Why Close the Discharge Valve Before Starting the Centrifugal Pump?
Details
China Clothes
Clothes

Why Close the Discharge Valve Before Starting the Centrifugal Pump?

Reasons for closing the discharge valve

The starting current can be reduced by closing the discharge control valve.
The current will be very high when any motor starts. When the pump is started with an open discharge valve, the discharge head will have greater resistance to the pump. Therefore, the motor must give the pump a larger starting torque, which means that the motor needs to draw more current.
If the discharge valve pump are closed when the pump is started, it means that there is no discharge head and minimum resistance to the pump, and therefore the output current is the smallest. Although the current is greater than the normal value when the motor starts, closing the discharge valve of the centrifugal pump can avoid additional load on the pump.
Situations when the discharge valve can be opened
The nab discharge valves can be opened when there is a check valve. If there is pressure on the discharge side of the centrifugal pump without a check valve when starting, the discharge valve should be closed. With a transparent plastic pipe, leakage can be easily found. It should be used with clear PVC fittings to perform well. It's good to work with clear PVC pipe manufacturer to solve problems together.
Risks of the unclosed discharge valve
Thinking from another aspect, if there are pressures at the discharge end of the pump, it may flow back into the pump before starting. And it will cause backward rotation, which can attract more current and cause damage to the pump. Therefore, it can be prevented by closing the discharge valve of the centrifugal pump when it starts.
If you want to know more about why discharge valve is closed in centrifugal pump , please visit our website.

As a china globe valve manufacturer, we can offer sorts of Globe Valves for sale, anything you need, please leave us a message.

Location : No.20, Xingyu Road, Airport Industrial Zone, Wenzhou city, 325024 P.R. China, 325024 Wenzhou,
Contact : Wang Maggie, +13 9 58 97 18 12

Good deal: buying from seller

Visit our guide for a secure transaction! Under no circumstances Algomtl can be held responsible for the content of the ads published. Only the sellers and buyers responsability is involved in case of dispute.
We invite you to read our terms of use. You can also visit our FAQ section and see our information section on the risks associated with counterfeiting.
This page is about importers and exporters of
Why Close the Discharge Valve Before Starting the Centrifugal Pump?

Search in a category : Clothes
Search in a category :
starting, valve, discharge, pump, centrifugal, close
France 233010 Cosmetics and beauty
T Bolt Hose Clamp KTBF156

Tuesday, September 01, 2026

Quantity : 500 - Price : USD0.5/pc

100 years American Technology China Excellent Manufacturing Partner of Fortune top 500 Leading Brand in T bolt hose clamp Ind T Bolt Hose Clamp KTBF156 1)Rated Ultimate Torque: Plated Steel Bolt & Nut: 90in.lbs. (min.)(10.2Nm)300 Series Stainless Bolt & Nut: 75in.lbs...

King Seal Fastener Technology(Anhui) Co., Ltd.

  • 233010 - Bengbu
  • 86 552 4193229
France 30301 Equipment goods
Single Vacuum Insulating Oil Purifier

Thursday, July 14, 2016

SVP vacuum Insulating Oil Purifier is used to degassing, dehydration, filtration and recover dielectric strength of insulating oil, its design maximizes contamination removal by adopting heating, vacuum processing, filtering and increase surface area. SVP vacuum Insulating Oil Purifierfeatures...

HUAKEN Oil Filtration System Co.,Ltd

  • 30301 - Atlanta
  • 8615696242140
France 92600 Everything else / Bulk
DELTA PARTNER'S : Sandal thinness THE CELLULETTE is the 1°

Sunday, September 02, 2007

THE CELLULETTE is the 1° sandal thinness with tests of effectiveness carried out by an approved French laboratory, proving a significant thinning in 28 days of use. Proven slimming and anti cellulite effectiveness The sole of CELLULETTE slope backwards at an angle 8 degrees and the...

deltapartners

  • issy
  • 92600 - ASNIERES SUR SEINE
  • +33 1 41 11 34 34