FAQs of Ferrule Adapter

1. What is the difference between a double ferrule joint and a single ferrule joint?

The single-ferrule joint is composed of only a single sealing ferrule, a joint body and a fastening component, and has a simple and compact structure, which not only has lower manufacturing cost, but also can effectively control the budget for the purchaser, and the installation can be completed by tightening the fastening component with a conventional wrench, and the ferrule can be quickly positioned and replaced separately when sealing problems occur;

In contrast, the double-ferrule joint adopts the structure of division and cooperation between the main and secondary ferrules. The main ferrule bears the fixed role, and the secondary ferrule strengthens the seal. Although the sealing performance and stability are better in the medium and high-pressure and corrosive medium scenarios, the cost is higher, and the installation accuracy is lower.

From HJ-GK FITTINGS (HJ-GLOBAL KOREA)

In the basic scenarios of low pressure, normal temperature and non-corrosive medium (such as civil water supply and drainage, small equipment cooling pipeline), the single-ferrule joint can not only achieve reliable sealing by virtue of elastic deformation of the ferrule, but also meet the needs with the advantages of high cost performance and easy operation, becoming the best choice for such scenarios.

2. Is there a difference between a Ferrule Adapter and a Compression Fitting?

There are essential differences between the Ferrule Adapter and the Compression Fitting, and the core differences are reflected in the definition category, structural design, and core function.

A ferrule adapter is mainly used to connect and change between different pipes. Its main job is to link pipes with different sizes or different thread types, such as connecting a pipe to a valve. In this case, the ferrule is only an extra sealing part. When the nut is tightened, the adapter body and the pipe do most of the work, and the ferrule just fills small gaps to help stop leaks.

A Compression Fitting is mainly used for sealing and holding the pipe in place. Here, the ferrule is the key working part. When the nut is tightened, the metal ferrule is pressed and slightly deformed. This helps it grip the pipe tightly and seal the gap at the same time. This type is often used to connect pipes of the same size, especially in places with higher pressure or higher safety needs.

Although both rely on mechanical force sealing, the ferrule joint focuses on “adapter adaptation” and the ferrule joint focuses on “sealing fixation”, and the functional positioning is completely different from the application scenario.

3. What is the rust-proof rating of stainless steel ferrule joints?

Plumberstar stainless steel ferrule joints follow common international rust-resistance standards. Most standard models are made from 304 stainless steel. Under the GB/T 10125-2021 salt spray test, they can pass 72 hours of neutral salt spray without rust. High-end models made from 316L stainless steel perform much better and can pass over 1000 hours of the same test without corrosion. Some special custom models can even meet the CASS copper-accelerated salt spray test for 200 hours. Because of this strong rust resistance, 316L ferrule joints are suitable for marine and seaside environments. While 304 stainless steel joints have excellent rust-proof performance, they are not recommended for long-term, strong salt spray marine environments, but are suitable for non-core load-bearing or short-term use of pipelines. For more than 5 years of stable use, 316L material models are preferred.

4. What are the interface types of the Ferrule Adapter?

Ferrule joints come with many interface types to fit different pipes and uses. Common types include threaded, socket, welding, quick plug, and reducing interfaces. Threaded types have female threads (such as NPT, BSP, G) and male threads, and they can be screwed directly onto pipes or valves with the same thread. The socket type lets the pipe slide straight into the joint, and the ferrule tightens to seal it, which works well with copper or plastic pipes. The welding type is usually brazed or welded and is used in high-pressure systems to make the connection stronger. The quick plug type uses a special ferrule so the pipe can be connected or removed by hand, making it good for places that need frequent disassembly. The reducing type has different sizes on each end, helping connect pipes of different diameters. We can also make custom interface types to meet special customer needs.

5. Does Plumberstar offer a matching solution for ferrules and pipes?

Plumberstar focuses on pipe system solutions and can supply matched ferrule joints and pipes as a complete set. We choose the right products based on the customer’s real needs, such as what flows inside the pipe, the working pressure, and the environment. The solutions cover common pipes like stainless steel pipes, copper pipes, and PPR plastic pipes, and match them with the correct ferrule joints. We also select the right joint types (threaded, socket, etc.) and include needed parts like seals and tightening tools. For special fields such as chemical plants, HVAC systems, and ships, we can offer custom solutions that meet industry standards. During matching, we provide installation data and compatibility test reports, so the whole pipe system connects firmly, works safely, and helps customers avoid mistakes from choosing parts on their own.

6. In which industries is Ferrule Adapter primarily used?

Ferrule Adapters are used in many different places. In the chemical industry, they connect pipes that carry acids or alkalis. In buildings and HVAC systems, they help connect main pipes and branch pipes for water supply and drainage. In ships and marine projects, models made of 316L stainless steel can resist salt air and are used in ship pipes and offshore water systems. In factories, they are used in air tool lines and hydraulic pipes. In the food industry, food-grade adapters are used for drinking water and food liquids. They are also used in farm irrigation for outdoor pipes and in medical equipment to carry fluids safely.

7. Does the Ferrule Adapter comply with ASME standards?

For the North American market, Plumberstar ferrule adapters are made to fully meet ASME standards. The products are produced according to ASME B16.11, which clearly defines rules for material quality, size accuracy, and pressure level of forged pipe fittings.

For example, carbon steel ferrule adapters follow ASME A105, and stainless steel models follow ASME A403. Different applications also match the ASME B31 piping codes. Before delivery, all ferrule adapters go through checks such as size inspection and pressure testing to make sure they meet the rules.

For special customer needs, some models can also meet extra ASME requirements. This helps the products enter the North American market smoothly and work well with local pipe systems.

8. Can you handle large-volume orders for stainless steel ferrule adapters?

We can easily handle large orders of stainless steel ferrule adapters. We will arrange the right production lines and make a clear production plan based on the customer’s real needs. Whether it is a big order of standard products or a batch of custom sizes, we can keep stable quality and deliver on time.

For large orders, we make a special production schedule and control quality at every step, from buying raw materials and machining to checking, packing, and shipping. We also support split deliveries, so customers can receive goods in batches that match their storage and use plans. Large orders can enjoy better step-by-step prices, and details like price, MOQ, and delivery time can be discussed according to the order size and product type.

9. Are bulk price advantages available for ferrule adapters?

We give discounts based on how many ferrule adapters you order. The final price depends on the order quantity, product size, and how long we work together. For large orders, we use step pricing, which means the more you buy, the lower the price for each piece. For big orders with custom sizes, we first confirm the drawings and production needs, then calculate a fair discounted price based on real production costs. Customers who work with us for a long time can also get extra discounts and faster production arrangements. If you want to know the exact discount plan, you can contact our sales team to discuss the details.