Of instantaneous or storage water heaters
Part of: 841990 — Parts:
N356321 · 2025-12-10 — The tariff classification and country of origin of a pool heater component
The subject component, identified as part number 42001-0126, is described as a copper-finned tube that will be bent into a shape that resembles the Greek letter omega. It will be used in a gas-fired Pentair pool heater. Post-importation, several of these omega-shaped copper-finned tubes are installed inside the pool heater where they will surround a burner assembly. When the pool heater is in operation, cold water enters the inlet port, circulates through the omega shaped tubes, and exits through the outlet port. The water moving through the tube is heated directly by the burner assembly. The…
N347087 · 2025-04-02 — The tariff classification of an ultra low-NOx burner from Italy
The merchandise under consideration is referred to as an ultra low NOx burner, part number 100332776. The unit is sized and shaped for certain gas-fired storage water heaters sold by your company. While referred to as a “burner,” it is not a complete assembly but instead requires a pilot/thermopile assembly, thermocouples, sensors, and other components to form a burner door assembly, which is then inserted into the combustion chamber of the water heater. The ultra low NOx burner is described as an aluminized steel metal burner box with a top surface composed of metal wire mesh and woven…
N106035 · 2010-06-09 — The tariff classification of a solar water heater connection line from China.
A description and photos were included with your request. The article is a solar connection line of several components which goes by model numbers GDTWHT31620030, GDTWHT31625030, GDSIHT31620030 and GDSIHT3165030 depending upon size and single or double line configuration. Each line consists of an insulated, corrugated stainless steel pipe, insulated sensor wire and a polyolefin covering. The assembled component is shipped in 50 foot coils and cut to length as needed. The line is used to deliver heat transfer fluid between other components of a solar powered water heater and to connect sensors…
E88517 · 1999-10-19 — The tariff classification of stainless steel rings for instantaneous gas water heaters from China.
You submitted representative samples and descriptive literature with your request. These stainless steel rings, made of 304 stainless steel coil by a press machine, act as the heat transfer medium in instantaneous gas water heaters. Each ring measures approximately 2.5 inches in circumference by 1 inch in height, and weighs approximately 0.03 lbs. As hot combustion gases flow upward in the instantaneous gas water heater, the stainless steel rings are heated. Simultaneously, cold water flows downward through the heated stainless steel rings, heating up the rings. The heated water is then…
081376 · 1988-09-26 — Classification of blanked parts used with automotive radiator cooling fans
Specifications of the steel used and a photograph of the completed article were submitted. Our decision follows. FACTS: The articles in question are blanked out in a stamping press from hot rolled, pickled and oiled steel sheet in coils, conforming to SAE designation J-410, grade 950 A, B, or C. The resulting stampings are generally turtle-shaped. They are flat with a round middle and have five (5) protruding flanges. In a separate operation, three (3) screw holes are punched in each flange and a hole punched in the center. Some of the stampings are stress relieved prior to importation and…
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