Zurn Wilkins 6" 350ASTOSYG Double Check Valve Assembly | Stainless Steel DCVA, OS&Y Gate Valves, Grooved Connections

Zurn Wilkins 6" 350ASTOSYG Double Check Valve Assembly | Stainless Steel DCVA with OS&Y Gate Valves, Grooved Connections.

Product Overview:

The Zurn Wilkins 6-350ASTOSYG is a 6-inch Double Check Valve Assembly (DCVA) engineered to protect potable water supplies from backflow contamination in non-health hazard applications. Constructed with a lead-free, corrosion-resistant 304L stainless steel body, this assembly features full-port OS&Y gate valves and grooved connections for ease of installation. Its compact design is ideal for retrofits and new builds alike—offering high performance and simplified maintenance without removing the unit from the pipeline.

Features & Benefits:

• Short Lay-Length: Fits compact installations and retrofit projects with ease

• Lead-Free Certified: Fully compliant with NSF/ANSI 372 standards

• Stainless Steel Durability: 304L stainless steel body resists corrosion and extends product life

• Improved Flow Design: Enhances performance in lower-pressure systems

• Field-Ready Access: Internal checks accessible in-line for hassle-free maintenance

• OS&Y Gate Valves Included: Full port, open stem & yoke valves provide isolation and system protection

• Retrofit Compatibility: Matches with 300ASTR series for convenient replacement

Specifications:

• Size: 6"

• Body & Cover: 304L Stainless Steel

• Check Valve Internals: NORYL™ thermoplastic, stainless steel springs, EPDM elastomers

• Seals: EPDM Seal Ring (FDA Approved), Buna N O-Rings (FDA Approved)

• End Connections:

  • Grooved: AWWA C606

  • Flanged: ANSI B16.1 Class 125

• Working Pressure: 175 PSI

• Test Pressure: 350 PSI

• Max Temperature: 140°F

• Certifications:

  • ASSE® 1015

  • AWWA C510 & C550

  • NSF/ANSI 61 & 372

  • FM®, UL®, C-UL®, CSA®, IAPMO® Listed

  • USC Foundation Approved

Installation Tips:

• Install between 12"–30" above floor level with adequate drainage

• Maintain clear side access for test ports and check valve service

• Always follow local plumbing codes and manufacturer guidelines

• Ensure unit is installed above flood level—submersion not permitted

• Suitable for both horizontal and vertical configurations where approved

FAQs:

Q: What type of backflow protection does this assembly offer?
A: It provides double check protection suitable for non-health hazard conditions.

Q: Can this be used for drinking water applications?
A: Yes, it’s certified lead-free and safe for potable water systems.

Q: Do I need to remove the unit to service the check valves?
A: No, the internal checks are accessible without removing the assembly from the pipeline.

Q: Is it compatible with existing 300ASTR installations?
A: Yes, it is designed for easy retrofit to existing systems using 300ASTR models.