FAQs of Ferrule Adapter

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

Double-ferrule joint and single-ferrule joint belong to the ferrule joint category, but there are significant differences in structure, performance, and application scenarios, among which the advantages of the single-ferrule joint are particularly prominent.

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 an essential difference between a Ferrule Adapter and a Compression Fitting?

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

The core attribute of ferrule joint is “pipeline adapter”, with the joint body with adapter function as the core, and the ferrule is only used as an auxiliary sealing component, mainly used to realize the transition connection of different diameter and different interface pipelines, such as connecting pipes of various specifications with valves, and its sealing force comes from the extrusion of the fastening component to the main body and the pipeline, and the ferrule only fills the gap to enhance the sealing performance;

The core attribute of the ferrule joint is the “sealing connector”, with the ferrule as the core working part. The metal ferrule is extruded by the nut, deforming it, and at the same time, the dual effect of holding the pipeline and sealing the gap is achieved. It is mainly used for high-reliability connections of pipelines of the same specification, especially for high-pressure scenarios.

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 ring joint rust class strictly comply with international general standards, mainstream models using 304 stainless steel material rust class in line with GB/T 10125-2021 “artificial atmosphere corrosion test salt spray test” in the NSS neutral salt spray test 72 hours without corrosion standards, using 316L stainless steel high-end models can reach the NSS neutral salt spray test more than 1000 hours without corrosion standards, Some special customized models can even meet the stringent requirements of CASS copper accelerated salt spray test for 200 hours; based on this rust-proof performance, 316L stainless steel ferrule joints can be fully used in marine environments, while 304 stainless steel joints have excellent rust-proof performance, but in long-term strong salt spray marine environments, it is recommended 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?

The interface types of ferrule joints include threaded interfaces, socket interfaces, welding interfaces, quick plug interfaces and reducing interfaces, among which threaded interfaces are divided into internal threads.(such as NPT internal thread, BSP internal thread, G internal thread and other international common specifications) and external thread (NPT outer thread, BSP outer thread, etc.), which can directly connect pipes or valves with corresponding threads; socket interface allows pipes to be directly inserted into joint socket, sealing through ferrule, adapting common pipes such as copper pipe and plastic pipe; welding interface is mostly designed for brazing or fusion welding, which is used in high pressure scenarios to enhance connection stability; quick plug interface with special ferrule can realize tool-free quick plug and unplug, suitable for frequent disassembly conditions; Reducing interface is different specifications at both ends of the same joint, which is specially designed to solve the transition connection problem of reducing pipeline. At the same time, we can also customize the non-standard interface type according to the special needs of customers.

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

Plumberstar, as a brand focused on pipe system solutions, clearly provides a complete package of ferrule joints and pipes, which will be based on customer-specific conditions. (such as transmission medium, working pressure, environmental conditions, etc.), to achieve accurate adaptation of ferrule joints and pipelines, not only covers the combination of mainstream pipeline types such as stainless steel pipes, copper pipes, PPR plastic pipes and ferrule joints of corresponding specifications, but also combines the joint interface types (such as threads, sockets, etc.) with the pipeline connection requirements to match auxiliary accessories such as seals and fastening tools. At the same time, for special industry scenarios such as the chemical industry, HVAC, and ships, it can provide customized matching solutions in line with industry standards. During the matching process, the installation parameters and compatibility test reports of joints and pipelines will be output synchronously to ensure that the whole pipeline system is firmly connected and reliably operated, reducing the adaptation risks that may occur when customers match themselves.

6. In which industries is Ferrule Adapter primarily used?

Ferrule Adapter is widely used in chemical industry, mainly used for pipeline connection of corrosive medium such as acid and alkali, building water supply and drainage and HVAC industry, such as adapting main and auxiliary pipeline turning and branch connection, ship and marine engineering, such as 316L material model can withstand salt spray corrosion, used for ship pipeline and marine platform water supply system, industrial manufacturing field, such as pneumatic tool assembly line, pipeline connection of hydraulic system, food processing industry, For example, food grade materials are used for drinking water and food fluid transmission pipelines, and they are also used in agricultural irrigation, such as outdoor weather resistance pipeline connections and medical equipment fluid pipelines.

7. Does the Ferrule Adapter comply with ASME standards for the North American market?

For the North American market, the Ferrule Adapter supplied by Plumberstar fully conforms to ASME-related standards, and the core is manufactured in accordance with the ASME B16.11 standard for forged pipe fittings. This standard provides clear specifications for key indicators, including material performance, size accuracy, and pressure rating of ferrule joints. For example, carbon steel joints shall conform to the material requirements of ASME A105, stainless steel joints shall comply with the ASME A403 standard, and the ASME B31 series pipe codes shall be adapted according to different application scenarios. All ferrule fittings for the North American market have passed compliance verification, such as size inspection and pressure test. Some special models can also meet ASME-related supplementary standards, as required by customers, ensuring a smooth entry into the North American market and adaptation to local piping systems.

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

We are fully capable of handling large-volume orders for stainless steel ferrule adapters. We can allocate corresponding production lines and formulate capacity plans tailored to customers’ actual requirements. Whether it is the large-scale mass production of regular standard models or the batch production of customized specifications, we can stably guarantee product quality and delivery schedules.

For large-volume orders, we will provide exclusive production scheduling plans, with strict quality control implemented throughout the entire process—from raw material procurement, precision machining, and quality inspection to packaging and delivery. Meanwhile, we support flexible batch delivery services to meet customers’ warehousing and usage rhythm needs. In addition, large-volume orders are eligible for tiered price discounts. The specific quotation, minimum order quantity, and delivery time can be further negotiated based on the order specifications and quantity.

9. Are bulk price advantages available for ferrule adapters?

We offer volume-based pricing discounts for our ferrule adapter products, with the discount level flexibly adjusted based on the specific order quantity, specifications, and cooperation cycle. For large-volume orders, tiered pricing will be applied to grant corresponding discounts—the higher the purchase volume, the more significant the unit price advantage. As for bulk orders of customized specifications, we will calculate a competitive discounted quote based on the actual production costs after confirming the specific technical parameters and production requirements. Additionally, long-term cooperative customers are entitled to extra preferential benefits and priority scheduling of production services. For detailed preferential schemes, please feel free to contact our sales team for further confirmation.