A.J. Antunes 804112101 2-SPDT High & Low Gas Pressure Switch (RHLGP-A)

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