Hydraulic Fittings & Adapters

Manufacturer Since 2011

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What are Differences between JIC, NPT, BSPP and BSPT

The top process in the converting industry uses different sealing techniques, depending on the geographic area, the size of the top process and the environment. There are regional differences in the type of sealant and industry preferences. For example, many high-pressure vessels on the ship use BSPP adapters while many applications in the oil and gas industry use NPT fittings. No sealing style is inherently better than another, but each style has its own application.

What is JIC Fitting?

JIC (or Joint Venture Industry) fittings, as defined by SAE J514, are compression fittings machined with a parallel thread with a 37 degree flared seat surface. They are usually made of alloys of nickel, brass, carbon, and stainless steel.

JIC hydraulic fittings are available in most liquid supply systems. The products for men and women have 37-degree seats. The joint is formed by making contact between a male flare table and a female taper table. This is considered to be a combination of systems. There are three components in a tube assembly. Fittings, quick flare, and sleeve.

Advantages of using JIC fittings

they are easy to use
Available in a variety of sizes, shapes, connections, and accessories
Matching size SAE fittings for easy replacement and identification.
The absence of O-rings makes it suitable for high-temperature applications.

Disconnection and reconnection can be repeated without distortion.
(Very important in applications where tools are frequently changed or modified, and easy to maintain and install. In addition, a combination of male JIC fittings and female JIC swivels makes it easier to guide.)

Disadvantages of using JIC fittings

Sometimes they have a lower threshold than desired (high vibration consumption).
The metal-to-metal seal design is limited to hydraulic, fluid, and non-hydraulic applications
Easy to flare damaged and broken by over-tightening flared cut

Flare fittings have an important design and function compared to pipe fittings and can be used with thin to medium walls. In most hydraulic design applications, pipe fittings have long been replaced by flare fittings, particularly in military and aerospace equipment. The most common type of connection for low and medium pressure applications is flare fitting.

The SAE 37 ° single torch is standard for most hydraulic systems. SAE standards for maximum tube wall thickness must be followed before the transmission tube matches the fitting connection. JIC fittings can be easily confused with SAE 45 degree flare fittings. Some sizes have similar threads, so measure your chair carefully to make it different.

What is NPT Fitting?

National Pipe Thread (NPT) gaskets are the most widely used material for pressure gauges in the United States and Canada. Male NPT adapters have a tapered thread that fits into a female NPT adapter. They are imprisoned because of the “roundness rule”, in which the man stretches the woman until the connection is applied with sufficient force to hold the heart.

One problem with this design is that poor stainless steel connections can cause ripple and damage to wires that are too tight or poorly lubricated. Sealants should be used for sealing, but sealants should only be applied twice. Using more than this will cause the seal to leak around the sealant thread.


What is BSPT Fitting?

BSPT (British Standard Pipe Taper) is similar to NPT, except that there are significant differences. The angle between the sides of the nail (if you cut the fitting in half lengthwise and measure the angle from base to floor to base) is 55 degrees, not 60 degrees as in the case of the NPT.

Another important difference is that for different sizes of BSPT pipes, the NPT threads are different. So NPT males sometimes fit BSPT fittings and repeaters, but they do not close. This is a popular adjustment in China and Japan, but rarely used in North America unless the adjustment tool is shipped. The thread sealant must be able to join the male and female fittings.


BSPT fittings and adapters

For tapered threads, the connection is usually closed with a metal-to-metal thread shim. However, the seals are designed with o-rings or a bond.

British Standard Pipe Tapered (BSPT) fittings and adapters are generally intended to be mounted on a “face” surface of the workpiece, providing a smooth, flat, and precisely positioned surface during roughcasting. These fittings provide the best seal when assembled with lubricant or sealant to form a single seal.

What is BSPP Fitting?

The British Standard Parallel Pipe (BSPP) is most popular in the UK, Europe, Asia, Australia, New Zealand and South Africa. Parallel thread fittings with glued sealing rings for sealing. This mated ring seal is pressed over the shoulder of the male fit and the face of the female fit and pressed into place.

The BSPP pressure gauge consists of a longer shaft and uses a copper crusher that presses on the bottom of the male fitting and the bottom of the BSPP female hole to create a seal. No thread sealant is required to create the seal. Ralston Instruments offers male BSPP adapters, female BSPP adapters, female BSPP gauge adapters, and female BSPP quick disconnect gauge adapters.


BSPP Parallel Thread Fittings and Adapters

British Standard Pipe (BSPP) parallel thread fittings and adapters are the most popular products in the UK, Europe, Asia, Australia, New Zealand and South Africa markets. The popularity of these nails is not only due to the original wire pattern, but also their excellent sealing properties and ease of installation.

Usually seen at the end of the hose, adapters or ports are fitted with an o-ring or retaining ring. These wire connections are closed using ring connections. This seal ring is pressed between the shoulders and the female face of the male fitting to create a secure seal.

BSPP gauges also have a longer male thread and form a pressure seal using a copper crush washer that presses against the bottom of the male fitting and the bottom of the female BSPP borehole. The performance of BSPP threaded joints means that no thread sealant is required to make a good connection.