C437E1038 | Honeywell Gas/Air Pressure Limit Switch, 1/2–5-1/2 in. Water Column

Honeywell · Relays, Contactors & Switches

Description  The Honeywell C437E1038 is a gas/air pressure limit switch with an adjustable range from 1/2 to 5-1/2 inches water column. It provides reliable pressure monitoring and control for heating systems, offering both durability and ease of adjustment.     Technical Specifications  Condition New/Never Used Surplus Brand Honeywell Category Pressure Control Part Number C437E1038 Subcategory Gas/Air Pressure Switch Pressure Range 1/2–5-1/2 in. water column Switching Type SPST Temperature Range 32°F to 125°F (0°C to 52°C) Surge Compensation Yes, restrictive orifice Diaphragm Material Buna-N fiber-reinforced Cover Type Clear glass Visual Indication Mercury switch Main Pressure Connection 1/2 in. NPT female Vent/Low Pressure Connection 1/8 in. NPT female Application Gas and air pressure monitoring Weight 4.27 lbs   Information About C437E1038 The C437E1038 is part of Honeywell’s pressure switch line, designed for gas and air pressure sensing in heating and combustion systems. Suitable for SPST switching, it features a restrictive orifice to help compensate for momentary pressure surges, ensuring stable operation. The enclosed setting design prevents tampering and offers dust resistance, while the clear glass cover allows visual inspection of the internal mechanism during setup and maintenance. Its reinforced Buna-N fiber diaphragm increases durability, and the mercury switch provides a clear visual indication of switch position for quick status verification. Key Features: Adjustable pressure sensing range: Provides precise monitoring and control over pressures from 1/2 to 5-1/2 inches water column, allowing fine-tuning for different gas and air system requirements. Single-pole, single-throw switching: Designed for SPST operation, enabling straightforward integration into heating or combustion system safety circuits. Integrated surge compensation: Uses a restrictive orifice in the inlet pressure channel to dampen momentary spikes in gas pressure, maintaining consistent performance and avoiding nuisance trips. Manual reset capability for lockout models: Offers enhanced safety by requiring a manual reset after a lockout event, ensuring that faults are addressed before system restart. Protected adjustment mechanism: Enclosed setting design prevents unauthorized tampering and shields components from dust and debris, improving operational reliability. High-strength diaphragm construction: Buna-N fiber-reinforced diaphragm material provides superior resistance to wear, pressure cycling, and environmental stress for long service life. Visual inspection capability: Clear glass cover allows operators to observe the interior mechanism during setup, adjustment, and troubleshooting without disassembly. The C437E1038 delivers the reliability, safety, and precision required for effective gas and air pressure control in heating systems.

Brand: Honeywell · Category: Relays, Contactors & Switches

Key features

• Adjustable pressure sensing range: Provides precise monitoring and control over pressures from 1/2 to 5-1/2 inches water column, allowing fine-tuning for different gas and air system requirements.
• Single-pole, single-throw switching: Designed for SPST operation, enabling straightforward integration into heating or combustion system safety circuits.
• Integrated surge compensation: Uses a restrictive orifice in the inlet pressure channel to dampen momentary spikes in gas pressure, maintaining consistent performance and avoiding nuisance trips.
• Manual reset capability for lockout models: Offers enhanced safety by requiring a manual reset after a lockout event, ensuring that faults are addressed before system restart.
• Protected adjustment mechanism: Enclosed setting design prevents unauthorized tampering and shields components from dust and debris, improving operational reliability.
• High-strength diaphragm construction: Buna-N fiber-reinforced diaphragm material provides superior resistance to wear, pressure cycling, and environmental stress for long service life.
• Visual inspection capability: Clear glass cover allows operators to observe the interior mechanism during setup, adjustment, and troubleshooting without disassembly.

Specifications

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