






🔧 Secure your flow, protect your home—pressure relief perfected.
The Merrill MFG PRVNL50 is a 1/2-inch lead-free brass pressure relief valve designed for cold water systems, featuring durable stainless steel springs and certified to IAMPO and NSF/ANSI 372 standards. With a maximum operating pressure of 75 PSI and standard NPT connections, it offers reliable, code-compliant protection against excessive pressure, ensuring safety and longevity in your plumbing setup.






| Material | Brass |
| Brand | Merrill |
| Exterior Finish | Brass |
| Inlet Connection Size | 0.5 Inches |
| Inlet Connection Type | National Pipe Tapered |
| Outlet Connection Type | MNPT |
| Maximum Operating Pressure | 75 Pound per Square Inch |
| Number of Ports | 1 |
| Outlet Connection Size | 0.5 Inches |
| Specification Met | IAMPO, NSF/ANSI 372, AB 1953 |
| Manufacturer | Merrill Manufacturing Company |
| UPC | 642367450519 |
| Part Number | PRVNL50-A |
| Item Weight | 5.6 ounces |
| Package Dimensions | 8.07 x 2.52 x 1.14 inches |
| Item model number | PRVNL50-A |
| Size | 1/2 inch |
| Batteries Included? | No |
| Batteries Required? | No |
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