Description : What are the types of compressor shelters?
Last Answer : Answer: On ground with no shelter, Open sided structure with a roof, Curtain wall structure (Temperate climates), Open elevated installation, Elevated multi-compressor structure.
Description : What points to be considered for reciprocating compressor piping layout?
Last Answer : Answer: High pulsation, simple line as low to grade as possible for supporting, analog study, all branches close to line support and on top, Isolate line support from adjacent compressor or building foundations
Description : What are necessary parts of inlet line of compressor?
Last Answer : Answer: Block Valve, Strainer, Break out flanges in both inlet and outlet to remove casing covers, Straightening vane in inlet line if not enough straight piece in inlet line available, PSV in interstage line and in discharge line before block valve.
Description : What are the types of compressor cases?
Last Answer : Answer: Horizontal split case, Vertical split case.
Description : What are the compressor housing design points?
Last Answer : Answer: Floor elevation, building width, building elevation, hook centerline elevation.
Description : What factors to be considered while designing compressor housing?
Last Answer : Answer: Operation, Maintenance, Climate conditions, Safety, Economics.
Description : What are types of compressor drives?
Last Answer : Answer: Electric motor, gas turbine, steam turbine and gas engine.
Description : function of equipment’s used in sub-stations : (i) Earth Switch (ii) Relay (iii) Lighting Arrester (iv) Auxiliary transformer
Last Answer : (i) Earth Switch It's function is to discharge the ground capacitance when line is open circuited for maintenance purpose by isolator.) Earthing switch is inter - locked with isolator from the safety point ... 3-ph, 4wire, 400V) to give supply to control room, area lighting, staff quarters etc,
Description : Chemical engineering plant cost index is used for finding the present cost of a particular chemical plant, if the cost of similar plant at some time in the past is known. The present cost of ... (B) Process instruments and control (C) Pumps and compressor (D) Electrical equipments and material
Last Answer : (A) Fabricated equipment and machinery
Description : What are the types of bonnets?
Last Answer : Answer: Bolted bonnet, bellow sealed bonnet, screwed on bonnet, union bonnets, A U-bolt and clamp type bonnet, breech-lock bonnet, pressure seal bonnet
Description : What are types of gate valves?
Last Answer : Answer: Solid plane wedge, solid flexible wedge, split wedge, double disc parallels seats, double disc wedge, single disc single seat gate or slide, single disc parallel seats, plug gate valve.
Description : What is lantern ring?
Last Answer : Answer: It’s a collection point to drain off any hazardous seepage or as a point where lubricant can be injected; it is in the middle of packing rings.
Description : How to close a gate valve?
Last Answer : Answer: Turn the hand-wheel in clockwise direction.
Description : What are port types for gate valves?
Last Answer : Answer: Full port and reduced port. Default is reduced bore. Full port has to be specified in bom.
Description : What is double disc globe valve?
Last Answer : Answer: Has two discs bearing on separate seats spaced apart, on a single shaft, for low torque, used for control valves.
Description : Where WYE body globe valve is used?
Last Answer : Answer: In line ports with stem emerging at 45 degree, for erosive fluids due to smoother flow pattern.
Description : Where plug type disc globe valve is used?
Last Answer : Answer: For severe regulating service with gritty liquids such as boiler feedwater and for blow off service.
Description : What are types of globe valve?
Last Answer : Answer: Angle globe valve, plug type disc globe valve, WYE-body globe valve, composite disc globe valve, double disc globe valve.
Description : What are characteristics of globe valve stem?
Last Answer : Answer: Always rising design, with disk nut at the lower end and handwheel at upper end.
Description : What are globe valve disk types?
Last Answer : Answer: Flat faced type for positive shutoff, loose plug type for plug renewal or needle type for finer control.
Description : What are globe valve port types?
Last Answer : Answer: Full port: More than 85% of bore size, Reducer port: One size less than the connected pipe.
Description : How to install a globe valve?
Last Answer : Answer: Globe valve should be installed such that the flow is from the underside of the disk, Usually flow direction is marked on the globe valve.
Description : What is needle valve?
Last Answer : Answer: Full pyramid disc, same design as globe valve, smaller sizes, sw or threaded, flow control, disc can be integral with stem, inside screw, borged or barstock body and bonnet, manufacturers standard.
Description : What is pinch valve?
Last Answer : Answer: Similar to diaphragm valve, with sleeves of rubber or PTFE, which get squeezed to control or stop the flow, Cast iron body, for very low service pressures like isolation of hose connections, manufacture standard.
Description : What is dimensional standard for plug valve?
Last Answer : Answer: API 599.
Description : What are eccentric plug valve?
Last Answer : Answer: Off center plug, corrosive and abrasive service, on off action, moves into and away from seat eliminating abrasive wear.
Description : What are permasil plug valve?
Last Answer : Answer: Plug valves with Teflon seat instead of sleeves, for on-off applications, can handle clean viscous and corrosive liquids, Graphite seat for high temperature applications. Drip tight shut off not possible.
Description : What are Teflon sleeved plug valve?
Last Answer : Answer: PTFE sleeve between plug and body of valve, low turning effort, minimum friction, temperature limitation, anti static design possible.
Description : What is pressure balanced plug valve?
Last Answer : Answer: With holes in port top and bottom connecting two chambers on top and bottom of plug, to reduce turning effort.
Description : What are inverted plug design valve?
Last Answer : Answer: Plug valve with taper portion up of plug. For 8” and higher size.
Description : What are ventury pattern plug valve?
Last Answer : Answer: Change of section through the body throat so graded to have ventury effect, minimum pressure loss.
Description : What are short pattern plug valve?
Last Answer : Answer: Valves with face to face dimension of gate valve, as a alternative to gate valve.
Description : What is regular pattern plug valve?
Last Answer : Answer: Rectangular port, area almost equal to pipe bore, smooth transition from round body to rectangular port, for minimum pressure loss.
Description : What are three patterns of plug valve design?
Last Answer : Answer: Regular pattern, short pattern and ventury pattern.
Description : What is metal seated lubricated plug valve?
Last Answer : Answer: A plug valve with no plastic material, where grease is applied to contacting surfaces for easy operation.
Description : What are uses of four way valve?
Last Answer : Answer: Reversal of pump suction and delivery, By pass of strainer or meter, reversal of flow through filter, heat exchanger or dryer.
Description : What are the uses of three-way valve?
Last Answer : Answer: Alternate connection of the two supply lines to a common delivery vise versa, isolating one safety valve, division of flow with isolation facility.
Description : What are types of flush bottom valves?
Last Answer : Answer: Valves with discs opening into the tank and valves with disks into the valve.
Description : What are flush bottom valves?
Last Answer : Answer: Special type of valves used to drain out the piping, reactors and vessels, attached on pad type nozzles.
Description : What is float valve?
Last Answer : Answer: Used to control liquid level in tanks, operated by float, which rises with liquid level and opens the valve to control water level. It can also remove air from system, in which case, air flows ... valve, float inside valve raises to close the valve and stop flow of water. Used in drip legs.
Description : What is foot valve?
Last Answer : Answer: Valve used to maintain a head of water on the suction side of sump pump, basically a lift check valve with integrated strainer.
Description : What is safety valve?
Last Answer : Answer: Rapid opening (popping action) full flow valve for air and other gases.
Description : What is relief valve?
Last Answer : Answer: Valve to relieve excess pressure in liquids in situations where full flow discharge is not required, when release of small volume of liquid would rapidly lower pressure.
Description : What are blow off valve?
Last Answer : Answer: It is a variety of globe valve confirming with boiler code requirements and specially designed for boiler blowoff service. WYE pattern and angle type, used to remove air and other gases from boilers etc.
Description : What is sampling valve?
Last Answer : Answer: Usually of needle or globe pattern, placed in branch line for the purpose of drawing all samples of process material through the branch.
Description : What is diverting valve?
Last Answer : Answer: This valve switch flow from one main line to two different outlets. WYE type and pneumatic control type with no moving part.
Description : What is Quick acting valve?
Last Answer : Answer: Any on/off valve rapidly operable, either by manual lever, spring or by piston, solenoid or lever with heatfusible link releasing a weight which in falling operates the valve. Quick ... for water or for liquid service in general without a cushioning device to protect piping from shock.
Description : What is Vacuum breaker?
Last Answer : Answer: A special self-acting valve or any valve suitable for vacuum service, operated manually or automatically, installed to admit gas (usually atmospheric air) into a vacuum or low-pressure ... installed on high points of piping or vessels to permit draining and sometimes to prevent siphoning.
Description : What is Throttling valve?
Last Answer : Answer: Any valve used to closely regulate flow in the just-open position.
Description : What is Spiral sock valve?
Last Answer : Answer: A valve used to control flow of powders by means of a twistable fabric tube or sock.