WEFLO F3322B / F3322 SHOTGUN RISER CHECK VALVE UL/FM

High-Performance Grooved-End Shotgun Riser Check Valves

NASCO Supply carries the full line of Weflo riser mount check valves, engineered for reliable performance in wet pipe sprinkler systems, pre-action systems, and fire riser assemblies. These UL Listed and FM Approved swing check valves feature a spring-loaded disc for fast, positive closure, minimizing water hammer and ensuring dependable backflow prevention.

Without Trim (Bare Valve – F3322B)

The Weflo bare riser check valve is a compact, heavy-duty grooved-end valve designed for installations where you already have custom trim or prefer to build your own assembly.

Key Features:

• Ductile iron body with fusion-bonded epoxy coating for superior corrosion resistance
• Bronze seat ring and rubber-faced disc for bubble-tight shutoff
• Stainless steel spring and hinge pins
• Grooved ends (AWWA C606) for fast, flexible installation
• Low pressure loss and excellent flow characteristics
• 350 psi working pressure rating
• Available in sizes 1¼" through 12"

Ideal for: Contractors who want maximum flexibility or already stock separate trim components.

With Trim (Full Shotgun Riser Assembly – F3322)

The complete Weflo shotgun riser assembly comes fully trimmed and ready for installation. This all-in-one unit includes the check valve plus the factory-matched trim kit.

Trim Kit Includes:

• Angle drain valve
• Two pressure gauges (water and air)
• Interconnecting nipples, plugs, and fittings
• All necessary components for a code-compliant riser

Key Benefits:

• Saves significant field labor and installation time
• Ensures proper component compatibility and reliable performance
• 300 psi working pressure rating (with trim)
• Clean, professional appearance with everything pre-assembled

Ideal for: Quick installations, new construction, and maintenance projects where speed and code compliance are priorities.

Why Choose Weflo Riser Valves from NASCO Supply?

• Competitive pricing with volume discounts available
• Fast shipping from our Chicago-area warehouse
• Expert technical support for sizing and installation questions
• Full line of sizes from 1¼" to 12"

Whether you need the bare valve only or the complete trimmed shotgun riser, Weflo delivers dependable, code-approved performance at an excellent value.