• Barbed check valves feature 3/32" and 1/8" hose barbs available in equal, reducing, and barb-to-male or female luer configurations
• These check valves feature DEHP- and latex-free silicone diaphragms and are offered in MABS and SAN housings
• All materials satisfy USP Class VI and ISO 10993 criteria

These low-pressure single barb hose barbed plastic diaphragm check valves provide backflow protection for fluid, air, gas, and vacuum flows in a very broad range of applications.

Choose between nylon, polypropylene, or PVDF (Kynar®) body materials. EPDM, epichlorohydrine (ECO), fluorosilicone (FVMQ), or Viton™ (FKM or FPM) diaphragm material options. 3/16", 1/4", 5/16", or 3/8" flexible tubing inner diameter (ID) connections.

• Highly reliable performance
• Can be installed in any position for maximum flexibility
• Free-floating diaphragms respond to the slightest pressure change
• Very rapid response times between free-flow and no-flow conditions
• Designed to perform at high (automotive) industry standards but very economical

These low-pressure straight shaft or port (non-barbed) plastic diaphragm check valves provide backflow protection for fluid, air, gas, and vacuum flows in a very broad range of applications.

Choose between nylon, polypropylene, or PVDF (Kynar®) body materials. EPDM, fluorosilicone (FVMQ), silicone, or Viton™ (FKM or FPM) diaphragm material options. 1/8” flexible tubing inner diameter (ID) connections.

• Highly reliable performance
• Can be installed in any position for maximum flexibility
• Free-floating diaphragms respond to the slightest pressure change
• Very rapid response times between free-flow and no-flow conditions
• Designed to perform at high (automotive) industry standards but very economical

These low-pressure triple barb hose barbed plastic diaphragm check valves provide backflow protection for fluid, air, gas, and vacuum flows in a very broad range of applications.

Choose between nylon or PVDF (Kynar®) body materials. Epichlorohydrin (ECO) or Viton™ (FKM or FPM) diaphragm material options. 3/8" flexible tubing inner diameter (ID) connections.

• Highly reliable performance
• Can be installed in any position for maximum flexibility
• Free-floating diaphragms respond to the slightest pressure change
• Very rapid response times between free-flow and no-flow conditions
• Designed to perform at high (automotive) industry standards but very economical

• Intravascular Applications
• ISO 80369-7 Compliant ( learn what this standard means )
• Male Luer or Female Luer x Hose Barb
• 0.11 psi Cracking Pressure
• Polysulfone Insert with Silicone Disk
• ABS Body

• Barbed Check Valves with 1/32", 1/16", or 1/8" Hose Barbs
• These check valves feature a ≤0.25 psi Cracking Pressure
• All materials satisfy USP Class VI, ISO 10993-1, and FDA 21 CFR 181.32 criteria

• Inlet: 1/8" to 3/8" Hose Barb, 1/8" Male NPT
• Outlet: 1/8" to 3/8" Hose Barb
• Available with Silicone, Viton™, and Neoprene diaphragms
• Body materials include Nylon, Polycarbonate, Kynar®, and Polypropylene
• All parting lines on critical sealing surfaces have been eliminated
• After molding, check valves are assembled using a non-toxic technique without foreign materials

Performance Characteristics

• Crack Pressure: 0.5 psi
• Seal Pressure: 1.9 psi
• Maximum Pressure: 50 psi

• Male Luer Lock, Male Slip Luer, and Female Luer Thread connections
• Polycarbonate body with a silicone seal

Our Luer check valves offer a variety of inlet and outlet configurations to suit your fluid control needs. Choose from male Luer lock, female Luer lock, female Luer thread, male slip Luer, and 3mm ID tube inserts for easy integration into medical and lab systems. These valves are compact and lightweight, featuring a latex-free silicone diaphragm and body materials such as MABS, acrylic, or polycarbonate.

With cracking pressures as low as 0.11 psi, these valves are ideal for low-pressure, medical-grade applications including IV lines, sampling systems, and diagnostic devices. Whether you're connecting to a threaded Luer port or pushing into flexible tubing, we offer precision-fit options.

Miniature check valves prevent flow in one direction while allowing flow in the opposite direction. Also known as non-return valves, these check valves use a floating disk that shifts position based on media flow. In the forward direction, media flows around the disk. In the reverse direction, the disk is pushed against the seat, preventing flow.