WEFLO F1322-350 Flanged Swing Check Valve UL/FM 350 PSI

WEFLO F1322-350 UL/FM Flanged Swing Check Valve – 350 PSI

The WEFLO F1322-350 is a premium flanged swing check valve engineered for demanding fire protection systems. With a 350 PSI working pressure rating — one of the highest in the industry — this valve offers superior safety margin and performance compared to standard 300 PSI models.

Key Features & Specifications:

• 350 PSI Working Pressure — Highest-rated UL/FM swing check valve available (extra safety over most competitors)
• UL Listed & FM Approved — Certified for fire sprinkler risers, standpipes, fire pumps, and other critical backflow prevention applications
• Full Waterway Design — Maximizes flow capacity with minimal pressure loss
• Resilient EPDM Seated Disc — Provides bubble-tight shutoff against a bronze seat ring
• Flanged Ends — ANSI B16.1 Class 125 / ASME B16.42 Class 150 compatible
• Ductile Iron Construction — ASTM A536 Grade 65-45-12 body and bonnet with fusion-bonded epoxy coating (AWWA C550) for long-term corrosion resistance
• Bolted Bonnet — Easy access for inspection and maintenance without removing the valve from the pipeline
• Versatile Installation — Approved for horizontal or vertical mounting

WEFLO F1322-350 DATA SHEET

Why Choose the WEFLO F1322-350?

• Higher pressure rating than generic imports
• Reliable performance trusted in fire protection systems
• Excellent balance of quality, certification, and value
• Ships from our Illinois warehouse for faster delivery

Note: Always confirm exact project requirements, flange facing, and local Authority Having Jurisdiction (AHJ) approvals. Data sheet available upon request.

Certifications: FM,UL,CUL,LPCB,NSF/ANSI 61,NSF/ANSI 372,CE

This valve features a durable red epoxy finish required for most fire-prevention installations and recognized across NFPA-compliant systems.

Designed specifically for fire prevention systems, this UL/FM certified valve provides reliable flow control for commercial sprinkler and riser applications.

Recommended accessory:  NASCO Gasket and Bolt Kit.