What Should Users Know About the Size Information of Threaded Bronze Fittings?

Threaded Bronze Fittings are commonly produced in nominal pipe sizes (NPS), which are standardized in inches. These sizes generally range from 1/8 inch up to 4 inches, though custom sizes may be available for specific applications. The frequently used sizes include 1/2", 3/4", 1", and 1-1/2", which suit household and commercial plumbing needs.

Each fitting is identified by its nominal size, which refers to the internal diameter (ID) of the pipe it is designed to connect to—not the external dimensions of the fitting itself. As manufacturers, we follow industry standards such as ASME B1.20.1 for pipe threads and ASTM B62 or B584 for bronze casting materials, ensuring consistency across all Threaded Bronze Fittings produced.

The majority of Threaded Bronze Fittings use National Pipe Thread (NPT) standards, which are tapered threads that provide a tight, leak-resistant seal when correctly assembled. Tapered threads require sealing compounds or PTFE tape to ensure a watertight connection.

For international or marine applications, other thread types such as BSP (British Standard Pipe) or ISO threads may be requested. As a manufacturer, we often produce Threaded Bronze Fittings with different thread types based on market demands, and it's essential that end users verify thread compatibility before installation.

We manufacture Threaded Bronze Fittings in a variety of shapes and configurations to suit different connection needs. These include:

Elbows (usually 90° or 45°): Available from 1/4" to 2"

Tees: Commonly produced in 1/2" to 2"

Couplings: Ranging from 1/8" to 3"

Adapters (male or female): From 1/4" up to 4"

Bushings and Reducers: Designed to transition between two different sizes

Each of these fitting types has internal or external threads designed to match standard pipe threads. Proper size selection ensures that Threaded Bronze Fittings will fit correctly and perform as expected under various pressure and temperature conditions.

To assist with correct selection, Threaded Bronze Fittings are clearly marked with size and thread type. These markings are either cast into the body or engraved depending on the production method. We ensure that each fitting carries legible markings so that users can quickly confirm sizing before or during installation.

When multiple sizes are involved in one fitting (such as a reducing tee), all relevant sizes are marked clearly. For example, a 1" x 1/2" x 1" reducing tee will be labeled accordingly to indicate which branches have which thread sizes.

While standard sizes cover the majority of needs, there are situations where custom Threaded Bronze Fittings are required. In these cases, we offer custom manufacturing services based on provided specifications or drawings. Custom work often involves special thread types, uncommon diameters, or unique configurations tailored for niche industries or legacy systems.

For non-standard sizes, tolerances and thread depth become particularly important. Our manufacturing team uses precision machining equipment to ensure these fittings still meet tight quality control standards.

From a practical standpoint, ensuring the correct size of Threaded Bronze Fittings during the planning stage is essential for a successful installation. Misidentifying thread size can leaks, thread damage, or mismatched components. Therefore, we always advise users to consult fitting size charts or use thread gauges when uncertain.

During installation, it's also important not to overtighten Threaded Bronze Fittings, as doing so may strip the threads or crack connected components. Proper torque guidance is included in our product documentation for common sizes to help prevent such issues.