The Wilkins 12-500XL is a water pressure reducing valve with integral by-pass check valve designed for potable water lines to reduce high inlet pressure while preventing thermal expansion buildup.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Pressure: 300 psi
• Maximum Working Temperature: 140°F
• Notable Certifications: ASSE 1003, cUPC, CSA B356
• Threaded connections (FNPT): ANSI B1.20.1
  

Other Related Variants:

• 34-500XL: 3/4 Inch size
• 1-500XL: 1 Inch size
• 114-500XL: 1 1/4 Inch size
• 112-500XL: 1 1/2 Inch size
• 212-500XL: 2 1/2 Inch size
• 3-500XL: 3 Inch size

Materials:

• Main Valve Body: Low Lead Cast Bronze ASTM B584
• Access Covers: Low Lead Cast Bronze ASTM B584 / Low Lead Brass
• Fasteners: Stainless Steel, 300 Series
• Stem & Plunger: Low Lead Cast Bronze ASTM B584 / Low Lead Brass
• Elastomers: Buna Nitrile (FDA Approved) / EPDM (FDA Approved)
• Cap Gaskets: Natural Vulcanized Fibre / Acetal (Delrin 500)
• Springs: Oil Tempered Wire, ASTM A 229
• Seat: Stainless Steel, 300 Series

Typical Installation:

Local codes shall govern installation requirements. The assembly shall be mounted in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. The assembly shall be installed with sufficient side clearance for testing and maintenance. The Zurn 12-500XL may be installed in any position. If installed in a pit, vault, or inside application, specify the "SC" sealed cage option. Multiple installations are recommended for wide demand variations or where the desired pressure reduction is more than 3 to 1 (i.e.: 150 psi inlet reduced to 50 psi outlet).

Standards Compliance:

ASSE Listed 1003 (1/2" thru 2 1/2"); cUPC Listed (1/2" thru 2"); CSA Certified B356 (1/2" thru 2"); City of Los Angeles Approved (1/2" thru 2"); NSF/ANSI/CAN 61 & 372 (Less Than 0.25% Weighted Average Lead Content)

Features & Benefits:

• Thermal Expansion Protection: Integral by-pass design prevents buildup of excessive system pressure caused by thermal expansion.
• Balanced Piston Design: Provides smooth and responsive reaction to changes in system flow demand while protecting from inlet pressure changes.
• High Flow Capacity: Suitable for industrial water lines and commercial water systems with pressure range of 25-75 psi.
• Versatile Installation: Can be installed in any position with single union connection for easy maintenance access.

FAQ

Q: What pressure reduction ratio is recommended for the Wilkins 12-500XL?

A: The valve is recommended for pressure reductions not exceeding a 3:1 ratio. For higher ratios, multiple installations are recommended.

Q: Can the Zurn 12-500XL be installed in a pit or vault?

A: Yes, but when installing in pits, vaults, or inside applications, you must specify the "SC" sealed cage option for proper protection.

Q: How do I adjust the outlet pressure on this valve?

A: Use a downstream pressure gauge for adjustment. Turn the adjustment bolt on the bell housing to achieve desired pressure. Do not bottom the adjustment bolt. Factory preset is 50 psi with a range of 25-75 psi.

"Hydrate Everyone, Everywhere!" BottleFillingStations.com | Contact us