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 Components 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.


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รายละเอียดสินค้า / Description ราคา / Price Manufacturer Series Inlet Connection Type Threaded Inlet Connection Tube Inlet Connection Outlet Connection Type Threaded Outlet Connection Tube Outlet Connection Cracking Pressure Threaded Inlet Gender Minimum Operating Pressure Maximum Operating Pressure Maximum Operating Temperature Threaded Outlet Gender Threaded Inlet Thread Size
RS Stock No. 367-0624
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AKH06-00
Brand :SMC
THB371.42
Each
Units
AKH Tube - 6mm Tube - 6mm 0.005MPa - -100kPa 1 MPa +60°C - -
RS Stock No. 703-6286
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0821200195
THB724.84
Each
Units
CC02 Tube - 8mm Threaded G 1/8 Male - - - 0.5bar 10 bar +70°C Male -
RS Stock No. 762-1398
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AC-VP
Brand :Metcal
THB563.77
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 703-6251
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0821200005
THB1,511.49
Each
Units
CC01 Threaded G 1/4 Female - Threaded G 1/4 Female - - Female 0.5bar 10 bar +80°C Female 1/4 in
RS Stock No. 445-3105
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7995 06 13
Brand :Legris
THB513.49
Each
Units
7995 Threaded R 1/4 Male - Tube - 6mm - Male 1bar 10 bar +70°C - 1/4 in
RS Stock No. 826-8140
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AKH11A-N04S
Brand :SMC
THB1,092.74
Each
Units
AKH Tube - 3/8in Threaded NPT 1/2 Male - 0.005MPa - -100kPa 1 MPa, 1.5 MPa +60°C Male -
RS Stock No. 849-7238
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AKB01B-N01S
Brand :SMC
THB453.26
Each
Units
AKB Threaded NPT 1/8 Male - Threaded NPT 1/8 Female - 0.005MPa Female -100kPa 1 MPa +60°C Female 1/8
RS Stock No. 367-0618
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AKH04-00
Brand :SMC
THB317.83
Each
Units
AKH Tube - 4mm Tube - 4mm 0.005MPa - -100kPa 1 MPa +60°C - -
RS Stock No. 445-3133
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.7985 06 13
Brand :Legris
THB513.49
Each
Units
7985 Tube - 6mm Threaded R 1/4 Male - - - 1bar 10 bar +70°C Male -
RS Stock No. 367-0630
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.AKH08-00
Brand :SMC
THB546.36
Each
Units
AKH Tube - 8mm Tube - 8mm 0.005MPa - -100kPa 1 MPa +60°C - -
RS Stock No. 703-6255
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.0821200008
THB1,276.08
Each
Units
CC01 Threaded G 1/8 Female - Threaded G 1/8 Female - - Female 0.5bar 10 bar +80°C Female 1/8 in
RS Stock No. 203-8504
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HB-1/2-QS-12
Brand :Festo
THB2,196.25
Each
Units
HB-1/2-QS-12 Threaded - 12mm Threaded - R1/2 - - - - - - -
RS Stock No. 202-3560
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HGL-1/4-QS-10
Brand :Festo
THB1,994.12
Each
Units
HGL Tube - 10mm Threaded - - - - - - - - -
RS Stock No. 202-3548
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.HAB-1/4
Brand :Festo
THB769.38
Each
Units
B Threaded - - Threaded - - - - - - - - -
RS Stock No. 176-2267
Brand :RS PRO
THB364.449
Each: (In a Pack of 10)
Units
- - - - - - - - Female 2bar 8 bar +80°C Female 6.35 mm
RS Stock No. 290-3692
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.T50P0010
Brand :IMI Norgren
THB1,322.58
Each
Units
T50P Tube - 10mm Tube - 10mm 0.03bar - -0.9bar 16 bar +80°C - -
RS Stock No. 144-2705
Brand :RS PRO
THB260.85
1 Bag of 1
Bag(s)
- - - - - - - - - - 9.9 kgf/cm², 990 kPa +60°C - -
RS Stock No. 187-9027
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.R412010570
THB510.35
Each
Units
CC04 - - 8mm Threaded - - 0.5bar - 0.5bar 10 bar +60°C - -
RS Stock No. 204-0036
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ISV-M4
Brand :Festo
THB714.38
Each
Units
ISV Threaded - 4mm Threaded - 4mm - - - - - - -
RS Stock No. 144-2704
Brand :RS PRO
THB190.95
1 Bag of 1
Bag(s)
- - - - - - - - - - 9.9 kgf/cm², 990 kPa +60°C - -