1966 Orr & Sembower 350 HP 3‑pass firetube natural‑gas boiler

Specs Year: 1966 Make: Orr & Sembower Model: 3HGBoiler Type: Firetube (three‑pass design, packaged) Power: 350 HP Capacity: 11,716,250 BTU/hrMax Working Pressure: 15 psi Heating Surface: 1,750 sq ft Gas Consumption Rate: 13,825 cu ft/hr Voltage – Motors: 208 V, 3‑phaseVoltage – Controls: 120 V, 1‑phase

All specifications are assumed to be correct but must be confirmed by the purchasing entity.,Installed Options Natural gas burner assembly Electric motor drive system Inline safety and pressure instrumentation Exhaust stack support structure

All specifications are assumed to be correct but must be confirmed by the purchasing entity.,Feature Spotlight Three‑pass firetube construction optimizes fuel-to-steam efficiency• Large 1,750 sq ft heating surface accommodates high steam volume Fitted with industrial burner for natural gas operation Electric configuration with dual-voltage control and motor support Visible gauge and control interface for real-time pressure monitoring

All specifications are assumed to be correct but must be confirmed by the purchasing entity.,Machine Overview

All specifications are assumed to be correct but must be confirmed by the purchasing entity.,This Orr & Sembower 3HG boiler is a 350 horsepower, three-pass packaged firetube boiler built in 1966 and designed for natural gas fuel. It features a firing capacity of 11.7 million BTU/hr, a 15 PSI maximum working pressure, and a 1,750 sq ft heating surface. The burner system consumes 13,825 cu ft/hr of gas and is powered by a 208 V, 3‑phase motor, with controls operating at 120 V, 1‑phase. The boiler includes key safety features such as integrated gauges and exhaust stack support. Condition appears operational, and external wear is consistent with industrial use.

All specifications are assumed to be correct but must be confirmed by the purchasing entity.