The Wilkins 12-40XL2 is a lead-free in-line single check valve designed for potable water systems, well pump applications, and tight seating requirements.

Key Specifications:

• Size: 1/2 Inches
• Maximum Working Water Pressure: 400 psi WOG
• Maximum Working Water Temperature: 210°F
• Notable Certifications: UL Classified, NSF 61, NSF 372
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 114-40XL2: 1 1/4 Inches size
• 1-40XL2: 1 Inches size
• 2-40XL2: 2 Inches size
• 34-40XL2: 3/4 Inches size

Materials:

• Body: Lead Free Brass
• Disc: Polyphenylene Sulfide
• Seat: NBR
• Spring: Stainless Steel, 300 Series
• Retainer: Polyacetal

Typical Installation:

Local codes shall govern installation requirements. To be installed in accordance with the manufacturer's instructions and the latest edition of the Uniform Plumbing Code. Not recommended for installation in sewage ejector piping or for reciprocating air compressor service.

Standards Compliance:

UL Classified; ANSI/NSF Standard 61; ANSI/NSF Standard 372

Features & Benefits:

• Lead-Free Compliance: Meets NSF 372 with 0.25% maximum weighted average lead content for safe potable water use.
• High Pressure & Temperature Rating: Rated for 400 psi WOG and 210°F, ensuring reliable performance in demanding conditions.
• Tight Seating Design: Provides positive backstop to eliminate reduced pressure principle backflow preventer discharge caused by pressure fluctuations or water hammer.
• Durable Construction: Lead-free brass body with stainless steel spring and engineered polymer components for long-lasting service.

FAQ

Q: What applications is the Zurn 12-40XL2 suitable for?

A: The Zurn 12-40XL2 is ideal for potable domestic and commercial water systems such as well pump systems and applications requiring tight seating. It can be used as a positive backstop to eliminate reduced pressure principle backflow preventer discharge.

Q: Can this valve be used for sewage ejector piping?

A: No, the Wilkins 12-40XL2 is not recommended for installation in sewage ejector piping or for reciprocating air compressor service.

Q: What are the connection specifications for this check valve?

A: The valve features threaded end connections compliant with ANSI B1.20.1 standard.

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