Description
Overview
The A.J. Antunes 804112101 (RHLGP-A) is a dual-function, auto-reset high and low gas pressure switch engineered for reliable gas pressure monitoring in commercial HVAC and foodservice heating applications. With independent high and low pressure sensing in a single compact unit, this switch simplifies installation while delivering precise protection against unsafe gas pressure conditions.
Key Features
- High pressure range: 2–16″ w.c. (water column)
- Low pressure range: 1–6″ w.c. (water column)
- Auto-reset operation — automatically resets when pressure returns to safe range
- Dual 2-SPDT (Single Pole Double Throw) switching outputs for high and low pressure circuits
- High pressure connection: 3/8″ NPT
- Low pressure connection: 1/8″ NPT
- Vent port: 1/8″ NPT
Connections & Configuration
- 3/8″ NPT high pressure port for secure gas line connection
- 1/8″ NPT low pressure port for downstream sensing
- 1/8″ NPT vent connection for safe pressure relief routing
- Compact, single-body design houses both high and low pressure switches
Application
Designed for use in commercial gas-fired equipment where both high and low gas pressure conditions must be monitored simultaneously. The auto-reset feature reduces service calls by restoring normal operation automatically once safe pressure levels are re-established. Ideal for replacement or OEM use in A.J. Antunes equipment and compatible gas appliance systems.
Specifications
- SKU / Part Number: 804112101
- Model: RHLGP-A
- Switch Type: 2-SPDT (High and Low)
- High Pressure Range: 2–16″ w.c.
- Low Pressure Range: 1–6″ w.c.
- Reset Type: Auto Reset
- High Pressure Connection: 3/8″ NPT
- Low Pressure Connection: 1/8″ NPT
- Vent Connection: 1/8″ NPT
- Brand: A.J. Antunes







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