The DS05-101-PEX-LF is a lead-free pressure reducing valve from Resideo (Honeywell Home), 3/4 inch, PEX 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.
The PEX connection lands directly on PEX tubing without an adapter.
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 #: DS05-101-PEX-LF/U
-
Type: Pressure reducing valve
-
Size: 3/4 in
-
Connection: PEX
-
Lead free: Yes
-
UPC: 194159007451
-
Category: Pressure Reducing Valves
Full Specifications
| Ambient Operating Temperature (Min) |
33°F, 1 °C |
| Ambient Operating Temperature (Max) |
140°F, 60 °C |
| Approvals and Standards |
Lead Free Plumbing Code Compliance: The wettable surfaces contain less than 0.08% of lead by weighted average, ASSE 1003-2020 Listed, CSA B356 Listed, IAPMO Listed, NSF/ANSI 61 Compliant, NSF/ANSI 372 Compliant |
| Color |
Bronze, Black |
| Connection Size |
3/4 in |
| Connection Type |
PEX Connection |
| Differential Pressure (Min) |
14.5 psi, 100 kPa |
| Inlet Pressure (Max) |
250 psi, 1724 kPa |
| Lead Free |
Yes |
| Media Temperature (Min) |
33°F, 1 °C |
| Media Temperature (Max) |
140°F, 60 °C |
| Number of Connections |
2 |
| Pressure Reducing Ratio |
10:1 Maximum |
| Product Height |
4.2 in, 107 mm |
| Product Length |
6.2 in, 157 mm |
| Product Weight |
1.6 lb, 730 g |
| Product Width |
2 in, 50 mm |
| Valve Body Material |
Lead-free ECO BRASS® |
| Valve Body Pattern |
Straight Through |
| Application |
Indoor Potable Water, Outdoor Potable Water, Indoor Irrigation, Outdoor Irrigation |
| Valve Type |
Pressure Regulating Valve |
| DN Size |
DN20 |
| Controlled Media |
Water |
| Product Features |
Screw Adjustment (1 turn) ± 7 psi (48.3 kPa) |
| Valve Diaphragm Material |
Fabric-reinforced diaphragm |
| Outside Use |
Yes |
| Number of Gauge Taps |
None |
Documents & Downloads