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🔧 Elevate your flow game with precision and durability!
This 1/4 inch one-way air check valve features a robust stainless steel construction with BSPP female threading, designed for reliable, leak-proof connections in air, water, oil, and gas pipelines. Its compact hexagonal form factor ensures easy installation and maintenance, making it an essential component for professional-grade fluid control systems.





















| ASIN | B08CNG27SN |
| Best Sellers Rank | #216,620 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #501 in Check Valves |
| Brand | Marhynchus |
| Brand Name | Marhynchus |
| Connector Type | Slip |
| Customer Reviews | 4.0 out of 5 stars 84 Reviews |
| Exterior Finish | Stainless Steel |
| Included Components | inc |
| Inlet Connection Type | Threaded |
| Item Dimensions | 1.97 x 0.79 x 0.79 inches |
| Item Weight | 60 Grams |
| Item dimensions L x W x H | 1.97 x 0.79 x 0.79 inches |
| Manufacturer | Marhynchus |
| Manufacturer Part Number | Marhynchusx9g8bq3tn5-02 |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | Marhynchusx9g8bq3tn5-02 |
| Number of Ports | 2 |
| Outlet Connection Type | BSPP |
| Size | 1/4” |
| Thread Size | 1/4 inch |
| Thread Type | Female |
| Unit Count | 1 Count |
| Valve Type | air check valve,valve |
M**A
Compact and good fitt
The size fits perfect,don't know if it will pop off yet,haven't aired it up yet
J**N
Simple, but exactly the solution I needed.
It does exactly what it's supposed to do.
M**B
Is well built, but required excess thead tape
Appears well built, however it required 6 wraps of premium thread tape on each set of threads to seal. Threads are cut a hair to wide. the problem is its British Standard not National Standard pipe thread.
D**K
Leaks
Leaks
N**S
Material concerns
The internal poppet and spring are not stainless. They corroded and the valve failed quickly.
T**G
Threads are inconsistent
I bought 8 pieces and 6 pieces had threads on one side which would hardly accept standard 1/4 inch male couplers
A**N
Threads not to American standard 1/2” size pipe
Sloppy sizing & threading, fittings installed won’t tighten and therefore LEAK !
K**T
Would not recommend
I put it on an on board air compressor in a vehicle and within 30 seconds the internals fell apart
R**B
Buen producto
Buen producto es lo publicado
R**K
Well made and fast delivery
My handyman chose and installed it with no issues. Seems a well made item.
J**R
Ce clapet a régler mon problème de contamination de produit de lavage
Installé dans une laveuse de réservoir à lait pour éliminer tout risque que l'acide de lavage entre en contact avec le détersif alcalin, ce qui crée une réaction chimique dégageant de la chaleur et des gaz nocifs.
A**S
Exe
Excelente
F**Z
Buen producto
Buen precio y calidad
Trustpilot
3 weeks ago
2 weeks ago