1-1/4" Air Scoop, Cast Iron

Taco 432-6 Air Scoop – 1-1/4" Cast Iron, Hydronic Air Separator

The Taco 432-6 Air Scoop is a professional-grade hydronic air separator designed to eliminate entrained air from closed-loop heating, cooling, or combination systems. Its enlarged cast iron chamber and engineered internal baffle design reduce fluid velocity to facilitate the efficient separation of air from circulating water. The 432-6 model provides reliable, maintenance-free operation and incorporates a dedicated connection point for the integration of either a plain steel or diaphragm-type expansion tank, simplifying air elimination and system balance in hydronic applications.

Technical Specifications

• Manufacturer: Taco Comfort Solutions
• Model Number: 432-6
• Product Type: Hydronic Air Scoop / Air Separator
• Connection Size: 1-1/4 inch NPT
• Material: One-piece Cast Iron Body
• Maximum Operating Pressure: 125 PSI
• Maximum Operating Temperature: 300°F (149°C)
• Design Features: Enlarged body with internal baffle for optimal air separation
• Mounting Orientation: Horizontal installation on system supply line
• Expansion Tank Connection: Integral port for plain steel or diaphragm-style expansion tank
• Air Vent Connection: Top tapping provided for automatic or manual air vent installation (vent sold separately)
• Flow Function: Reduces water velocity to allow entrained air to disengage and be vented from the system
• Maintenance: None required – static baffle design with no moving parts
• Applications: Hydronic heating, chilled water, and combination systems
• Construction Standards: Meets or exceeds standard hydronic system design specifications and ASME requirements for cast iron fittings

Performance and Application

The Taco 432-6 Air Scoop is designed to maintain quiet, efficient, and air-free system operation in hydronic circuits. By slowing the system flow and directing water through its internal baffle assembly, the air scoop promotes separation of microbubbles and entrained air from the circulating water. The separated air is vented through a top-mounted air release device, while the integral tank connection supports expansion management and system stabilization. Its cast iron construction ensures high mechanical integrity, long service life, and thermal resilience in continuous-duty heating and cooling systems. This unit provides a cost-effective and maintenance-free means of ensuring system performance and reducing service intervals.

Summary

The Taco 432-6 1-1/4" Cast Iron Air Scoop provides durable, maintenance-free air elimination for professional hydronic system installations. Its engineered baffle design, integrated tank port, and one-piece cast construction deliver consistent air separation performance for heating, cooling, and combination applications across commercial and residential systems.