Protocols

Operating sprinkler spray head

Pressure-Regulating Spray Heads

Pressure-regulating spray heads are designed for use in areas with high or fluctuating water pressure. These products include a built-it regulator that maintains a more constant pressure for optimal nozzle performance.
 

Typically for spray nozzles, 30 psi provides the best performance. For rotary nozzles the preferred operating pressure is 40-45 psi. Correct nozzle pressure helps the nozzles distribute the water more evenly and reduces water waste caused by excessive pressure.
 

SWAT Testing Protocol

Version 3.0 of the protocol was released in May 2012 and is the current testing protocol.
 

For questions about SWAT or pressure-regulating spray heads, contact the Irrigation Association (703.536.7080; swat@irrigation.org).
 

Archives

Draft 3: Test Protocol

Public Comment Summary & Response for Draft 3 Pressure Regulating Sprinklers - updated May 1, 2012
 

Draft 3 Testing Protocol Pressure Regulated Heads - updated March 28, 2012
 

Draft 2: Test Protocol

Public Comment Summary & Response for Draft 2 Pressure Regulating Sprinklers - updated March 12, 2012

2nd Draft Pressure Regulated Heads Public Comment - updated Dec. 15, 2011
 

2nd Draft Pressure Regulated Heads - updated Sept. 13, 2011
 

Draft 1: Test Protocol

Public Comment Summary & Response for Draft 1 Pressure Regulating Sprinklers - updated April 21, 2011

1st Draft Pressure Regulated Sprinklers