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The Wilkins 4-ZW209FPCG is a pilot operated pressure reducing valve designed for fire suppression systems, reducing high inlet pressures to safe, stable outlet pressure with grooved end connections and integrated 40XL2 hydraulic check.

Key Specifications:

• Size: 4 Inches
• Inlet Pressure Rating: 300 psi
• Temperature Rating: 33°F to 140°F
• Notable Certifications: UL and C-UL Listed
• Connection Type: Grooved Ends

Other Related Variants:

• 2-ZW209FPG: 2 Inch model size
• 212-ZW209FPG: 2 1/2 Inch model size
• 3-ZW209FPG: 3 Inch model size
• 6-ZW209FPG: 6 Inch model size
• 8-ZW209FPG: 8 Inch model size
• 10-ZW209FPG: 10 Inch model size

Materials:

• Ductile Iron ASTM A536 (Main Valve Body and Cover)
• Stainless Steel (Disc Guide, Seat, Stem, and Spring)
• Buna-N Rubber (Disc)
• Nylon Reinforced Buna-N (Diaphragm)
• Red Epoxy Coating (Internal and External, FDA Approved)
• Copper Tubing and Brass Fittings (Pilotry)

Typical Installation:

The upstream and downstream pressure gauges are required by Underwriters Laboratories (UL). A relief valve of not less than 1/2 inch in size must be installed on the downstream side of the pressure control valve. Adequate drainage for the relief valve discharge must be provided. The valve must be installed in accordance with NFPA 13 for sprinkler systems or NFPA 14 for standpipe and hose systems, and maintained per NFPA 25.

Standards Compliance:

ANSI/AWWA C530; AWWA C606; ANSI B1.20.1; ASTM A536; UL and C-UL Listed; NFPA 13; NFPA 14; NFPA 25

Features & Benefits:

• Pilot Operated Pressure Control: Maintains constant downstream pressure regardless of flow rate or inlet pressure variations, preventing damage to downstream equipment.
• Integrated Hydraulic Check (40XL2): The Zurn 4-ZW209FPCG includes a built-in hydraulic check valve to prevent backflow in fire protection systems.
• Complete Installation Package: Includes wye strainer, inlet and outlet pressure gauges with 3-way isolation valves, and red epoxy coating for corrosion protection.
• Durable Construction: Ductile iron body with stainless steel internal components ensures long-lasting performance in demanding fire suppression applications.

FAQ

Q: What is the adjustable pressure range for the Wilkins 4-ZW209FPCG?

A: The pilot spring range is field adjustable from 50 to 165 psi residual pressure, with a maximum static pressure of 175 psi.

Q: What is the recommended installation orientation for this valve?

A: The recommended installation orientation is horizontal with the valve cover up. For 6 inch and larger valves, horizontal installation with cover up is required due to air bleeding and maintenance considerations.

Q: What are the minimum and maximum flow rates for the 4 inch Wilkins 4-ZW209FPCG valve?

A: The minimum flow rate is 4 GPM, the minimum flow rate to set the valve is 100 GPM, and the maximum flow rate is 1000 GPM.

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