Warranty

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6363
BACKFLOW
PREVENTERS
BACKFLOW PREVENTERS
ACCESSORIES STRAINERS
AUTOMATIC
CONTROL VALVES
PRESSURE
REDUCING VALVES
FIRE
PROTECTION VALVES
THERMOSTATIC
MIXING VALVES RELIEF VALVES
MISCELLANEOUS
PLUMBING PRODUCTS REPAIR KITS
APPLICATIONS
High capacity pressure relief or upstream pressure
control is the function of the modulating ZW205
pressure relief / pressure sustaining valve.
FEATURES
• 1-1/4” - 16”
• Globe, reduced port globe, and angle bodies
available
• Pilot spring range 50-200 psi
• Pressure rating: 150 Class flanged, 250 psi max; 300
Class flanged or grooved, 400 psi max; Threaded,
400 psi max
• 140°F max
• Pressure gauge, wye strainer, isolation valves, and
epoxy coating come standard
• When used in a by-pass line, the Model ZW205
functions as a relief valve protecting against
potentially damaging surges. Can also be used to
sustain pressure when plumbed in line
• Closing speed control (Standard on 4" or smaller)
APPROVALS AND APPLICABLE
SPECIFICATIONS
• ANSI/AWWA C530
• Certified to NSF/ANSI 61 and 372
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
ZW205: PRESSURE RELIEF, PRESSURE SUSTAINING VALVE,
CLASS 150, FLANGED X FLANGED
- -ZW 2,679.20
 -ZW 2,726.90
- -ZW 2,910.90
 -ZW 3,123.60
 -ZW 4,454.30
 -ZW 6,476.50
 -ZW 10,579.50
 -ZW 14,557.40
 -ZW 18,781.70
 -ZW 30,122.70
 -ZW 35,101.00
ZW205Y: PRESSURE RELIEF, PRESSURE SUSTAINING VALVE,
CLASS 3000, FLANGED X FLANGED
- -ZWY 2,857.60
 -ZWY 2,911.90
- -ZWY 3,113.70
 -ZWY 3,587.30
 -ZWY 5,179.80
 -ZWY 7,762.20
 -ZWY 12,127.00
 -ZWY 16,104.70
 -ZWY 19,544.50
 -ZWY 32,425.40
 -ZWY 36,754.90
ZW205: OPTIONS
CLOSING SPEED CONTROL (L) OPTION (STANDARD ON
MODEL ZW205 4" AND SMALLER)
 -  L Option 144.40
HIGH PRESSURE RANGE PILOT (150-300 PSI) (HP) OPTION
- -  HP Option 105.90
LOW PRESSURE RANGE PILOT (30-90 PSI) (LP) OPTION
- -  LP Option No Charge
LOW PRESSURE RANGE PILOT (10-35 PSI) (LP2) OPTION
- -  LP Option No Charge
LOW PRESSURE RANGE PILOT (5-15 PSI) (LP3) OPTION
- -  LP Option No Charge
TYPICAL INSTALLATION
BOOSTER PUMP
ZW205
CHECK VALVE (ZW218)
DIRECTION OF FLOW
For threaded/grooved end connections and angle body
pricing, use Class 150 valve pricing.
For reduced port body pricing, see Options and
Accessories on page 70.
ZW205 SERIES – PRESSURE RELIEF, PRESSURE SUSTAINING VALVE