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Hi, I wonder if my setting of Variable speed drive need to be fined tune for Constant torque application. Application: 10 HZ of 15 KW 4 Pole 50 Hz Pump: Plunger triplex at 20 LPM Pressure: 50 Bar achieved by regulating the throttle valve with gate valve VFD; ATV 610D Setting : only set for 25...

Hi, We have triplex pump running for sometime with VFD of 20% of 50 HZ Cat Pump 11 KW 4 Pole motor 400 V Maximum current 415 V is 20.2 Ampere. We see the running current at Discharge Pressure of 51 Bar is 20.6 Ampere and at 0 Bar is 11 Ampere. At 0 Bar to 45 Bar, the motor was running okay...

With reference to this similar thread, therr was discussion that a pump, pressumed a self priming is able to lift up to 12 m height. https://www.eng-tips.com/viewthread.cfm?qid=307610 Iam wonderin if how it be possible considering a pump is having NPSHr, let say 0.3 to 1 meter depending on...

Hi I have some doubts on laser alignment of pump to gearbox and Motor. While aligned the pump and geaebox, after vertical adjustment is within tolerance, I moved to the horizontal alignment while leaving the vertical bolt snugged. Thw result,after horizontal adjustment, the remeasured show...

Hi, I am just wondering if this technology is the same. 1. Can we use gas pressure transducer to measure liquid ? 2. Reasons being, it is easier availanle and economical to find a BLE Pressure transducer for gas that has a featurez of data logging and alarm to measure vacuum to presure...

HI Gentleman, Thanks for your attention, I am seeking some advise as after export there is unknown center line on the M8 Bolt. I tried to change the hidden line to 0.13 Below the file link of the issue and my setting [Better resolution] Link Thanks you for your kind time and attention

Hi Just wonder, understand that a centrifugal is not a constant flow device, have Some doubts on the parameter to considered in the frictional loss calculation. Let say we have following system for simplicity 1. Horizontal line 200 Feet (Pipe 2 to 7 As illustration) 2. Elevation 0 m 3. Elbow...

Hi Sir, Here's the situation: We retrofit a fuel system, We use centrifugal pumps that are sitting directly at the storage tanks to pump to existing day tank which is all at level 1, pressure is less than 2 bar maximum. Now, our end user is build a new building with the day tank on the top...

Hi, I am sizing the pump that is already the smallest Total head requuired is 20 m, flow 7 m3ph The smallest pump is having 25 m3ph 20 m. Throttled to 30 m , Would get 7 m3ph,this the recommended throttled to get Can we throttled to 30 m, then the balance of liquid like 4.5 m3ph going to...

Hi, I am looking for skid fabricator for metering pumps system with the following requirement Other documentation shall include : quality manual, quality certificate, WPS, NDT procedure, Coating procedure, QA/QC document and all related to fabrication of the skid. Detail engineering will...

Hi, I would like to get suggestion for calculation of acceleration head in NPSH calculation . This is positive displacement pump, single acting plunger pump. with a common header pipe configuration with various pipe dia fron tank to pump 1. Tank source is 3" pipe to common header est 49 m 2...

Hi i read about sentry pulsation dampener and inlet stabilizer. I would like to know if the suction and discharge dampener can be installed in this configuration. Quote LOCATION: Location is important because of wave frequency and fluid dynamics. Location directly effects dampened...

Hi, I have the system of multiple tank that is connected to a common suction and discharge header, the suction header was oversized to accommodate multiple pump running. 1. Common header is 4 inch 2. 4" Tees from common header shall be reduced to match pump nozzle 2" suction and nozzle I...

Hi, I have a system that have the following: Atmospheric Tank is 10 meter height 3 reciprocating pumps running in parallel at 13 GPM 4 Inch common header from the tank and then 3 pumps are tees from this 4 inch header with 2 Inch pipe diameter at 13 GPM. Pumping is Chlorine Question, 1. If...

Hi, I am studying a case of the metering pump running in parallel with the following service 1. 1056 GPH 2. 3 Pumps running in parallel at the same time 3. Suction line is about 40 Meter: Section 1: From tank outlet nozzle is 3", 16 feet Section 2: From 3" to common header is 6", 98 feet...

Hi, I would seek an advise as I have MSDS of pumping liquid of diesel additive. In general industry, we have the barrier fluid of silicon oil pressure transmitter to monitor the system. I like to know how safe or compatible the silicon oil since it is used if any leakage and mixed with...

Hi, Need some advise as I am having a pump with automatic stroke control by analog 4-20ma There is input signal and feedback to Scada. What i experienced,issue. There is unknown interference that drift the actuator forward and backward. We measured the input signal using milliam multimeter...

Hi, Understand that reciprocating pump produce acceleration losses which would be essential to calculate. For the system that has pump running in parallel, does the consideration of calculating the acceleration losses would use different formula. Acceleration losses is normally is calculated...

We have a metering hydraulic diaphragm type pump with design suction pressure positive, discharge pressure 13 barg. If turn out to be the pump is 2", it is feasible option to use of 1" discharge pressure. Assuming the pressure loss calculated has been calculated based on the 1" pipe diameter...

Hi, What is the most practical variable to considered when sizing the back pressure valve for the metering pump ? In most of the cases, the pump process discharge flow is having a bigger size such as 2" port diameter Given rated flowrates of the pump would allow me to determine max pulsating...