The Wilkins 34-40XL2 is a lead-free in-line single check valve designed for potable water systems, well pump applications, and backflow prevention.

Key Specifications:

• Size: 3/4 Inches
• Maximum Working Pressure: 400 psi WOG
• Maximum Working Temperature: 210°F
• Notable Certifications: UL Classified ANSI/NSF 61, 372
• End Connections: Threaded ANSI B1.20.1

Other Related Variants:

• 1/4-40XL2: 1/4 Inch version
• 3/8-40XL2: 3/8 Inch version
• 1/2-40XL2: 1/2 Inch version
• 1-40XL2: 1 Inch version
• 1 1/4-40XL2: 1 1/4 Inch version
• 1 1/2-40XL2: 1 1/2 Inch version
• 2-40XL2: 2 Inch version

Materials:

• Main Valve Body: Lead Free Brass
• Disc: Polyphenylene Sulfide
• Seat: NBR (Nitrile Butadiene Rubber)
• 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 (0.25% maximum weighted average lead content)

Features & Benefits:

• Lead-Free Compliance: Meets ANSI/NSF 372 standards with 0.25% maximum lead content for safe potable water applications.
• High-Pressure Rating: Rated for 400 psi WOG and 210°F, providing reliable performance in demanding residential and commercial water systems.
• Tight Seating Design: Effectively prevents backflow and eliminates reduced pressure principle discharge caused by pressure fluctuations or water hammer.
• Durable Construction: Features lead-free brass body, stainless steel spring, and chemical-resistant NBR seat for long-lasting service life.

FAQ

Q: What is the Zurn 34-40XL2 designed for?

A: The Zurn 34-40XL2 is ideal for potable domestic and commercial water systems including well pump systems and applications requiring tight seating and backflow prevention.

Q: Can the Wilkins 34-40XL2 be used for sewage or air compressor applications?

A: No, the Wilkins 34-40XL2 is not recommended for installation in sewage ejector piping or reciprocating air compressor service.

Q: What certifications does the Zurn 34-40XL2 have?

A: The Zurn 34-40XL2 is UL Classified and complies with ANSI/NSF Standard 61 and 372, ensuring it meets lead-free requirements for potable water systems.

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