what causes high pump discharge pressure

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).

  • Discharge Pressure - an overview | ScienceDirect Topics

    Pump discharge pressure is determined by the rated horsepower of the motor, and the liner and piston size. The smaller the liner, the higher the discharge pressure, but the smaller the displacement per stroke. Supervisors must know the following basic information about the pump: • Pump pressure rating • Maximum and minimum pump speed—strokes per minute

    Get Price
  • Determining the Cause of Higher-Than-Normal

    2021-2-9 · The final step in a pump system is discharge pressure. This pressure is influenced by the amount of material in the system; if the system is low on material, the pressure will likely be lower, but the majority of the value is independent. A pump’s discharge pressure is generally determined by two main factors: pump strength and nozzle design.

    Get Price
  • Common Causes Of High Compressor Discharge

    2016-1-12 · This series focuses on evaluating piping systems for which calculated results do not match displayed plant instrumentation. Part 1 ('Troubleshooting Pumps in a System,' Pumps & Systems, December 2015) examined the components of the pump and drive, and the conclusion of this series will examine possible causes for an increased discharge pressure.

    Get Price
  • What Is Discharge Pressure? - Info Bloom

    2017-8-10 · The pressure at the discharge of the pump, however, will be higher for the heavier solution. That’s why we would not be able to do simply looking at a pressure gauge and figure out what is pump’s discharge head ability is. Hopefully this post reveal some light on the difference between head and pressure.

    Get Price
  • Troubleshooting Pumps in a System | Pumps & Systems

    2020-9-13 · 2. Discharge Cavitation. Discharge cavitation takes place if the pressure at the discharge end of the pump is too high. High discharge pressure restricts the volume of fluid flowing out of the pump, and it causes recirculation of the fluid in the pump housing, this action creates cavitation.

    Get Price
  • Discharge Cavitation - Centrifugal Pump

    2018-4-2 · Discharge cavitation occurs when the pump’s discharge pressure is too high. Under these conditions, it’s difficult for the fluid to flow out of the pump. Instead, it continues moving at high velocities inside the working chamber, forming bubbles in the process. Common causes of discharge cavitation include: Clogged filters

    Get Price
  • Pump Head vs Discharge Pressure (Easy explanation

    2021-5-14 · 3. Suction lift too high: If no obstruction at inlet, check for pipe friction losses. However, static lift may be too great. Measure with mercury column or vacuum gauge while pump operates. If static lift is too high, liquid to be pumped must be raised or pump lowered. 4. Discharge system head too high: Check pipe friction losses.

    Get Price
  • Conditions That Can Cause High Discharge Pressure

    Conditions That Can Cause High Discharge Pressure. 1. High ambient temperature. 2. Air or non-condensables in system. 3. Restricted airflow across condenser. Dirty condenser fins etc. 4. A restriction in the high-pressure line between the compressor and the receiver tank. 5. Overcharge of refrigerant. 6.

    Get Price
  • What causes high pressure on AC system? -

    2020-5-31 · Discharge pressure (also called high side pressure or head pressure) is the pressure generated on the output side of a gas compressor in a refrigeration or air conditioning system. An extremely high discharge pressure coupled with an extremely low suction pressure is an indicator of a refrigerant restriction.

    Get Price
  • What is Discharge Cavitation - Definition

    2019-5-22 · Discharge Cavitation. Discharge cavitation occurs when the pump discharge pressure is extremely high or when the discharge flow is restricted and cannot leave the pump (e.g. caused by closed outlet valve). An extremely high discharge pressure results in the majority of the pumped fluid circulating inside the pump.. This type of cavitation originates from two sources.

    Get Price
  • Causes And Solutions Of High Pressure Failures Of

    2019-12-9 · The high-pressure fault of the chiller means that the compressor exhaust pressure is too high, which causes the high-pressure protection relay to operate. The compressor discharge pressure reflects the condensing pressure. The normal value should be 1.4 ~ 1.8MPa, and the protection value setting is recommended not to exceed 2.0MPa.

    Get Price
  • Problem With Discharge Pressure In Centrifugal Pump ...

    2014-3-4 · Hello everyone, We are facing problem in our cooling water centrifugal pump discharge pressure. The pump design details are below Motor Description Pump Description Frame No ND 160 M Ref HCAM 0966 HYD Pr 24 Bar Efficiency 86 Machine No 13090675 KW (HP) 11 (15) Capacity 600 LPM RPM 2920 Pressure 3.5 bar Voltage 415 ± 10% RPM 2920 Bearing DE-6309; NDE-6209,2RS Year …

    Get Price
  • What are the Most Common Causes of Cavitation in

    2018-4-2 · Discharge cavitation occurs when the pump’s discharge pressure is too high. Under these conditions, it’s difficult for the fluid to flow out of the pump. Instead, it continues moving at high velocities inside the working chamber, forming bubbles in the process. Common causes of discharge cavitation include: Clogged filters

    Get Price
  • Pump Head vs Discharge Pressure (Easy explanation

    2017-8-10 · During commissioning, an initial assessment the pump Head by reading the Discharging pressure gauge (P2 as above image, ex: 1 bar ~ 10 m height), and it’s not correct concept because of the Pump Head is not quite the same thing as a Discharge Pressure.. So what is the difference between pressure and head then?. While some pump manufacturers that use pressure (differential pressure …

    Get Price
  • Common Causes of Cavitation in Pumps | Triangle

    2017-5-16 · Types of Pump Cavitation. There are two types of cavitation that may occur in reciprocating positive displacement applications: suction and discharge. Suction cavitation occurs ahead of the suction stroke, when the pump is starved of flow, either from being in a high-vacuum or low-pressure …

    Get Price
  • Useful information on pump cavitation

    With centrifugal pumps, the discharge pressure will be reduced from that normally observed or predicted by the pump manufacturer. In positive displacement pumps, cavitation causes a reduction in flow rather than head or pressure because vapour bubbles displace fluid from the …

    Get Price
  • High Amperage problem with centrifugal pump

    2005-6-9 · High amperage, KSB sugestion: Check if actual back pressure is lower then specified. If so, increase back pressure. If so, increase back pressure. Thus it comes back to oversizing or too low resistance to flow as mentioned by Ray BeeBe.

    Get Price
  • Common Causes Of High Compressor Discharge

    Common Causes Of High Compressor Discharge Pressure A refrigeration cycle is a cycle that shows the transformation of a refrigerant within a closed loop system. Normally, the refrigerant cycle starts when the refrigerant enters the compressor at a low pressure but with the presence of high pressure…

    Get Price
  • What causes high pressure on AC system? -

    2020-5-31 · Discharge pressure (also called high side pressure or head pressure) is the pressure generated on the output side of a gas compressor in a refrigeration or air conditioning system. An extremely high discharge pressure coupled with an extremely low suction pressure is an indicator of a refrigerant restriction.

    Get Price
  • What causes high head pressure on AC?

    An extremely high discharge pressure coupled with an extremely low suction pressure is an indicator of a refrigerant restriction. What causes high head pressure and low suction pressure? The fact that these readings are normal indicates the low suction pressure is not caused by low refrigerant, but insufficient heat getting to the evaporator.

    Get Price
  • What Is Discharge Pressure? - Info Bloom

    2021-2-9 · The final step in a pump system is discharge pressure. This pressure is influenced by the amount of material in the system; if the system is low on material, the pressure will likely be lower, but the majority of the value is independent. A pump’s discharge pressure is generally determined by two main factors: pump strength and nozzle design.

    Get Price
  • Cavitation in Centrifugal Pumps | nuclear-power.net

    2021-5-8 · Discharge Cavitation. Discharge cavitation occurs when the pump discharge pressure is extremely high or when the discharge flow is restricted and cannot leave the pump (e.g. caused by closed outlet valve). An extremely high discharge pressure results in the majority of the pumped fluid circulating inside the pump.. This type of cavitation originates from two sources.

    Get Price
  • What Causes High Booster Discharge Temperatures? •

    2018-3-19 · Typical boosters used in oil-field applications are, as the name implies, designed to boost incoming compressed air, nitrogen, or natural gas to a higher discharge pressure. Boosters come in a number of combinations regarding cylinder size and number of stages depending on the flow of compressed gas and the discharge pressure required. When discussing high […]

    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
  • Reciprocating Pumps Trouble Shooting Guide |

    Pump RPM too Low; Inadequate Ventilation; Liquid End Packing Adjusted too Tight (adjustable style packing only) Top Pump Overloads Driver. Pump RPM too High; Low Voltage or other Electrical Trouble; Trouble with Engine, Turbine, Gear Reducer or other Related Equipment; Excessive Discharge Line Pressure; Clogged Discharge Line

    Get Price
  • Top 6 Causes of Slurry Pump Problems - KSB

    2021-5-7 · Improper installation — An improperly installed pump may contribute to a variety of issues, including high operating temperature, an overloaded motor, flange leaks, and vibration. Lack of maintenance — If a pump has contaminated bearings, suffers leakage, or runs at a high temperature, a lack of regular and proper maintenance could be to blame.

    Get Price
  • High Amperage problem with centrifugal pump

    2005-6-9 · High amperage, KSB sugestion: Check if actual back pressure is lower then specified. If so, increase back pressure. If so, increase back pressure. Thus it comes back to oversizing or too low resistance to flow as mentioned by Ray BeeBe.

    Get Price
  • Common Causes of Cavitation in Pumps | Triangle

    2017-5-16 · Discharge cavitation occurs when the pump’s discharge pressure is too high. Under these conditions, it’s difficult for the fluid to flow out of the pump. Instead, it continues moving at high velocities inside the working chamber, forming bubbles in the process. Common causes of discharge cavitation include: Clogged filters

    Get Price
  • Developing Accurate Pump Discharge Pressures | Fire ...

    2018-7-1 · Determining Pump Discharge Pressure. I use the flowmeter on the supply side of the evolution within at least two 20-foot sections of three-inch hose; one is connected to the hydrant and then to ...

    Get Price
  • What Causes High Suction Pressure? Everything You

    2021-5-12 · High pressure occurs when the needle valve gets partially stuck open and goes directly into the compressor’s crankcase. This causes both high low-side pressures and low high-side pressures. You should closely monitor whether or not the oil return line is …

    Get Price
  • Heat Pump - Flashing Code 2 (Cooling) - GHAC ::

    2020-10-23 · York Heat Pump: Yorkguard IV & Yorkguard V. Re: Flashing Code 2 (Cooling) Code 2 = High Discharge Pressure. If the Hi Pressure circuit input on the Yorkguard opens, the module will go into a Code 2 lockout and disable compressor operation.

    Get Price
  • Maintenance Tip: Troubleshooting High Horsepower |

    High seal water flows are caused by several reasons, including high seal water pressure, lack of orifices, and worn spray nozzles (if the pump has them) - or all of the above. Typical seal water pressure is 10-15 psig (70-100 KPa). Again, this pressure reading should be before the orifice and spray nozzle.

    Get Price
  • Visual Encyclopedia of Chemical Engineering

    At the same time, the discharge valve is closed, preventing backflow. On the discharge stroke, the volume of the pump cavity decreases, causing the pressure inside the cavity to increase. This increased pressure closes the suction valve and opens the discharge valve, forcing the fluid out of the pump.

    Get Price
  • Centrifugal Pump Vibrations - The Causes

    2019-10-30 · Three Basic Causes of Pump Vibrations: ... You can’t run a pump with suction and discharge valves closed! Minimum Flow 1750 rpm 15-20% BEP Flow 3500 rpm 30-50% BEP Flow. Maximum Flow 110-115% BEP Flow. Speed. Suction Pipe Immersion. EASTMAN Avoid Max Size Impellers Conclusions. EASTMAN

    Get Price
  • Waterhammer: causes and variables - Pump Industry

    2019-8-6 · In most pressure boost applications, a “spring loaded” check valve is installed at or near the pump discharge and remains closed when the pump is idle. When the pump is started, flow does not begin until the pressure it generates exceeds the pressure on the downstream side of the closed valve.

    Get Price
  • Top Six Pump Vibration Problems – Houston Dynamic

    #3: Pump Flow Pulsation. This condition develops when a pump is operating near its shut-off head. Pressure gauges on the pump’s discharge piping will fluctuate. If the pump uses a discharge swing check valve, the counter-weight and valve arm will move to indicate unstable flow. One of the major causes of pulsation is the lack of proper feed.

    Get Price
  • pump taking high current - Pump engineering - Eng

    2016-2-8 · If this pump has always had higher amps, it could have the wrong impeller pattern or impeller diameter. Block the pump in and measure dead-head pressure. If the impeller was left full size and not trimmed, this will show up as high dead-head pressure. Measure the flow and pressure with the …

    Get Price
  • What Causes High Suction Pressure? Everything You

    2021-5-12 · High pressure occurs when the needle valve gets partially stuck open and goes directly into the compressor’s crankcase. This causes both high low-side pressures and low high-side pressures. You should closely monitor whether or not the oil return line is …

    Get Price
  • Waterhammer: causes and variables - Pump Industry

    2019-8-6 · In most pressure boost applications, a “spring loaded” check valve is installed at or near the pump discharge and remains closed when the pump is idle. When the pump is started, flow does not begin until the pressure it generates exceeds the pressure on the downstream side of the closed valve.

    Get Price
  • Designing Equipment to Avoid Pump Cavitation

    2018-8-9 · Poor pump suction. Discharge Cavitation. Discharge cavitation, on the other hand, occurs when the pressure at the discharge end of the pump is excessively high. These high discharge pressures limit the amount of fluid flowing out of the pump, resulting in recirculation of high-velocity fluid between the pump impeller and the housing.

    Get Price
  • Centrifugal Pump Vibrations - The Causes

    2019-10-30 · Three Basic Causes of Pump Vibrations: ... You can’t run a pump with suction and discharge valves closed! Minimum Flow 1750 rpm 15-20% BEP Flow 3500 rpm 30-50% BEP Flow. Maximum Flow 110-115% BEP Flow. Speed. Suction Pipe Immersion. EASTMAN Avoid Max Size Impellers Conclusions. EASTMAN

    Get Price
  • Heat Pump - Flashing Code 2 (Cooling) - GHAC ::

    2020-10-23 · York Heat Pump: Yorkguard IV & Yorkguard V. Re: Flashing Code 2 (Cooling) Code 2 = High Discharge Pressure. If the Hi Pressure circuit input on the Yorkguard opens, the module will go into a Code 2 lockout and disable compressor operation.

    Get Price
  • Succeed at Vacuum System Troubleshooting |

    2015-8-31 · Excessive pump discharge or backpressure. A vacuum pump is designed to discharge to atmospheric pressure or just slightly above unless the manufacturer specifically designates it a compressor. As the discharge pressure of the pump increases above atmospheric pressure, this raises the differential pressure across the pump, resulting in:

    Get Price
  • Visual Encyclopedia of Chemical Engineering

    At the same time, the discharge valve is closed, preventing backflow. On the discharge stroke, the volume of the pump cavity decreases, causing the pressure inside the cavity to increase. This increased pressure closes the suction valve and opens the discharge valve, forcing the fluid out of the pump.

    Get Price
  • Vacuum Pump Troubleshooting - Vacuum Pump

    Probable Causes. a) Inadequate/excessive lubricant. b) Contaminated lubricant. c) Coupling sheave misaligned. d) Excessive belt tension e) Strain from piping. f) Soft foot on pump. g) High discharge pressure. h) High thrust load on out-board bearing . Solutions. a) …

    Get Price
  • Maintenance Tip: Troubleshooting High Horsepower |

    High seal water flows are caused by several reasons, including high seal water pressure, lack of orifices, and worn spray nozzles (if the pump has them) - or all of the above. Typical seal water pressure is 10-15 psig (70-100 KPa). Again, this pressure reading should be before the orifice and spray nozzle.

    Get Price
  • How to Solve 13 Common Plunger Pump Application

    2018-7-12 · Causes can include diaphragm head bolts not being tightened, the pump being overfilled with oil, the oil plug being loose or the breather cap being loose or missing completely. 11. Discharge piping. Always ensure the discharge pipe is sized correctly for the application and to the right pressure rating in excess of the pump’s design. 12.

    Get Price
  • Cause of high pressure in heat pump heating.

    2013-4-12 · Hello All, Having an issue with a heat pump running at high discharge temp and pressure and tripping on high pressure. I pulled charge and weighed it back in. Was low on charge which was caused by a poor service port gasket. Unit runs a little longer and trips on high pressure. Filters good, coil clean, charge good. Suspect outdoor unit txv.

    Get Price
  • Cavitation, Its causes and prevention - Engineering

    2017-7-19 · The high discharge pressure makes it difficult for the fluid to flow out of the pump, so it circulates inside the pump. Liquid flows between the impeller and the housing at very high velocity, causing a vacuum at the housing wall and the formation of bubbles. As with suction cavitation, the implosion of those bubbles trigger intense shockwaves ...

    Get Price
  • Centrifugal Pump Maintenance | Learn What Killing

    2018-2-18 · Suction cavitation can be a result of running the centrifugal pump under low pressure for a prolonged period. While discharge cavitation can be the result of running the pump with very high discharge pressure or running it at less than 10% of its BEP (Best efficiency point). Choked strainers and filters. Poor NPSH (Net positive suction head)

    Get Price
  • Pump Cavitation : Operation,Types, Causes, and

    2020-3-17 · Discharge Cavitation. This cavitation takes place when the discharge pressure exceedingly high or less than that of 10% of BEP. The extreme pressure values create a problematic situation for the liquid to come out and so it will re-circulate all across the pump.

    Get Price
  • Checklist of Problems vvith Centrifugal Pumps and their

    2017-8-25 · Possible Causes 1. Air pockets in pump or pipelines 2. Suction line clogged 3. Foot valve stuck to seat or clogged 4. Strainer covered with solid, usually stringy, matter 5. Strainer filled with solid matter such as sand 6. Discharge pressure required by system is higher than maximum pressure developed by pump 7. Operating speed too low 8.

    Get Price
  • Increasing the Pressure Inside the Pump Head So ... -

    Increasing the Pressure Inside the Pump Head So That It Exceeds the Discharge Pressure. The easiest way to accomplish this is to depressurize the discharge side by opening the discharge-side valve to atmospheric pressure. If the pump is injecting liquid into a high-pressure tank, relieve the pressure using a three-way valve.

    Get Price
  • Challenges with a large high pressure water injection pump

    2018-7-12 · In 2009, a project was initiated to install two large high pressure water injection pumps producing 586 bar (8500 psig) discharge at 9.3MW (12,500 hp) on an existing deep water offshore platform. Several technical challenges were overcome during the factory acceptance testing of the pumps that led to some seemingly minor design changes.

    Get Price
  • HOW TO design a pump system

    2019-2-15 · Pressure is produced by the rotational speed of the impeller vanes. The speed is constant. The pump will produce a certain discharge pressure corresponding to the particular conditions of the system (for example, fluid viscosity, pipe size, elevation difference, etc.).

    Get Price
  • Problem Solving - Centrifugal Pumps

    2017-7-12 · the pump to the discharge side of the pump. Filling the inlet system with fluid or at least filling the pump (wetted pumping elements) will make a major improvement in the pump’s priming capability. 2.1.2 The motor is turning pump in the wrong direction Centrifugal pumps should never be allowed to operate in the wrong direction of rotation.

    Get Price
  • Commonly Asked Pump Questions | Triangle Pump

    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. If the valve is undersized it might not be capable of allowing a high enough flow rate. If the valve is oversized the system will be very sensitive.

    Get Price