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⚡ Keep your compressor running smooth — no leaks, no limits!
The Hromee Air Compressor Check Valve Kit features a robust 1/2 inch MNPT brass construction with stainless steel springs and fluoropolymer poppets, delivering reliable backflow prevention at up to 450 PSI and 20 SCFM airflow. Designed for easy maintenance and compatibility with multiple unloader fittings, this 4-piece kit ensures optimal compressor efficiency and longevity.





















| ASIN | B07MHGPT63 |
| Best Sellers Rank | #67,179 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #166 in Air-Compressor Accessories |
| Brand Name | Hromee |
| Connector Type | Barb, Push to Fit |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,117) |
| Exterior Finish | Brass, Stainless Steel |
| Item Dimensions | 4 x 4.6 x 1 inches |
| Item Weight | 4.64 ounces |
| Manufacturer | Hromee |
| Manufacturer Part Number | HR4011 |
| Material Type | Brass |
| Maximum Pressure | 450 psi |
| Model Number | HR4011 |
| Number of Items | 4 |
| Number of Packs | 1 |
| Number of Pieces | 4 |
| Number of Ports | 2 |
| Outlet Connection Type | MNPT |
| Set Name | Kit |
| Size | 1/2 inch |
| Thread Size | 1/2 inch |
| Thread Type | NPT |
| Unit Count | 1 Count |
| Valve Type | Check Valve |
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