| Pipe Size | 1 in. |
| Connection Type | Female NPT Threaded |
| Valve Type | Pressure Regulating Valve |
| Operating Temperature | 140 F Maximum |
| Controlled Fluid | Potable water |
| Materials (Body) | Lead-free ECO BRASS® |
| Dimensions | 3.8x4.2 |
| CSA | Certified (B356-10) |
| Approvals, Others | NSF/ANSI; IAPMO |
| Materials (Regulator) | Fabric Reinforced Diaphragm |
| Materials (Interior parts) | Stainless Steel and Engineered Thermoplastics |
| Outlet Pressure Adjustment Range (psi) | 15-80 psi |
| Max. Inlet Pressure Rating (psi) | 250 psi |
| Calibrated Adjustment Dial | No |
| Reducing Ratio | 10:1 Maximum |
| Union Fittings | Body Only |
| Approvals, ASSE | Certified 1003-2023 |
| Approvals, IAPMO | Listed |
Description
The DS05-102-LF is a lead-free pressure reducing valve from Resideo (Honeywell Home), 1 inch, NPT connection.
A pressure reducing valve sits where the water service enters the building and holds house pressure at a set value regardless of what the street is doing. Municipal mains commonly run well above what residential fixtures are rated for, and street pressure is not constant — it climbs at night when demand drops.
Uncontrolled pressure is what shortens the life of everything downstream. Fill valves, supply lines, washing machine hoses and water heaters all fail earlier on high pressure, and most plumbing codes cap what may be delivered to fixtures. The PRV is the single component that decides whether the rest of the system lives at its rated pressure.
Lead free construction, as required for potable water in the United States.
Size the valve to the service line, not to the fixture count. An oversized PRV hunts at low flow; an undersized one starves the building at peak draw.
- Brand: Resideo (Honeywell Home)
- Manufacturer Part #: DS05-102-LF/U
- Type: Pressure reducing valve
- Size: 1 in
- Connection: NPT
- Lead free: Yes
- UPC: 194159007468
- Category: Pressure Reducing Valves