The Wilkins 12-P1500XL is a lead-free pressure relief valve designed for cold water service protection against excessive pressure buildup in commercial and industrial applications.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 175 PSI
• Maximum Working Water Temperature: 210°F
• Notable Certifications: NSF/ANSI 372 certified
• Threaded Connections: MNPT x FNPT

Other Related Variants:

• 34-P1500XL: 3/4 Inches version

Materials:

• Low Lead Cast Bronze main valve body
• Brass access covers and internals
• Stainless Steel internals and springs
• Silicone elastomers
• Buna Nitrile elastomers

Typical Installation:

Local codes shall govern installation requirements. Unless otherwise specified, the assembly shall be mounted in accordance with the manufacturers' instructions and the latest edition of the Uniform Plumbing Code. Assembly shall be installed with adequate drain and sufficient side clearance for testing and maintenance. The installation shall be made so that no part of the unit can be submerged or where relief valve discharge could cause damage. Suitable for static relief, low capacity pump relief, passive solar, and similar uses in commercial and industrial applications.

Standards Compliance:

NSF/ANSI 372 certified by IAPMO R&T; ANSI B1.20.1

Features & Benefits:

• Adjustable Pressure Relief: Calibrated adjustments from 25 to 175 PSI provide flexible protection for varying system pressures.
• Lead-Free Construction: NSF/ANSI 372 certified with 0.25% maximum weighted average lead content ensures safe potable water compliance.
• Durable Materials: Low-lead cast bronze body with stainless steel internals delivers long-lasting performance in demanding applications.
• Compact Design: Small footprint with standard threaded connections allows for easy installation in tight spaces with minimal side clearance requirements.

FAQ

Q: What is the difference between the Wilkins 12-P1500XL, P1520XL, and P1550XL models?

A: The Zurn 12-P1500XL offers calibrated adjustments from 25 to 175 PSI, the P1520XL features preset relief settings at 50, 75, 100, and 125 PSI, while the P1550XL provides fixed relief settings at 75 PSI and 125 PSI.

Q: Can this valve be used for thermal expansion control?

A: These devices are designed for pressure relief only and should be used in conjunction with other temperature limiting devices. They are suitable for static relief, pump relief, and thermal expansion control applications when properly paired with temperature protection equipment.

Q: What connection sizes are available for the Zurn 12-P1500XL?

A: The valve is available in 1/2 inch and 3/4 inch sizes with threaded MNPT x FNPT connections per ANSI B1.20.1 standard. The 1/2 inch model is also available with FNPT outlet only configuration.

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