Check Valves

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High Flow Check Valve - 91006
91006

High Flow Check Valve

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91006 is a high flow valve that provides low flow resistance, a low 0.035 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valves fits 1/4 inch OD tubing. Check Valve sample kits are also available which are ideal for testing.
0.035 psi CP, Fits 1/4 inch OD Tubing; 0.24 inch - 0.255 inch ID (...
Acrylic, Silicone
High Flow Check Valve - 91007
91007

High Flow Check Valve

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91007 is a high flow valve that provides low flow resistance, a low 0.061 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valves fits 1/8 inch OD tubing. Check Valve sample kits are also available which are ideal for testing.
0.061 psi CP, Fits 1/8 inch OD Tubing; 0.115 inch - 0.13 inch ID (...
Acrylic, Silicone
High Flow Check Valve - 91008
91008

High Flow Check Valve

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91008 is a high flow valve that provides low flow resistance, a low 0.040 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valves fits 3/32 inch OD tubing. Check Valve sample kits are also available which are ideal for testing.
0.040 psi CP, Fits 3/32 inch OD Tubing; 0.1 inch - 0.08 inch ID (0...
Acrylic, Silicone
High Flow Check Valve, Adjustable Pressure - 11083
11083

High Flow Check Valve, Adjustable Pressure

Qosina offers an extensive line of check valves, available in a variety of styles that are in stock and ready for immediate delivery. Made of acrylic and silicone, this high flow valve has a cracking pressure that can be adjusted to open between 0 and 2 psi. Qosina part # 11083 accommodates 0.375 inch ID tubing and allows for low flow resistance, low opening pressure, and positive seal against backflow. Qosina offers a variety of flow rates, materials, cracking pressure and back pressure options. Check Valve sample kits are also available which are ideal for testing.
Fits 0.375 inch ID Tubing (3/8 inch, 9.5 mm) , 0 psi - 2 psi CP
Acrylic, Silicone
High Flow Check Valve, Barbed - 91014
91014

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91014 is a high flow valve that provides low flow resistance, a low 0.052 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding. The inlet fits 3/16 inch ID tubing and the outlet fits 1/4 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.
0.052 psi CP, Fits 3/16 inch ID Tubing Inlet x 1/4 inch ID Tubing...
Acrylic, Silicone
High Flow Check Valve, Barbed - 91027
91027

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91027 is a high flow valve that provides low flow resistance, a low 0.059 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding and fits 1/8 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.
0.059 psi CP, Fits 1/8 inch ID Tubing (0.125 inch; 3.2 mm)
Acrylic, Silicone
High Flow Check Valve, Barbed - 91028
91028

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91028 is a high flow valve that provides low flow resistance, a low 0.052 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding and fits 3/16 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.
0.052 psi CP, Fits 3/16 inch ID Tubing (0.187 inch; 4.8 mm)
Acrylic, Silicone
High Flow Check Valve, Barbed - 91029
91029

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91029 is a high flow valve that provides low flow resistance, a low 0.075 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding and fits 1/4 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.
0.075 psi CP, Fits 1/4 inch ID Tubing (0.25 inch; 6.4 mm)
Acrylic, Silicone
High Flow Check Valve, Barbed - 91030
91030

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91030 is a high flow valve that provides low flow resistance, a low 0.062 psi opening pressure, and a positive seal against backflow. Made of acrylic and silicone, this valve is barbed, eliminating the need for bonding and fits 3/8 inch ID tubing. Check Valve sample kits are also available which are ideal for testing.
0.062 psi CP, Fits 3/8 inch ID Tubing (0.375 inch; 9.5 mm)
Acrylic, Silicone
High Flow Check Valve, Blue Inlet, Clear Outlet - 91045
91045

High Flow Check Valve, Blue Inlet, Clear Outlet

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91045 features a low cracking pressure, MABS housing and silicone valve. With a blue inlet and clear outlet, this check valve features a 0.256 inch ID and 0.366 OD on both tubing ports, and is BPA and latex free, as well as Reach and RoHS compliant. Check Valve sample kits are also available which are ideal for testing.
Both Ports 0.256 inch ID / 0.366 inch OD (6.5 mm / 9.3 mm); <1 psi...
MABS, Silicone
High Flow Check Valve, Barbed - 91050
91050

High Flow Check Valve, Barbed

Qosina offers an extensive line of Check Valves available in a variety of styles that are in stock and ready for immediate delivery. Qosina part # 91050 features a low, 0.075 psi cracking pressure, clear acrylic housing and silicone valve. Accommodating ¼ inch ID tubes, this valve is BPA free, Latex free, Reach & RoHS compliant, conflict mineral free, and Class VI approved. Check Valve sample kits are also available which are ideal for testing.
Fits 1/4 inch ID Tubing (0.25 inch, 6.4 mm); 0.075 psi CP
Acrylic, Silicone

Medical Check Valves

Qosina offers an extensive line of medical check valves, available in an assortment of designs, in stock and ready for immediate delivery. Complete your project by choosing among our one-way duckbills, high-flow and in-line, luer-activated and dual check valves.

High-flow valves feature low flow resistance, low opening pressure and a positive seal against backflow. Designed for flushing and irrigating applications, high-flow check valves afford quick flow response for more control.

DEHP-free, acrylic in-line check valves are designed to prevent backflow and have latex-free silicone diaphragms that permit flow in one direction, thereby preventing retrograde flow (back pressure tested to their specific psi ratings). In-line check valves feature versatility in design and low cracking pressures (i.e., the pressure at which the valve will start to open). Our assortment encompasses a range of cracking pressure ratings. If back pressure is a concern, choose from our variety of duckbill check valves to help avoid backflow contamination.

Luer-activated check valves are equipped with a needle-free design featuring a closed silicone plug that blocks flow until mechanically opened with a male luer connector. Female luer lock-equipped needleless valves mate tightly with all standard luer syringes and connectors. Besides offering a high flow rate, they allow bidirectional flow for precision-controlled aspiration or injection of fluids.

Our wide selection of nearly 70 types of luer-activated valves and accessories reflects the expanding range of protocol systems utilizing this technology. With the tremendous impact of needleless systems on the safety of both patients and health professionals, they are regarded as an engineered control for prevention of infection from contaminated sharps.

Dual check valves enable injection and aspiration from separate ports of a single connector. Depending on their design, they are ideal for either the mixing of two substances, or for the mixing and continuous filling of two substances

Sourcing from a range of check valve manufacturers allows Qosina to offer numerous configuration, flow rate, material, cracking pressure and back pressure options to fit a wide range of applications. Single-use medical device check valve sample kits are also available for purchase and are ideal for testing our components with your design prior to purchase.

For more information, including the potential for custom sourcing if you are unable to locate the component you need, please contact us.