Description
Mars 43330 Diaphragm Gas Valve Overview
The Mars 43330 is a heavy-duty diaphragm gas valve engineered for reliable gas flow control in commercial and residential heating applications. With a 1-1/4″ pipe connection and a generous 2100 CFH flow capacity, this valve is well-suited for high-demand burner systems. Operating on a standard 24VAC control signal, it integrates seamlessly with virtually any conventional HVAC control circuit.
Key Specifications
- Pipe Size: 1-1/4″
- Flow Capacity: 2100 CFH
- Inlet Pressure: 1 PSI maximum
- Control Voltage: 24VAC
- Flow Configuration: Straight Through
- Lead Wires: 6″ leadwires for easy field connection
- Pilot Tapping: 1/8″-27 NPT
- Bleed Tapping: 1/8″-27 NPT
- Mounting Orientation: Upright or Horizontal
- Maximum Valve Opening Time: 5 seconds
- Maximum Valve Closing Time: 2 seconds
Features & Benefits
- Diaphragm-type construction for dependable, consistent gas flow regulation
- Straight-through flow path minimizes pressure drop across the valve
- Dual 1/8″-27 NPT tappings for pilot and bleed connections offer flexible field installation
- Upright and horizontal mounting compatibility simplifies retrofit and new installation scenarios
- 6″ leadwires provide convenient wiring access in tight equipment cabinets
- Fast 5-second maximum opening and 2-second maximum closing response for safe, efficient burner sequencing
- 24VAC coil voltage is compatible with standard HVAC control transformers
Typical Applications
- Commercial and residential gas-fired heating equipment
- Boilers, furnaces, and unit heaters requiring high-capacity gas valves
- Replacement or retrofit of existing diaphragm-type gas valves
- Systems requiring pilot and bleed port access for pressure testing or pilot gas supply
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