pump discharge pressure questions

Just fill in the form below, click submit, you will get the price list, and we will contact you within one working day. Please also feel free to contact us via email or phone. (* is required).

  • Calculating pump-discharge-pressure-made-easy

    2021-2-7 · Clarification: In centrifugal pumps, their capacity is affected due to the presence of pressure that works against the pump they operate. 8. A quantity of fluid that leaks from a higher pressure discharge to a lower pressure discharge is called_____ a) Slip b) Heat c) Friction d) Enthalpy Answer: a Clarification: Slip is defined as the quantity of fluid that leaks from a higher pressure discharge to a lower pressure discharge…

    Get Price
  • 250+ TOP MCQs on Discharge of Reciprocating Pumps and

    2020-9-11 · The discharge pressure of a pump is lower than the calculated value of discharge pressure using the pump head. What could be the possible reasons? RE: Pump Low Discharge Pressure

    Get Price
  • Pump Low Discharge Pressure - Pump engineering - Eng-Tips

    2021-5-1 · B) Pump discharge pressure indicates shutoff head. C) Pump discharge pressure indicates zero. D) Pump motor amps are fluctuating. Question 24: Some large centrifugal pumps are started with their discharge valves closed to prevent… A) cavitation in the pump. B) excessive current in the pump motor. C) loss of recirculation (mini flow).

    Get Price
  • Pressure Gauge Installation at Pump Discharge ...

    2011-3-13 · There are 2 pumps parallel pumping same liquids. One is driven by turbine (Pump A), another by motor (Pump B). When Pump A operating, Pump B stop and vice versa.When Pump A running @ speed 2850 rpm, the flow was normal, both suction and discharge pressure normal.And then we switched it to Pump B (speed 2970).

    Get Price
  • Pumps Quiz - InstrumentationTools

    Discharge and Pressure Increase Pumps Discharge pumps with low product shearing ensure an optimal discharge of viscous polymer melts of reactors. The discharge pumps can be supplied with double-heating jacket or electrically heated. Booster pumps are usually performed as an inline pump. They are mainly used after an extruder or a discharge pump.

    Get Price
  • Sudden Drop of Pump Discharge Pressure - CR4 Discussion

    2004-1-30 · You can estimate the discharge pressure by evaluating the system pressure drop at the pump nominal flow. Then check with your supplier a)if the power consumption (system pressure drop @ pump nominal flow) is lower than the available motor power b)if the discharge pressure is lower than the design pressure of the pump (MAWP).

    Get Price
  • Discharge and Pressure Increase Pumps – Mahr Metering

    2008-8-7 · You will need to add any height difference between the pump and the measuring point to give a fairly accurate discharge pressure at the pump, ie, if the gauge is 2 metres higher than the pump centreline add 2 meters to the pressure reading on the gauge - you may need to correct for pumpage SG if you are pumping slurry with an sg > 1. Ork1 (Mining)

    Get Price
  • Estimate the discharge pressure of PD pump? - Pump ...

    2013-11-30 · suction pressure is positive and discharge pressure is very low compared to rated discharge head. It indicates that: A. Pump is not operating satisfactorily and pumping capacity is too low B. Pump is not operating satisfactorily and pumping capacity is higher than rated, throttling of discharge valve is required C. Pumping capacity is not affected by suction and discharge pressures D. Pump …

    Get Price
  • Centrifugal Pump Interview Questions 2 - Industrial Blogs

    2020-11-23 · Centrifugal Pump Interview Questions 2 contains questions about Priming in pump, static head in pump, friction head in pump, Centrifugal pump, High Discharge pump, NPSH for centrifugal pump, NPSH calculate it for a centrifugal pump, Which pump is more economical than centrifugal pump?, Positive displacement pumps

    Get Price
  • Centrifugal Pump Interview Questions 1 - Industrial Blogs

    2020-8-23 · Imagine a discharge valve slowly closing - the system curve (which looks like a parabola) will become steeper - and will intersect the pump curve at lower flow. Same for the opposite - if valve is opening - the system curve becomes 'shallower', and will intersect the pump curve at higher flow.

    Get Price
  • Pressure Gauge Installation at Pump Discharge ...

    2021-5-1 · It means if you would isolate a pump by closing suction/discharge isolation valves during maintenance and decide to depressure the pump (e.g.by opening the pump vent), you would realize the time mentioned pump is depressured by reading the PG, only when the pressure gauge has already been installed between pump and the check valve.

    Get Price
  • Centrifugal Pumps - Mechanical Engineering (MCQ)

    a. pressure energy b. kinetic energy c. either pressure energy or ... Discharge capacity of the reciprocating pump is _____ that of the centrifugal pump. a. higher than b ... Which pump is more suitable for an application where very high pressure is required to be developed at moderate discharge? a. Reciprocating pump b. Centrifugal pump c ...

    Get Price
  • Sudden Drop of Pump Discharge Pressure - CR4 Discussion

    2011-3-13 · I'd like to ask questions about pump. There are 2 pumps parallel pumping same liquids. One is driven by turbine (Pump A), another by motor (Pump B). When Pump A operating, Pump B stop and vice versa.When Pump A running @ speed 2850 rpm, the flow was normal, both suction and discharge pressure normal.And then we switched it to Pump B (speed 2970 ...

    Get Price
  • Commonly Asked Pump Questions | Triangle Pump

    COMMONLY ASKED PUMP QUESTIONS. ... If a pump has low head pressure, a lot of times it’s because it isn’t running a valve that matches the head pressure, which will cause a lot of problems. ... Foreign objects preventing the pump inlet or discharge valve(s) …

    Get Price
  • Discharge flow and pressure - Pump engineering - Eng-Tips

    2020-6-5 · In short yes you're correct. Inlet pressure + differential head from your pump curve = discharge pressure. However be careful. The may be a low limit on allowable inlet pressure and a limit on maximum discharge pressure. Look at your pump details or ask the vendor. Also do some tests yourself on the pump.

    Get Price
  • Wastewater Maintenance & Pumps Review Questions

    A wet well inlet has normal dry weather flow, but the wet well is empty with flow going directly to pump suction. The lead and lag pump are running, and both pumps check valve lifting arms are slightly above the closed position. The lead air compressor is running, and the low level pressure switch is closed. Electrical controls are in automatic ...

    Get Price
  • vfd pump selection constant pressure

    2016-11-12 · where constant pressure must be maintained over a broad range of flows. The addition of a simple pressure reducing valve (PRV) on the discharge of the pump will provide some predetermined constant pressure across the entire flow range of the pump. Figure 1 is an example of a PRV controlled constant pressure booster.

    Get Price
  • TUTORIAL CENTRIFUGAL PUMP SYSTEMS

    2015-5-1 · The term pressure loss or pressure drop is often used, this refers to the decrease in pressure in the system due to friction. In a pipe or tube that is at the same level, your garden hose for example, the pressure is high at the tap and zero at the hose outlet, this decrease in pressure is due to friction and is the pressure loss.

    Get Price
  • Discharge flow and pressure - Pump engineering - Eng-Tips

    2020-6-5 · In short yes you're correct. Inlet pressure + differential head from your pump curve = discharge pressure. However be careful. The may be a low limit on allowable inlet pressure and a limit on maximum discharge pressure. Look at your pump details or ask the vendor. Also do some tests yourself on the pump.

    Get Price
  • Sudden Drop of Pump Discharge Pressure - CR4 Discussion

    2011-3-13 · I'd like to ask questions about pump. There are 2 pumps parallel pumping same liquids. One is driven by turbine (Pump A), another by motor (Pump B). When Pump A operating, Pump B stop and vice versa.When Pump A running @ speed 2850 rpm, the flow was normal, both suction and discharge pressure normal.And then we switched it to Pump B (speed 2970 ...

    Get Price
  • A Pump Is To Deliver 80 Gallons Per Minute Of Wate ...

    A pump is to deliver 80 gallons per minute of water at 60°C with a discharge pressure of 1.0339 MPag. Suction pressure indicates 2 inches of mercury vacuum. The diameter of the suction and discharge pipes are 197 mm and 158 mm, respectively. The pump has an efficiency of 70%, while motor efficiency is 80%.

    Get Price
  • Pumping systems 101: What are pressure gauges actually ...

    2017-9-18 · Some pumps have a discharge pressure of 8 000 kPa, which for a 10-stage mine dewatering pump is normal. Some pumps have discharge pressures of 80 kPa, a high flow axial flow pump as an example. The problem with measuring the pump's discharge pressure is that the reading on its own is insufficient.

    Get Price
  • Determining Pump Dead Head Pressure and Pump Curve ...

    2020-10-4 · egingroup But WITHOUT the pump turned on, there is already a pressure drop between the inlet and outlet due to the long hose and impeller due to turbulence. The inlet is 14.3 psi. But d pump outlet is just 10 psi. This s wit water running in the faucet. When I turned on the pump. The outlet pressure is 20 psi.

    Get Price
  • 50 Questions and Answers For Marine Engineers

    2013-11-30 · discharge valve is required C. Pumping capacity is not affected by suction and discharge pressures D. Pump is operating normally Answer-B 6. In a reciprocating pump the direction of flow depends upon: A. Direction of rotation of the pump B. Position & fixing of suction and discharge valves C. High pressure to low pressure D. Whether pump is ...

    Get Price
  • Questions Related to Pump Alignment Pump Piping ...

    2015-6-29 · The discharge of one impeller is the suction of the next one and the head developed in all the stages are totaled. 4. How many types of centrifugal pump are available based on the suction and discharge arrangement? Based on the suction and discharge arrangement, the type of centrifugal pumps available is: – A. End suction top discharge.

    Get Price
  • Answered: A pump is to deliver 80 GPM of water at |

    A pump is to deliver 80 GPM of water at a density of 61. 83lb/ft cubed with a discharge pressure of 150 psig. Suction pressure indicates a 2 HG vacuum. The diameter of the suction and the discharge are 5 in. and 4 in. respectively. The pump has an efficiency of 70% …

    Get Price
  • Pump sizing calculations - sample problem - EnggCyclopedia

    The maximum height for the 6' discharge line above the pump discharge nozzle is 12m. The discharge vessel operates at a pressure of 3 barg. There is no control valve in the discharge line. Discharge line to be assumed 100m long considering all the fittings and valves. Assume pump efficiency to be close to 70% and motor efficiency to be close to ...

    Get Price
  • Sump Pump Discharge Ideas: Creative and Effective ...

    2019-9-7 · Sump pump discharge to the storm sewer system. The most common discharge point is the street, which then leads the water to the storm sewer structure. To do this you must obtain a Right-of-Way permit. This permit allows you to connect your …

    Get Price
  • Calculate pump and engine discharge pressure ppump,d

    2021-5-13 · Calculate pump and engine discharge pressure ppump,d and peng,d based on tubing performance. Calculate pump friction-induced pressure loss. Calculate required engine pressure . Calculate pressure change Dpinj from surface to engine depth in the power fluid injection tubing based on single-phase...

    Get Price
  • A Pump Is To Deliver 80 Gallons Per Minute Of Wate ...

    A pump is to deliver 80 gallons per minute of water at 60°C with a discharge pressure of 1.0339 MPag. Suction pressure indicates 2 inches of mercury vacuum. The diameter of the suction and discharge pipes are 197 mm and 158 mm, respectively. The pump has an efficiency of 70%, while motor efficiency is 80%.

    Get Price
  • An unloading valve is used to unload a 20-gpm pump. If the ...

    Answer to: An unloading valve is used to unload a 20-gpm pump. If the pump discharge pressure during unloading equals 30 psi, how much hydraulic...

    Get Price
  • Fire Pump Questions - Churn Pressure | Fire Sprinkler ...

    2015-6-3 · This pressure will often be around 120% of the rated pressure. Thus, if the pump is rated at 75 psi and has a churn of 120% it will produce a discharge pressure of 90 psi. This is the pressure with 0 psi suction. Now you must add the suction pressure to the pump pressure to get the final discharge pressure.

    Get Price
  • Pump Questions Flashcards | Quizlet

    In order to effectively provide water for fire streams, it is necessaary for the pumper operator to know the_____and_____to complete the pump pressure calculation. a. Amount of intake types of Nozzles b. Amount of friction loss pressure loss or gain of elevation c. Amount of pump discharge pressure number of lines to be operated d.

    Get Price
  • Pumps and compressors - ibiblio

    2018-11-22 · the discharge pressure under these conditions for a pump having an 8 inch diameter impeller spinning at 1760 RPM and a discharge port of 2 inches diameter, with water as the fluid (mass density ρ = 1.94 slugs per cubic foot) and assuming atmospheric pressure at the suction port: • Discharge flow = 0 GPM ; P = PSI

    Get Price
  • Questions Related to Pump Alignment Pump Piping ...

    2015-6-29 · The discharge of one impeller is the suction of the next one and the head developed in all the stages are totaled. 4. How many types of centrifugal pump are available based on the suction and discharge arrangement? Based on the suction and discharge arrangement, the type of centrifugal pumps available is: – A. End suction top discharge.

    Get Price
  • LECTURE 7 TO 9 HYDRAULIC PUMPS FREQUENTLY ASKED

    2017-8-4 · 4) Mount the pump as close as possible to the reservoir. 19. What is pressure compensated vane pump and how does it work In the unbalanced vane pump, the displacement can be varied by varying eccentricity. By a compensator piston arrangement, the eccentricity is varied depending on the system pressure there by pump delivery is varied. 20.

    Get Price
  • Centrifugal Pumps - Engineering ToolBox

    2021-5-7 · p 1 = pressure at inlet (N/m 2) ρ = density (kg/m 3) g = acceleration of gravity (9.81) m/s 2. v 2 = velocity at the outlet (m/s) Head described in simple terms. a pump's vertical discharge 'pressure-head' is the vertical lift in height - usually measured in feet or m of water - at which a pump can no longer exert enough pressure to move water.

    Get Price
  • Sump Pump Discharge Ideas: Creative and Effective ...

    2019-9-7 · Sump pump discharge to the storm sewer system. The most common discharge point is the street, which then leads the water to the storm sewer structure. To do this you must obtain a Right-of-Way permit. This permit allows you to connect your …

    Get Price
  • Calculate pump and engine discharge pressure ppump,d

    2021-5-13 · Calculate pump and engine discharge pressure ppump,d and peng,d based on tubing performance. Calculate pump friction-induced pressure loss. Calculate required engine pressure . Calculate pressure change Dpinj from surface to engine depth in the power fluid injection tubing based on single-phase...

    Get Price
  • An unloading valve is used to unload a 20-gpm pump. If the ...

    Answer to: An unloading valve is used to unload a 20-gpm pump. If the pump discharge pressure during unloading equals 30 psi, how much hydraulic...

    Get Price
  • Pumping systems 101: What are pressure gauges actually ...

    2017-9-18 · Some pumps have a discharge pressure of 8 000 kPa, which for a 10-stage mine dewatering pump is normal. Some pumps have discharge pressures of 80 kPa, a high flow axial flow pump as an example. The problem with measuring the pump's discharge pressure is that the reading on its own is insufficient.

    Get Price
  • Pump Troubleshooting Guide | JAECO Fluid Systems

    Issue: Pump is Delivering too Much Capacity. This is usually due to insufficient discharge pressure or too much suction pressure. Try to increase your discharge pressure (a note: to ensure proper check valve operation, your pump discharge pressure should be 15-30 psi more than your suction pressure). Issue: Check Valves are Noisy When Operating

    Get Price
  • Pumps and compressors - ibiblio

    2018-11-22 · the discharge pressure under these conditions for a pump having an 8 inch diameter impeller spinning at 1760 RPM and a discharge port of 2 inches diameter, with water as the fluid (mass density ρ = 1.94 slugs per cubic foot) and assuming atmospheric pressure at the suction port: • Discharge flow = 0 GPM ; P = PSI

    Get Price
  • How to calculate discharge flow rate of a pump with valve ...

    From the pressure information (pump differencial head) and the pump performance curve (head as function of the flow rate) you can calculate the flow rate. Cite 3rd Jul, 2016

    Get Price
  • Pump Quest: shut off pressure, minimum flow and related ...

    2012-1-6 · Jockey pump had a pressure-switch control set at 15.4 bar whereas main pump rating was 12 bar. These pressure-settings seem to be unduly high. Pressure-switch setting of 12.5 bar for the jockey pump should be good enough and at that pressure the jockey pump would be safely away from safe minimum flow. Then shaft-failures would not happen.

    Get Price
  • Pump & Pressure - Water Treatment Guide

    2019-10-28 · The pump that delivers water to the refrigerator is noisy. The pressure switch controlled demand delivery pump is probably delivering more water than the icemaker can accept (usually about 1/4 gpm at 35 psi), and is momentarily reaching its shutoff pressure. Use a lower flow pump, and add an accumulator between

    Get Price
  • Pump sizing calculations - sample problem - EnggCyclopedia

    The maximum height for the 6' discharge line above the pump discharge nozzle is 12m. The discharge vessel operates at a pressure of 3 barg. There is no control valve in the discharge line. Discharge line to be assumed 100m long considering all the fittings and valves. Assume pump efficiency to be close to 70% and motor efficiency to be close to ...

    Get Price
  • HOW TO design a pump system

    2019-2-15 · The pump produces pressure and the difference in pressure across the pump is the amount of pressure energy available to the system. If the fluid is dense, such as a salt solution for example, more pressure will be produced at the pump discharge than if the fluid were pure water.

    Get Price