Valve Manifold vs. Distributed Valves: Design Trade-offs

Central Manifold or Distributed Valves for Residential Systems

Should all valves be in one manifold bank or spread through the yard?

Recommendation: Central Manifold for < 1 Acre

Advantages of manifold:

• Lower installation cost (less mainline pipe, less control wire)
• Easier maintenance (all valves in one access point)
• Simpler winterization (single drain point)
• Cleaner appearance (one valve box vs. multiple)

Distributed valves justified when:

• Hydraulic requirements demand it (pressure loss on long mainline runs)
• Property layout makes manifold impractical (extreme distances, obstacles)
• Future expansion planned in specific areas

Design Rule

For typical residential lots (< 1 acre), manifold is preferred. Use 1-inch or 1.25-inch mainline from point of connection to manifold, then lateral lines to zones.