Pneumatic Non Return Valves | 10Mm & 8Mm | RS
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    Pneumatic Non-Return Valves

    Pneumatic non-return valves are one of the simplest types of pneumatic valves available. They allow compressed air to flow in one direction and prevent or block it from flowing in the opposite direction. Also known as a check valve these simple but effective devices help to eliminate any potential damage that may be caused by backflow pressure. RS offer a range of high-quality valves from leading brands including Festo, SMC, Legris, Norgren and of course RS PRO.

    How does a Pneumatic Non-Return Valve Work?

    Non-return valves work automatically, which means that most valves don’t need human intervention external control to work. The valves will have two openings or ports, an inlet and an outlet port. An internal spring will lift when the pressure upstream is great enough to overcome the tension of the spring. This is referred to as the ‘cracking pressure’.

    What is Cracking Pressure?

    Cracking pressure refers to the minimum pressure differential needed between the inlet and outlet of the valve at which the first indication of flow occurs. When cracking pressure is reached, the valve will open to allow flow, when it drops the valve will close.

    What are the different types of Pneumatic Non-return valve?

    Pneumatic non-return valves are available in two main types. Push in tube-to-tube or Push-in tube to threaded.

    Tube-to-Tube Non Return Valves

    This type of non-return valve will have a push-in connection port at either end. They are available with different body materials, including brass and aluminium. Hose sizes ranging from 4 mm to 12 mm

    Tube to Threaded Non Return Valves

    This type of non-return valve will have a tube connection on one end and a threaded connection on the other. They are available with different body materials including brass and aluminium. Hose sizes ranging from 4 mm to 12 mm. Threads are typically BSPP (G), BSPT (R), NPT, and Metric.

    173 Products showing for Pneumatic Non-Return Valves

    RS PRO
    -
    Threaded
    -
    -
    4mm
    -
    -
    -
    Male
    0 kgf/cm², 0kPa
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    1/8in
    RS PRO
    6mm
    Tube
    -
    Tube
    6mm
    CVPU
    -
    -
    -
    0bar
    10 bar
    +60°C
    -
    -
    RS PRO
    3/8in
    Threaded
    3/8 in Female
    Threaded
    -
    66061
    3/8 in Female
    -
    -
    -
    -
    -
    -
    -
    RS PRO
    -
    Threaded
    -
    -
    11mm
    -
    -
    -
    Male
    -
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    3/8in
    RS PRO
    -
    Threaded
    3/8 in Male
    Threaded
    -
    6063
    -
    -
    Male
    2bar
    8 bar
    +80°C
    Female
    3/8in
    RS PRO
    Push In 4mm
    Tube
    -
    Threaded
    -
    57065
    -
    -
    -
    2bar
    8 bar
    +80°C
    Male
    -
    RS PRO
    -
    Threaded
    1/8 in Male
    Threaded
    -
    6063
    -
    -
    Male
    2bar
    8 bar
    +80°C
    Female
    1/8in
    HK$77.32
    Each (In a Pack of 10)
    RS PRO
    -
    -
    -
    -
    -
    -
    -
    -
    Female
    2bar
    8 bar
    +80°C
    Female
    3.175 mm
    RS PRO
    -
    Threaded
    -
    -
    10mm
    -
    -
    -
    Male
    -
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    1/4in
    RS PRO
    Push In 12mm
    Tube
    -
    Threaded
    -
    57065
    -
    -
    -
    2bar
    8 bar
    +80°C
    Male
    -
    RS PRO
    -
    Threaded
    -
    -
    8mm
    -
    -
    -
    Male
    -
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    1/8in
    RS PRO
    -
    Threaded
    -
    -
    10mm
    -
    -
    -
    Male
    0 kPa, 0 kgf/cm²
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    1/4in
    RS PRO
    Push In 6mm
    Tube
    -
    Threaded
    -
    57065
    -
    -
    -
    2bar
    8 bar
    +80°C
    Male
    -
    RS PRO
    Push In 8mm
    -
    -
    -
    Push In 8mm
    -
    -
    -
    -
    2bar
    8 bar
    +80°C
    -
    -
    RS PRO
    4mm
    Tube
    -
    Tube
    4mm
    CVPU
    -
    -
    -
    0bar
    10 bar
    +60°C
    -
    -
    RS PRO
    -
    Threaded
    -
    -
    10mm
    -
    -
    -
    Male
    0 kgf/cm², 0kPa
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    3/8in
    HK$213.73
    Each (In a Pack of 10)
    RS PRO
    -
    -
    -
    -
    -
    -
    -
    -
    Female
    2bar
    8 bar
    +80°C
    Female
    12.7 mm
    RS PRO
    -
    Threaded
    -
    -
    6mm
    -
    -
    -
    Male
    0 kgf/cm², 0kPa
    9.9 kgf/cm², 990 kPa
    +60°C
    -
    1/4in
    RS PRO
    10mm
    Tube
    -
    Tube
    10mm
    CVPU
    -
    -
    -
    0bar
    10 bar
    +60°C
    -
    -
    RS PRO
    1/8in
    Threaded
    1/8 in Female
    Threaded
    -
    66061
    1/8 in Female
    -
    -
    -
    -
    -
    -
    -
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