What is the nozzle pressure for a sprinkler head?

What is the nozzle pressure for a sprinkler head?

• A. 75 psi
• B. 80 psi
• C. 30 psi
• D. 50 psi

Answer: (C)

Sprinkler heads are designed to discharge effectively at relatively low pressures, since the flow is governed by a fixed orifice and the head’s temperature-activated mechanism. In practice, about 30 psi at the head provides reliable discharge and proper coverage without overloading the head or the piping. The higher numbers listed are more typical of handline or adjustable nozzles, not fixed sprinkler heads. So the nozzle pressure at a sprinkler head is commonly around 30 psi.

Sprinkler heads are designed to discharge effectively at relatively low pressures, since the flow is governed by a fixed orifice and the head’s temperature-activated mechanism. In practice, about 30 psi at the head provides reliable discharge and proper coverage without overloading the head or the piping. The higher numbers listed are more typical of handline or adjustable nozzles, not fixed sprinkler heads. So the nozzle pressure at a sprinkler head is commonly around 30 psi.