Wilkins 8-ZW209 | 8" Pilot Operated Pressure Reducing Valve
Wilkins 8-ZW209 | 8" Pilot Operated Pressure Reducing Valve is backordered and will ship as soon as it is back in stock.
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Wilkins 8-ZW209 | 8" Pilot Operated Pressure Reducing Valve
NOTICE: Product images may vary from the actual item due to differences in size or configuration options.
The Wilkins 8-ZW209 is an 8 inch pilot-operated pressure reducing valve designed to reduce high inlet pressures to stable, safe outlet pressures in demanding applications.
Key Specifications:
- Size: 8 Inches
- Pilot Spring Range: 15–120 psi
- Temperature Rating: 33°F to 140°F
- Notable Certifications: NSF/ANSI/CAN 61, ANSI/AWWA C530
- End Connections: ANSI Class 150 Flanged
Other Related Variants:
- 2-ZW209: 2 Inch model size
- 212-ZW209: 2 1/2 Inch model size
- 3-ZW209: 3 Inch model size
- 4-ZW209: 4 Inch model size
- 6-ZW209: 6 Inch model size
Materials:
- Ductile iron body (ASTM A536) with fusion epoxy coating
- Ductile iron bonnet (ASTM A536)
- Stainless steel disc guide
- Stainless steel seat
- Stainless steel stem
- Stainless steel spring
- Buna-N rubber disc
- Nylon reinforced Buna-N diaphragm
- Copper tubing
- Brass fittings
Typical Installation:
The recommended installation orientation is horizontal with the valve cover up. 6 inch and larger valves should only be installed horizontally with the valve cover up due to the difficulty of properly bleeding air out of the cover and performing maintenance on valves installed in the vertical orientation.
Standards Compliance:
ANSI/AWWA C530; NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Features & Benefits:
- Stable Pressure Regulation: Pilot assembly reacts to downstream pressure changes, modulating the main valve to ensure constant outlet pressure regardless of flow rate or inlet pressure variations.
- Corrosion Protection: FDA approved fusion epoxy coating on all internal and external ferrous surfaces ensures long-term durability in harsh water environments.
- Easy Maintenance: Standard inclusion of isolation valves, inlet/outlet pressure gauges, and wye strainer allows for quick field adjustments and simplified service without system shutdown.
- Tight Shutoff: Once downstream pressure reaches pilot setting, the Zurn 8-ZW209 main valve seals shut to prevent damage to downstream equipment and systems.
FAQ
Q: What is the minimum inlet pressure required for the Wilkins 8-ZW209?
A: The minimum inlet pressure is 10 psi above the set point or the additional body friction loss at the intended flow rate, whichever is higher.
Q: Can the Zurn 8-ZW209 be installed vertically?
A: No, 8 inch valves should only be installed horizontally with the valve cover up due to difficulty bleeding air and performing maintenance in vertical orientation.
Q: What is the adjustable pressure range for this valve?
A: The pilot assembly is field adjustable from 15 psi to 120 psi. Optional low pressure (5-25 psi) and high pressure (30-300 psi) pilots are available.
NOTICE: Do not use with water that is unsafe or of unknown quality without adequate disinfection either before or after the system.
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Always consult with a licensed professional and check local codes before installation. For further details, check the Owners Manual.
Contact us at support@bottlefillingstations.com with any questions.
