The Zurn Wilkins Model ZW209 is a 10-inch pilot-operated pressure reducing valve with Class 150 flanged connections, engineered to provide safe and stable downstream pressure. It features a durable ductile iron body with internal and external epoxy coating for superior corrosion resistance. This valve includes standard isolation valves and pressure gauges for convenient maintenance and repair. Certified to NSF/ANSI/CAN 61 and ANSI/AWWA C530 standards, it ensures lead-free operation and maintains consistent pressure regulation across varying flow rates. Item number 10-ZW209FPX.
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Connections and Installation
This Zurn Wilkins ZW209 valve is designed for Class 150 Flange connections.
For 10-inch valves, horizontal installation with the valve cover up is recommended to ensure proper air bleeding and simplify maintenance.
The Zurn Wilkins Model ZW209 is a pilot operated pressure reducing valve designed to accurately reduce high inlet pressures to a safe and stable outlet pressure in various applications.
This valve effectively modulates between closed and open positions to ensure a constant downstream set pressure, with pressure regulation independent of flow rate, minimizing pressure loss.
Key Features
Features epoxy coating internally and externally for enhanced corrosion protection.
Includes isolation valves and pressure gauges as standard for simplified maintenance and repair.
The pilot assembly reacts to downstream pressure changes, allowing the main valve to modulate and seal shut precisely.
Designed for minimal pressure loss through the valve, regardless of flow rate.
Materials
Main valve body and bonnet constructed from Ductile Iron ASTM A536.
Disc guide, seat, stem, and spring are made of Stainless Steel.
Disc is Buna-N Rubber; diaphragm is Nylon Reinforced Buna-N.
Note: The closing speed control (optional) on this valve should always be open at least three (3) turns off its seat.
Specifications
Valve Type: Pilot Operated Pressure Reducing Valve
Model: ZW209
Nominal Size: 10 inch
Body Configuration: Globe Style
End Connection: Class 150 Flange
Main Valve Body Material: Ductile Iron ASTM A536
Main Valve Bonnet Material: Ductile Iron ASTM A536
Disc Guide Material: Stainless Steel
Seat Material: Stainless Steel
Disc Material: Buna-N Rubber
Diaphragm Material: Nylon Reinforced Buna-N
Stem Material: Stainless Steel
Spring Material: Stainless Steel
Performance
Maximum Pressure Rating: 250 psi (ANSI Class 150 Flange)
Minimum Inlet Pressure: 10 PSI
Temperature Rating: Water 33°F to 140°F
Pilot Spring Range: 15-120 psi
Maximum Continuous Flow: 4900 GPM
Maximum Intermittent Flow: 6150 GPM
Minimum Continuous Flow: 300 GPM
Certificates & Approvals
ANSI/AWWA C530
NSF/ANSI/CAN 61 (0.25% MAX. WEIGHTED AVERAGE LEAD CONTENT)
Lead Free
Epoxy Coated, FDA Approved
FAQs
What is the primary function of the Zurn Wilkins ZW209 Pressure Reducing Valve?
The Zurn Wilkins ZW209 is designed to reduce high inlet pressures to a safe and stable outlet pressure, maintaining a constant downstream set pressure regardless of flow rate.
What materials are used in the construction of the ZW209 valve?
The main valve body and bonnet are made of Ductile Iron ASTM A536, while the disc guide, seat, stem, and spring are Stainless Steel. The disc is Buna-N Rubber, and the diaphragm is Nylon Reinforced Buna-N.
What are the pressure and temperature limits for this 10-inch ZW209 valve?
This valve has a maximum pressure rating of 250 psi for Class 150 Flange connections, with a minimum inlet pressure of 10 PSI. It is rated for water temperatures from 33°F to 140°F.
Does the ZW209 valve come with any certifications?
Yes, the ZW209 valve meets the requirements of ANSI/AWWA C530 and is certified to NSF/ANSI/CAN 61, ensuring it is lead-free. It is also epoxy coated and FDA approved.
What features contribute to the durability and ease of maintenance of the ZW209?
The valve features internal and external epoxy coating for corrosion protection. It comes standard with isolation valves and pressure gauges, facilitating quick and easy maintenance or repair procedures.
