🛠️ Lock in flow, lock out risk — the valve that means business
This 4" NPT brass swing check valve offers reliable one-way flow control with a maximum operating pressure of 1.6 MPa. Its explosion-proof, wear-resistant brass body features a polished interior to prevent scaling and clogging, ensuring long service life. Designed for diverse applications including water, oil, gas, and non-corrosive media, it operates efficiently across a wide temperature range (-20°C to 150°C), making it ideal for demanding industrial environments.
| Material | Brass |
| Brand | SYWUWV |
| Item dimensions L x W x H | 0.08 x 0.1 x 0.1 inches |
| Exterior Finish | Brass |
| Inlet Connection Size | 4 Inches |
| Inlet Connection Type | NPT thread |
| Outlet Connection Type | NPT thread |
| Maximum Operating Pressure | 1.6E+3 Kilopascal |
| Number of Ports | 1 |
| Outlet Connection Size | 4 Inches |
| Valve Type | Swing Check Valve |
| Manufacturer | SYWUWV |
| Part Number | 4 |
| Item Weight | 11.16 pounds |
| Product Dimensions | 0.08 x 0.1 x 0.1 inches |
| Country of Origin | China |
| Item model number | 4" One Way Check Valve |
| Size | 4 Inch |
| Color | Yellow |
| Included Components | 4" One Way Check Valve |
| Batteries Included? | No |
| Batteries Required? | No |
S**E
Unable to purchase at the box stores anymore
I needed this to repair an issue with my rural well. The old valve was leaking and a replacement was not available at the Blue or Orange stores locally.The casting/machining and threads are very clean. The valve works properly and I have no concerns about it's longevity... Great price too!
G**2
As advertised, no issues, no leaks.
Used to isolate my water pressure booster, seems solid, no leaks.
M**N
🧙♂️ good value
works good
S**S
Works great for my Well Just what i needed.
Works great for my Well Just what i needed.
P**L
Worthless as a check valve
If I could leave zero stars I would. A check valve that doesn’t seal or prevent back flow at all. My irrigation pump loses prime immediately once it’s shut off causing the pump to lose prime in less than a minute. Completely useless hunk of brass. I should have known better, it has no seal between the valve mating surfaces, just brass on brass.
T**L
Quality machining.
Solid construction, well-machined, priced right. Works as described/expected. My application is in a low pressure hydronic loop to prevent backflow.
C**E
Solid product
Got it installed and working as it should. Great value for price.
D**.
Good for Ram Pump
If you have decent flow to ram pump (4gpm), and 3ft of head, this is a great check valve for you. It is well built with smooth insides to help prevent mineral accumulation. Threads are true NPT. And the price is very good (less than 15 dollars for 1 inch brass check valve.)If you have low input flow, this valve might be too heavy for your ram pump.
Trustpilot
3 weeks ago
2 days ago
