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The Merrill MFG PRVNL50 is a 1/2" no-lead brass pressure relief valve designed for cold water systems, featuring threaded 1/2" NPT connections, a maximum pressure rating of 75 PSI, and certified compliance with IAMPO and NSF/ANSI 372 standards. Its durable lead-free brass construction and stainless steel springs ensure reliable, long-lasting pressure protection, making it a top-rated choice among industry professionals.











| ASIN | B08GD12QV5 |
| Best Sellers Rank | #32,367 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Relief Valves |
| Brand Name | Merrill |
| Connector Type | Threaded |
| Customer Reviews | 4.6 4.6 out of 5 stars (204) |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | National Pipe Tapered |
| Manufacturer | Merrill Manufacturing Company |
| Manufacturer Part Number | PRVNL50-A |
| Material Type | Brass |
| Maximum Pressure | 75 psi |
| Model Number | PRVNL50-A |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | MNPT |
| Size | 1/2 inch |
| Specification Met | IAMPO, NSF/ANSI 372, AB 1953 |
| Thread Size | 1/2 inches |
| Thread Type | National Pipe Thread |
| UPC | 642367450519 |
| Unit Count | 1 Count |
| Valve Type | Pressure Relief Valve |
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