Normally where do we use the following? A. Eccentric reducers B. Concentric reducers Answer: A. Eccentric reducers = Pump suction to avoid Cavitation, To maintain elevation (BOP) in rack. B. Concentric reducers = Pump discharge, vertical pipeline etc.
What is the basis of using of short radius & long radius elbow? Answer: Long radius elbow are used for small pressure drop whereas short radius elbow are used for high pressure drops. For catalyst flows vary long radius elbows are used. Short radius elbows are used in jacketted piping,usually in small bore.
What should be the radius of short radius elbow? Answer: 1D(Where “D” is the diameter of the pipe.)
What should be the radius of long radius elbow? Answer: 1.5D (Where “D” is the diameter of the pipe.)
How the pipe fittings are classified based on end connections? Answer: Pipe fittings are classified based on end connection as: – A. Socket weld fittings. B. Screwed end fittings. C. Beveled end or Butt weld fittings. D. Spigot socket fittings.
What are Weldolet and Sockolet? And where they are used? Answer: Weldolet and Sockolet are basically self-reinforced fittings.Weldolet is used for Butt weld branch connection where standard tee is not available due to size restrictions and the piping is of critical / high-pressure service. Sockolet is used for socket welding branch connection, which require reinforcing […]
What are the commonly used ASTM CAST FITTINGS ? Answer: I. Carbon Steel :- ASTM A216, ASTM A352 LCB/C. II. Alloy Steel :- ASTM A217 WC1/WC6/WC9/C5/C12. III. Stainless Steel :- ASTM A217 CA15, ASTM A296 CA15, ASTM A351 CF8/CF3/CH20/CK20/CF 8M/CF 3M/CF 8C/HK40.
What are the commonly used ASTM FORGED FITTINGS ? Answer: I. Carbon Steel :- ASTM A181. ASTM A105, ASTM A350 LF1/2. II. Alloy Steel :- ASTM A182 F1/F2/F5/F7/F9/F11/F12/F22. III. Stainless Steel :- ASTM A182 F6/F304/F304L/F304H/F310/F316/F316L/F316H/F321/F321H/F347/F347H/F348.
If you’ve ever had to replace the U-turn or “trap” under the bathroom sink, build your own sprinkler system, or perhaps run water and gas lines to install a washer and dryer, chances are you already know all about pipe fittings. Pipelines, whether steel, copper, plastic Acrylonitrile Butadiene Styrene (ABS), or Chlorinated Polyvinyl Chloride (CPVC) […]