What is MS Fittings？
The full name of MS can be Metal Sheath or Male Thread. MS Fittings is a key component in industrial piping systems. It is used to connect metal hoses to other pipes or equipment to ensure sealing, improve compressive resistance at the connection, and ensure safe and stable fluid delivery. There are also many types of MS Fittings, such as MS Threaded Fittings, MS Compression Fittings, etc.
Composition of MS Fittings
It mainly consists of three parts: bellows, mesh sleeve and joint.
The inner layer of the corrugated pipe is thin-walled stainless steel corrugated pipe, which may also be spiral or annular, mainly to provide flexibility to resist fatigue.
The mesh cover is made of stainless steel wire or steel strips to enhance pressure resistance and mechanical strength.
Common types of joints include outer wire termination type, clamp type, self-fixed type, etc., and both ends are flanges, threads or clamp structures for connection with pipes.
Material comparison
|
Material |
Features |
Applicable scenarios |
|
Carbon steel |
Low cost, but poor corrosion resistance |
Conventional industrial environment |
|
304 stainless steel |
Strong corrosion resistance, complies with ASTM A182 standard |
Medium corrosive environments such as marine and chemical industries |
|
316 stainless steel |
Higher resistance to chloride ion corrosion, and its life is 30% higher than that of nickel-plated carbon steel |
Severe corrosive environment (such as marine engineering) |
|
Copper nickel/zinc alloy |
Low cost, suitable for non-corrosive environments |
Civil shower, low pressure scene |
MS Fittings Product Type
Threaded pipe joint: The pipe is sealed by threaded engagement connection. The most commonly used is MS336 (direct plug-in, tapered thread design).
Ballmount connector: After insertion, you only need to rotate 30 degrees to complete the locking, such as MS3116F12-10S (bayside locking, soldering socket).
Luer connector: It is a precision threaded connection, suitable for disposable medical equipment, such as blood pressure meter connectors, and intravenous infusion three-way valves.
Adapter and transition joint: Different standard interface conversions, such as BSPT to BSPT pipe thread transition joints.
Application areas
Medical industry: blood pressure gauge cuffs, diagnostic equipment, laboratory instruments, leakage-free and sterile connections are required.
Industry and manufacturing: hydraulic systems, chemical treatments, printing equipment, etc., such as Fittings Unlimited stainless steel adapters for industrial control.
Aerospace and Military: Fluid transmission in high reliability environments, such as the MIL-DTL-26482 standard circular connector
Electronics and food processing: liquid cooling, food processing pipelines.
FAQs
1.What to do if a leak occurs in MS Fittings?
First check whether the sealing surface is worn or blocked by foreign objects. If necessary, replace the seal or retighten the joints. If the problem persists, it is recommended to replace the entire connector.
2.How long does MS Fittings last?
Lifespan depends on the use environment and maintenance conditions, and can reach 5-10 years under conventional conditions. Regular inspections can extend service life.
3.What should I pay attention to when installing?
Check that the seal ring is intact;
Avoid over-tightening to cause damage to threads;
Pressure tests are required after installation to prevent leakage.
