INSTRUMENTATION FITTINGS
 
Type Of Fittings
Double Ferrule
Single Ferrule
 
Technical Specifications
There Are No Standard Specifications Available For Type Test Requirements Of Double Ferrule Compression Fittings. Generally Adopted Standard For These Type Of Fittings Are That Of Single Ferrule Fittings I.E. Bs 4368: Part Iv (British Standards).
 
The Tests Specified By These Standards Are As Follows.
• Visual Examination
• Pneumatic Pressure Tests
• Dismantling & Reassembly Tests
• Hydraulic Burst Pressure Tests
• Temperature Cycle Tests
• Hydraulic Impulse Vibration Tests Features
 
Features
• Self Aligning
• Works On Thick & Thin Wall Tubings
• Resists Vibration & Temperature
• Works On Any Tube Materials
• Works On Vacuum As Well As High And Low Pressures
• Resistance To Pressure Up To The Lowest Point With Tubings And Without   Leakage
 
 
Thread Specifications
Most Popular Thread Connections Are American National Pipe Thread (NPT), British Standard Pipe Threads (BSP) And Metric Threads.
 
Material Of Construction (Moc) For Fittings
304/316 Stainless Steel, Brass, Carbon Steel (Cs), Monel, Titanium.
 
Size : 1/16” OD To 1" OD & 4mm OD To 25mm OD.
 
Rating : The Maximum Pressure Rating For Fitting Are Subjected To The Tube Withstanding The Pressure Mentioned Therein.
Brass Fitting Tested 150 Psi. S.S Fittings Tested 5000 Psi Hydraulically. C.S. Fittings Tested 4000 Psi Hydraulically.
 
Tubing Selection/Specification For Fittings.
Copper Tubings : Annealed, Soft, Seamless Copper Tubings To ASTM B68, B75 Or B88.
Hardness Of Tubes Not To Exceed RB 60.
Stainless Steel Tubings : Annealed 304 Or 316 Tubings To Astm A269 Or A213.
Hardness Of Tubes Not To Exceed Rb 80
Carbon Steel Tubings : Fully Annealed Carbon Steel Hydraulic Tubings To Astm A179, Din 2391 Or Equivalent.
Recommended Hardness To Be Rb72 Or Less.
Monel 400 Tubings : Fully Annealed Monel 400 Seamless Tubings Confirming To Astm B165 Or Equivalent.
Recommended Hardness To Be Rb 75 Or Less.
 
Tubings Should Be Suitable For Bending, Flaring And Should Be Free From Surface Defects.
VSM Manufactures Complete Range Of Instrumentation Ferrule Fittings. Most Popular & Commonly Used Sizes And MOC Has Been Mentioned Above, However VSM Can Also Manufacture Special Sizes/Specifications As Per Clients Requirements/Drawings.
 
 
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