Collection:Check Valves
Check valves (also called non-return valve, one-way valve) are used to allow the flow of fluid in only one direction. They prevent the flow of fluid in the other direction. Check valves work au...
Connection sizei
1/8 inch37
1/4 inch76
3/8 inch77
1/2 inch84
3/4 inch57
1 inch61
1 1/4 inch51
1 1/2 inch50
2 inch36
2 1/2 inch20
3 inch16
4 inch14
DN 50 Flange4
DN 65 Flange4
DN 80 Flange2
DN 100 Flange2
6 mm1
8 mm2
10 mm2
20 mm2
25 mm2
32 mm2
40 mm2
50 mm2
63 mm2
75 mm2
90 mm2
110 mm2
M56
M12x1.51
M14 x 1.51
M16 x 1.51
M18 x 1.53
M22 x 1.51
14 mm1
Push-in connectioni
4 mm15
6 mm20
8 mm22
10 mm19
12 mm19
Union nut threadi
M12 x 1.510
M14 x 1.521
M16 x 1.525
M18 x 1.523
M20 x 1.512
M22 x 1.522
M24 x 1.510
M26 x 1.512
M30 x 220
M42 x 26
M45 x 26
M36x215
M52 x 212
Load class (DIN 2353)
L (light)104
S (heavy)90
Connection type
Compression ring45
Flange12
Glued sleeve18
Hose pillar3
Inner thread conical (NPT)8
Inner thread cylindrical BSPP-G287
Inner thread cylindrical BSPT-Rp79
Inner thread metric1
Outer thread conical BSPT-R50
Outer thread cylindrical BSPP-G169
Outer thread metric12
Push-in95
Cutting ring149
Victaulic connections4
Materiali
Brass103
Polypropylene (PP)6
Stainless steel305
Steel116
Plastic43
Brass, nickel-plated29
Red brass9
Seal materiali
EPDM54
NBR (nitrile rubber)277
FKM (FPM)281
Teflon (PTFE)35
Fluorinated ethylene propylene (FEP)4
Metal52
tf000271
TV001049138
TV001050138
TV00105130
TV001052102
TV001053132
TV001054180
TV00105554
EV021474159
EV022289138
EV008337188
TV000354140
EV023095188
EV004870250
TV00043339
TV00371654
Max pressure at 20 °C [bar]i
ec011469-ef020077
-2572
-20414
-1064
077
Max temperature [°C]i
Filter size [µm]
121
1.88
Approvali
Drinking water49
NSF ANSI 6138
WRAS24
ec011469-ef022466
Check valve feature
Reinforced pin12
Backflow preventer type EA6
Heavy duty5
Air feeder connection4
High pressure11
Flow to the thread84
Flow from the thread76
Vacuum39
Auto shut-off56
Min pressure difference [bar]i
Kv value [m3/h]i
Material qualityi
Stainless steel 304 (1.4301)67
Stainless steel 316 (1.4401)82
PVC-U38
Stainless steel 316 (1.4408)8
Polyamide (PA)5
Valve bore [mm]i
Valve shapei
Swing type23
Inline spring closed375
Angle seat spring closed44
Ships in
0-2 working days552
6-15 working days1
>15 working days116
Brand
Tameson562
Mondeo142
AZ Pneumatics2
Price
706 results
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 931205 £6.04 In stock | EV003502 | EV020235 | Brass | NBR (nitrile rubber) | 25 | -20 | 100 | 0.04 | 8.7 | 20 | Inline spring closed | |||||||||||
 900102 £13.45 In stock | EV006239 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | 0.03 | 2.5 | Stainless steel 304 (1.4301) | 8 | Inline spring closed | ||||||||||
 900017 £18.15 In stock | EV003503 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | 0.03 | 18.7 | Stainless steel 304 (1.4301) | 25 | Inline spring closed | ||||||||||
 900412 £22.14 In stock | EV003503 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | TV000734, TV000240 | 0.03 | 18.7 | Stainless steel 316 (1.4401) | 25 | Inline spring closed | |||||||||
 H2416M04 £18.52 In stock | EV004591 | EV016143 | Stainless steel | Teflon (PTFE) | 63 | -20 | 200 | TV000234 | 0.06 | 3.3 | Stainless steel 316 (1.4401) | 15 | Inline spring closed | |||||||||
 H2416M03 £17.34 In stock | EV003501 | EV016143 | Stainless steel | Teflon (PTFE) | 63 | -20 | 200 | TV000234 | 0.065 | 1.11 | Stainless steel 316 (1.4401) | 10 | Inline spring closed | |||||||||
 H2416M05 £23.64 In stock | EV003502 | EV016143 | Stainless steel | Teflon (PTFE) | 63 | -20 | 200 | TV000234 | 0.055 | 7.1 | Stainless steel 316 (1.4401) | 20 | Inline spring closed | |||||||||
 900118 £15.21 In stock | EV004591 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | TV000734, TV000240 | 0.03 | 6 | Stainless steel 316 (1.4401) | 15 | Inline spring closed | |||||||||
 900104 £19.41 In stock | EV006239 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | TV000734, TV000240 | 0.03 | 2.5 | Stainless steel 316 (1.4401) | 8 | Inline spring closed | |||||||||
 900109-900920 £18.15 In stock | EV003501 | EV020235 | Stainless steel | FKM (FPM) | -20 | 150 | 1 | 0.03 | 65 | Inline spring closed | ||||||||||||
 900109 £13.44 In stock | EV003501 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | 0.03 | 3.2 | Stainless steel 304 (1.4301) | 10 | Inline spring closed | ||||||||||
 931204 £3.97 In stock | EV004591 | EV020235 | Brass | NBR (nitrile rubber) | 25 | -20 | 100 | 0.04 | 4.74 | 15 | Inline spring closed | |||||||||||
 900111-900931 £27.86 In stock | EV003501 | EV020235 | Stainless steel | FKM (FPM) | -20 | 150 | 1 | 0.03 | 40 | Inline spring closed | ||||||||||||
 H2416M02 £17.37 In stock | EV006239 | EV016143 | Stainless steel | Teflon (PTFE) | 63 | -20 | 200 | TV000234 | 0.085 | 0.18 | Stainless steel 316 (1.4401) | 8 | Inline spring closed | |||||||||
 900111 £19.40 In stock | EV003501 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | TV000734, TV000240 | 0.03 | 3.2 | Stainless steel 316 (1.4401) | 10 | Inline spring closed | |||||||||
 900116 £12.43 In stock | EV004591 | EV020235 | Stainless steel | FKM (FPM) | 16 | -20 | 150 | 0.03 | 6 | Stainless steel 304 (1.4301) | 15 | Inline spring closed |
Check Valves
Check valves (also called non-return valve, one-way valve) are used to allow the flow of fluid in only one direction. They prevent the flow of fluid in the other direction. Check valves work automatically and do not need to be operated. Most available types have a small spring to close the valve, the medium pressure in the forward direction opens the valve. Note that there is a minimum pressure required to open the valve (usually called cracking pressure).