Warranty

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BACKFLOW
PREVENTERS
BACKFLOW PREVENTERS
ACCESSORIESSTRAINERS
AUTOMATIC
CONTROL VALVES
PRESSURE
REDUCING VALVES
FIRE
PROTECTION VALVES
THERMOSTATIC
MIXING VALVESRELIEF VALVES
MISCELLANEOUS
PLUMBING PRODUCTSREPAIR KITS
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.
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
ZW221: ONE WAY ALTITUDE VALVE, CLASS 150, FLANGED
X FLANGED
- -ZW 3,194.60
 -ZW 4,432.50
- -ZW 5,204.60
 -ZW 5,271.10
 -ZW 6,229.50
 -ZW 7,707.10
 -ZW 11,088.10
 -ZW 12,232.80
 -ZW 18,595.40
 -ZW 28,205.80
 -ZW 33,130.90
ZW221Y: ONE WAY ALTITUDE VALVE, CLASS 300, FLANGED
X FLANGED
- -ZWY 3,372.90
 -ZWY 4,617.30
- -ZWY 5,407.20
 -ZWY 5,735.10
 -ZWY 6,954.70
 -ZWY 8,992.60
 -ZWY 12,635.50
 -ZWY 13,780.10
 -ZWY 19,358.10
 -ZWY 30,508.70
 -ZWY 34,785.00
SIZE
LEAD-FREE
PART NUMBER
LEAD-FREE
LIST PRICE EA.
ZW222: TWO WAY ALTITUDE VALVE, CLASS 150, FLANGED
X FLANGED
- -ZW 3,394.30
 -ZW 4,632.20
- -ZW 5,404.20
 -ZW 5,470.70
 -ZW 6,429.20
 -ZW 7,906.70
 -ZW 11,274.40
 -ZW 12,365.90
 -ZW 18,688.50
 -ZW 28,312.30
 -ZW 33,250.70
ZW222Y: TWO WAY ALTITUDE VALVE, CLASS 300, FLANGED
X FLANGED
- -ZWY 3,572.70
 -ZWY 4,817.00
- -ZWY 5,606.80
 -ZWY 5,934.90
 -ZWY 7,154.40
 -ZWY 9,192.20
 -ZWY 12,821.90
 -ZWY 13,913.10
 -ZWY 19,451.20
 -ZWY 30,615.10
 -ZWY 34,904.70
TYPICAL INSTALLATION
APPLICATIONS
The ZW221 and ZW222 Altitude Level Control Valves
accurately control water level based on relative pressure,
without the need for floats and sensors.
The ZW221 One Way Altitude Level Control Valve
controls water level in a tank or reservoir.
The ZW222 Two Way Altitude Level Control Valve
controls water level in a tank or reservoir, while also
allowing reverse flow, so that only one line is needed
to the tank/reservoir. When upstream supply pressure
drops below tank pressure, main valve opens, allowing
water to flow back upstream.
FEATURES
• 1-1/4" - 16"
• Globe, reduced port globe, and angle bodies
available
• Pressure rating: 150 Class flanged, 250 psi max; 300
Class flanged or grooved, 400 psi max; threaded,
400 psi max
• 140°F max
• Stainless steel braided hoses on pilotry standard for
corrosion resistance
• Epoxy coating standard
• Standard valves come with one set point – the valve
opens to fill the tank and will close drip-tight once
the high water level is reached
• Adjustment ranges available from 5’ to 230’
• "D" Delayed Opening/Dual Set Point Option delays
opening of valve until water reaches a lower set point
APPROVALS AND APPLICABLE
SPECIFICATIONS
• ANSI/AWWA C530
• Certified to NSF/ANSI 61 and 372
ZW221/ZW222 SERIES – ALTITUDE LEVEL CONTROL VALVES