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Cast iron HVAC air eliminator model 792 angle inline configuration

BELL AND GOSSETT

BELL AND GOSSETT 792 Eliminator HVAC Control

SKU CH-2R2Y-Z5FSW

A cast-iron float-type air vent rated to 250 psi for releasing air from hydronic heating, chilling and glycol systems

  • Removes trapped air from hydronic systems with a float-type vent
  • Handles up to 250 psi maximum allowable pressure for demanding installations
  • Durable cast iron body resists corrosion in water and glycol applications
  • Suitable for centrifugal pumps with specific gravity greater than .7
  • Angle or in-line configuration with female inlet connection for flexible piping

BELL & GOSSETT 792 Eliminator Air Vent

The BELL & GOSSETT 792 Eliminator is a cast iron float-type air vent designed for hydronic heating and chilling systems. It releases air from hot or cold water and glycol mains in commercial and industrial installations. The unit suits centrifugal pumps with a specific gravity greater than .7. It is not intended for low-pressure residential radiators or steam systems requiring a different vent mechanism.

Pressure Rating and Application Limits

The vent handles a maximum allowable pressure of 250 psi across the stated media range. This headroom covers typical hydronic loop pressures encountered in centrifugal pump circuits. Systems operating above this limit or using fluids outside the specified gravity range will exceed the design envelope. The float mechanism is calibrated for water and glycol; it does not vent air from oil or refrigerant lines.

Cast Iron Body and In-Line Angle Configuration

The cast iron body provides durability against corrosion in closed-loop water and glycol applications. Its angle and in-line configuration allows flexible piping orientation without additional fittings. The female inlet port accepts standard pipe threads directly. No external power or control wiring is required for operation.

Highlights

  • Removes trapped air from hydronic systems with a float-type vent
  • Handles up to 250 psi maximum allowable pressure for demanding installations
  • Durable cast iron body resists corrosion in water and glycol applications
  • Suitable for centrifugal pumps with specific gravity greater than .7
  • Angle or in-line configuration with female inlet connection for flexible piping

Specifications

BrandBELL & GOSSETT

Questions about this item

Will the 792 Eliminator fit the existing 1-inch female inlet on my older hydronic boiler?

The 792 Eliminator has a female inlet port, so it threads onto a male pipe end; verify your boiler outlet is male and matches the same pipe size before installing.

How can I confirm the float vent is releasing air correctly once the system is pressurised?

Watch for a steady stream of air followed by water at the vent outlet; the float should then seat and stop flow, showing the 792 Eliminator is operating at up to 250 psi.

Does the box include pipe sealant or adapters, or must I buy them separately?

Only the cast-iron 792 Eliminator air vent is supplied; thread sealant, pipe nipples or any adapters required for your piping must be purchased separately.

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