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 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 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.

• 1/16”, 1/8” Hose Barb and 10-32 Female threads available
• Body materials include Polypropylene and Polysulfone
• Miniature size Plastic Diaphragm Check Valves with low cracking pressures

• 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 diaphragm
• Body materials include Nylon, Polycarbonate, Kynar and Polypropylene
• All parting lines on the critical sealing surfaces have been eliminated
• After molding, check valves are assembled using a non-toxic technique without the use of foreign materials

Performance Characteristics

• Crack: 1/2 psi
• Seal: 1.9 psi
• Max Pressure: 50 psi

• 1/8” to 3/8” Hose Barb
• Acrylic body with a silicone seal

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