1) Spray engine tuned for low flow

Look for real performance claims at your target gpm. A good spray plate can feel full at 1.8 to 2.0 gpm if coverage and droplet sizing are engineered.

2) Pressure behavior in real buildings

Multi story and mixed occupancy buildings see pressure swings. Choose heads and controls that avoid harsh jets at high psi and weak rinse at low psi.

3) Quiet, stable, and easy to service

High end feel fades when a head whistles, scales up, or clogs. Favor easy clean nozzles, accessible screens, and replaceable flow components.

A) Set the code and owner constraints first

Define the max flow, jurisdiction requirements, and any WaterSense or local efficiency targets.

B) Define “premium feel” as measurable goals

Coverage, spray intensity, rinse off time, noise tolerance, and expected pressure range at the outlet.

C) Coordinate valve strategy and water quality risk

Thermostatic vs pressure balance. Include debris screens, line flushing, and scale plan in O and M.

Performance

• Max flow: ____ gpm at 80 psi (verify jurisdiction)
• Operating pressure range documented: ____ to ____ psi
• Spray type: rain, focused rinse, or mixed
• Coverage: uniform distribution, no harsh needle jets

Durability and Maintenance

• Body material: brass or stainless preferred
• Nozzles: easy clean anti scale
• Service parts: screens, restrictors, seals available
• Commissioning: flush lines before final trim