PETRO

BOILERS; FURNACES; HOT WATER HEATERS; WINTER AIR CONDITIONERS; OIL BURNERS; OIL PREHEATERS, AND OIL BURNER ACCESSORIES WHICH ARE STRUCTURAL PARTS OF A BURNER UNIT-NAMELY, OIL STRAINERS, OIL BURNER NOZZLES, PILOT LIGHTERS, OIL METERING VALVES, OIL CIRCULATING VALVES, OIL PRESSURE REGULATING VALVES, MANUALLY OPERATED VALVES AND RELIEF VALVES