Warranty

For additional product information, please visit www.zurn.com.
100100
BACKFLOW
PREVENTERS
BACKFLOW PREVENTERS
ACCESSORIESSTRAINERS
AUTOMATIC
CONTROL VALVES
PRESSURE
REDUCING VALVES
FIRE
PROTECTION VALVES
THERMOSTATIC
MIXING VALVESRELIEF VALVES
MISCELLANEOUS
PLUMBING PRODUCTSREPAIR KITS
APPLICATIONS
Designed for installation on cold water service lines as a
means of protection against excessive pressure buildup.
These devices are for pressure only and should be used
in conjunction with other temperature limiting devices.
Also suitable for static relief, low capacity pump relief,
passive solar, thermal expansion relief and other similar
uses in commercial and industrial applications.
FEATURES
• 1/2”, 3/4”
• Pressure settings 50, 75, 100 or 125 psi
• High capacity pressure relief valve
• All bronze body
• Male NPT inlet, female NPT outlet
APPROVALS AND APPLICABLE
STANDARDS
• Certified to NSF/ANSI 372
SIZE INLET X OUTLET CONNECTIONS / OPTIONS
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
P1520XL: THERMAL EXPANSION PRESSURE RELIEF VALVE
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
 MNPT  x FNPT  Set at  -PXL- 70.90
APPLICATIONS
Designed for installation on cold water service lines as a
means of protection against excessive pressure buildup.
These devices are for pressure only and should be used
in conjunction with other temperature limiting devices.
Also suitable for static relief, low capacity pump relief,
passive solar, thermal expansion relief and other similar
uses in commercial and industrial applications.
FEATURES
• 1/2”, 3/4”
• For pressure relief only
• Pressure settings 75 or 125 psi
• Male NPT inlet, female NPT outlet
APPROVALS AND APPLICABLE
STANDARDS
• Certified to NSF/ANSI 372
SIZE INLET X OUTLET CONNECTIONS / OPTIONS
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
P1550XL: THERMAL EXPANSION PRESSURE RELIEF VALVE
 MNPT  x FNPT  Set at  -PXL- 35.40
 MNPT  x FNPT  Set at  -PXL- 35.40
 MNPT  x FNPT  Set at  -PXL- 40.80
 MNPT  x FNPT  Set at  -PXL- 40.80
TYPICAL INSTALLATION
INLET
TO DRAIN
PRESSURE RELIEF VALVE
(MODEL P1520XL)
OUTLET
WATER PRESSURE
REDUCING VALVE
(MODEL NR3XL)
DIRECTION OF FLOW
TYPICAL INSTALLATION
DIRECTION OF FLOW
PUMP INLET
DRAIN
STORAGE
TANK
OUTLET
PRESSURE RELIEF V
ALVE
(MODEL
P1550XL)
INLET
TO DRAIN
OUTLET
STORAGE TANK
PRESSURE
RELIEF VALVE
(MODEL
P1550XL)
VACUUM
RELIEF VALVE
(MODEL VR10XL)
P1520XL SERIES – THERMAL EXPANSION PRESSURE RELIEF VALVE
P1550XL SERIES – THERMAL EXPANSION PRESSURE RELIEF VALVE
ACCESSORIES
• Water pressure reducing valve (Model NR3XL)
• Vacuum relief valve (Model VR10XL)
ACCESSORIES
• Water pressure reducing valve (Model NR3XL)
• Vacuum relief valve (Model VR10XL)