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The Wilkins 8-ZW209FPG is a pilot-operated fire protection pressure reducing valve designed to reduce high inlet pressures to safe, stable outlet pressures in fire suppression systems.

Key Specifications:

• Size: 8 Inches
• Inlet Pressure Rating: 300 psi maximum
• Temperature Rating: 33°F to 140°F
• Notable Certifications: UL and C-UL Listed
• Connection Type: Grooved Ends IPS

Other Related Variants:

• 2-ZW209FPG: 2 Inches valve size
• 212-ZW209FPG: 2 1/2 Inches valve size
• 3-ZW209FPG: 3 Inches valve size
• 4-ZW209FPG: 4 Inches valve size
• 6-ZW209FPG: 6 Inches valve size
• 10-ZW209FPG: 10 Inches valve size

Materials:

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

Typical Installation:

The Zurn 8-ZW209FPG requires upstream and downstream pressure gauges as mandated 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 with adequate drainage for the relief valve discharge. The valve must be installed in accordance with NFPA 13 for sprinkler systems or NFPA 14 for standpipes and hose systems, and maintained according to NFPA 25. Recommended installation orientation is horizontal with valve cover up; 6 inch and larger valves should only be installed horizontally due to air bleeding and maintenance requirements.

Standards Compliance:

ANSI/AWWA C530; AWWA C606; ANSI B1.20.1; ANSI B16.42; NFPA 13; NFPA 14; NFPA 25; UL Listed; C-UL Listed

Features & Benefits:

• Pilot-Operated Pressure Control: Reacts to downstream pressure changes for modulating valve action, ensuring constant outlet pressure regardless of flow rate or inlet pressure variations.
• Comprehensive Standard Package: Includes wye-type strainer, inlet and outlet pressure gauges with 3-way isolation valves, and red epoxy coating for corrosion protection.
• Adjustable Control Range: Field-adjustable pilot spring range from 50 to 165 psi residual pressure with 175 psi maximum static pressure for flexible system configuration.
• Durable Construction: Ductile iron body with stainless steel internal components and FDA-approved red epoxy coating provides long-lasting performance in fire protection applications.

FAQ

Q: What is the minimum inlet pressure required for the Wilkins 8-ZW209FPG to operate properly?

A: The minimum inlet pressure must be at least 10 psi higher than the set point or the additional body friction loss at intended flow, whichever is higher. For example, if set to 150 psi and flowing 2000 GPM with 20 psi friction loss, minimum inlet would be 170 psi.

Q: Can the 8-ZW209FPG be installed vertically?

A: No. The recommended installation orientation is horizontal with the valve cover up. Valves 6 inches and larger should only be installed horizontally due to difficulty in properly bleeding air and performing maintenance when installed vertically.

Q: What are the flow rate specifications for the 8 inch model?

A: The 8-ZW209FPG has a minimum flow rate to set the valve of 400 GPM, a minimum flow rate of 15 GPM, and a maximum flow rate of 4000 GPM based on Schedule 40 pipe at approximately 20 ft/sec continuous flow.

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