▸ Key Features:
• Automatic flow regulation for hydronic HVAC systems
• Rated for 3.00 GPM (per OEM nameplate)
• Cast-iron housing with threaded end ports
• Dual brass test ports for differential pressure measurement
• Helps maintain system balance under varying pressure conditions
• Suitable for chilled water, hot water, and general HVAC loops
▸ Applications:
• Hydronic HVAC system balancing
• Fan coil and air handler coil circuits
• Chilled water and hot water branches
• Commercial building commissioning and flow verification
• Industrial water distribution loops requiring stable flow
▸ Alternative Model Numbers:
3522-FA0
3522FAO (letter O variant)
3500 Series Flow Valve
Griswold 3522
3522-F-A0
▸ Common Misspellings or Phrasing:
3522FAD
3522FAO
3521FA0
Griswald 3522
Flow Control Valve 3522F
