000 ml/min

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Cracking Pressure:

≤ .087 psig (6 mb)
Max. Back Pressure:

73.000 psig (5 bar)
Flow Rate:

≥ 150 ml/min

Additional configurations​ please contact Norda

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