There are 42 products
Show 42 products
check valves
Subcategories
There are 42 products
Show 42 products
| Product | Brand | Connection size | Material | Seal | Valve shape | Connection type | Min temperature (°C) | Min. pressure difference (bar) | Max temperature (°C) | Max pressure at 20 °C (bar) | Valve bore (mm) | Kv value (m3/h) | With lock spring | With balance weight | Width (mm) | Height (mm) | Surface protection | Depth (mm) | Article compression class | Model | With strainer basket | Material quality |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
In stock
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AZ Pneumatics | 1/4 inch | Brass | FKM (FPM) | Inline spring closed | Inner thread cylindrical... | 0 | 0.1 | 110 | 10 | 7 | 0.82 | Yes | No | 13 | 34 | Untreated | 15 | PN 10 | Straight | - | - |
In stock
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Tameson | 1/2 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 100 | 12 | - | 4.22 | Yes | No | 34.5 | 47 | Untreated | 34.5 | PN 12 | Straight | - | - |
In stock
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AZ Pneumatics | 1/8 inch | Brass | FKM (FPM) | Inline spring closed | Inner thread cylindrical... | 0 | 0.1 | 110 | 10 | 5.2 | 0.45 | Yes | No | 16 | 39 | Untreated | 18 | PN 10 | Straight | - | - |
In stock
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Tameson | 1 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 100 | 12 | - | 11.67 | Yes | No | 47.5 | 60.5 | Untreated | 47.5 | PN 12 | Straight | - | - |
In stock
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Tameson | 1/2 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 60 | - | - | - | - | - | - | - | - | - | - | - | Yes | - |
In stock
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Tameson | 1/2 inch | Stainless steel | FKM (FPM) | Inline spring closed | Inner thread cylindrical... | -20 | 0.25 | 150 | 16 | - | - | Yes | No | 66 | 32 | Untreated | 32 | PN 16 | Straight | - | Stainless steel 304 (1.4301) |
In stock
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Tameson | 1 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 60 | - | - | - | - | - | - | - | - | - | - | - | Yes | - |
In stock
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Tameson | 3/4 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 100 | 12 | - | 7.92 | Yes | No | 42 | 53 | Untreated | 42 | PN 12 | Straight | - | - |
In stock
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Tameson | 3/4 inch | Stainless steel | FKM (FPM) | Inline spring closed | Inner thread cylindrical... | -20 | 0.35 | 150 | 16 | - | - | Yes | No | 72 | 45 | Untreated | 45 | PN 16 | Straight | - | Stainless steel 304 (1.4301) |
In stock
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Tameson | 3/8 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 100 | 12 | - | 2.11 | Yes | No | 34.5 | 46.5 | Untreated | 34.5 | PN 12 | Straight | - | - |
In stock
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Tameson | 1 inch | Stainless steel | Teflon (PTFE) | Angle seat spring closed | Inner thread cylindrical... | -20 | 0.4 | 200 | 40 | 22.5 | - | Yes | No | 90 | 75 | Untreated | 43 | PN 40 | Straight | - | Stainless steel 316 (1.4408) |
In stock
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Tameson | 1 inch | Stainless steel | FKM (FPM) | Inline spring closed | Inner thread cylindrical... | -20 | 0.35 | 150 | 16 | - | - | Yes | No | 83 | 55 | Untreated | 55 | PN 16 | Straight | - | Stainless steel 304 (1.4301) |
In stock
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Tameson | 1 1/2 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 100 | 10 | - | 29.39 | Yes | No | 70.5 | 74 | Untreated | 70.5 | PN 10 | Straight | - | - |
In stock
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Tameson | 3/4 inch | Stainless steel | Teflon (PTFE) | Angle seat spring closed | Inner thread cylindrical... | -20 | 0.4 | 200 | 40 | 17.4 | - | Yes | No | 75 | 62 | Untreated | 37 | PN 40 | Straight | - | Stainless steel 316 (1.4408) |
In stock
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Tameson | 1 1/2 inch | Brass | NBR (nitrile rubber) | Inline spring closed | Inner thread cylindrical... | -20 | 0.02 | 60 | - | - | - | - | - | - | - | - | - | - | - | Yes | - |
check valves | tameson.co.uk
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).
