Wilkins 4-350ASTDA Double Check Detector Backflow Preventer

Product Description

The Wilkins 4-350ASTDA Double Check Detector Assembly protects against both backsiphonage and backpressure in low health hazard, fire protection applications. Its stainless steel body, access covers, internals, fasteners, and springs are corrosion-resistant for reduced maintenance costs. Featuring a metered bypass system, the 350ASTDA efficiently detects leaks and any unauthorized water use.

• Short lay-length ensures easy installation in compact spaces
• Metered bypass detects leaks and unauthorized water use for reduced maintenance and repair costs
• High quality 304L grade stainless steel body and access covers reduces corrosion exposure

Product Highlights

Compliant with horizontal and vertical installation. Lead-free law compliant. ASSE Listed 1048. AWWA Compliant C510 (with gates only), and C550. UL Classified. C-UL Classified. FM Approved.

Product Information

Standard Information

• Brand: WILKINS
• Manufacturer Part Number: 4-350ASTDA

Technical Specifications

• Type: Backflow Preventer
• Series/Model: Model 350ASTDA
• Nominal Size: 4 IN
• Connection Type: Grooved End
• Pressure Rating: 175 PSI
• Temperature Rating: 140 DEG F
• Body Material: 304L Stainless Steel
• Stem Material: Stainless Steel
• Trim Material: EPDM Disc
• Material Standard: Stem: ASTM A276
• Industry Standards: ASSE Listed 1048, Certified To NSF/ANSI 61, CSA Certified B64.5, AWWA Compliant C510 And C550, FM Approved, UL/CUL Classified, AWWA C606
• Lead Free: Yes