If the mechanical seal is being used in a hot water application, the water may be turning to steam and evaporating (flashing off), which leaves the seal faces with no lubricant. Either change to a special mechanical seal designed for hot water applications or install a cooling water plan to prevent flashing.

It will pump more, but it will likely overload the motor. If you double the rotational speed of the motor from 1800 RPM to 3600 RPM, the horsepower required by a centrifugal pump actually increases by a factor of eight. Increasing the pump speed may also pressurize the pump beyond a safe working pressure and overload the shaft and bearings. Increasing the impeller is another option. Your OTP pump ...

No. The amount of water and the pressure (head) that a centrifugal pump produces is related to the rotational speed, impeller diameter and size of the impeller vanes.

It is likely cavitation. Cavitation means that cavities or bubbles are forming in the liquid being pumped. Symptoms of cavitation include excessive noise and vibration and loss of capacity, pressure and efficiency. Cavitation can cause damage to the pump. Solutions include changing the operational parameters or even replacing your pump with a pump better suited to the application.

More details or questions, please contact with us directly.Scott, E-mail : sales05@diffulpump,com WhatsApp/Tel: +86 15058288607 Wechat: diffulsales01 Skype: sales05..........com

More details or questions, please contact with us directly.Scott, E-mail : sales05@diffulpump,com WhatsApp/Tel: +86 15058288607 Wechat: diffulsales01 Skype: sales05..........com

surely, to make easy and simple water pump is the best fun for children and house delight.

Firstly, we do quality test during every process. And we use production instruction cards, when one process finished , the work will be signed on the production instruction cards.Secondly, we will collect all comments on our products from customers in time. And try our best to improving quality all the time.

Shipped in 25 days after payment, and urgent order please check with our sales and who will offer a good delivery time for you according to your urgent request by express shipping.

You can get reply within 24 hour from Monday to Friday, and within 48 hours at weekend.If need urgent,please call us so we can reply soon after we phone communicated.Phone call is warmly welcome 24 hours whole day.

You can get reply within 24 hour from Monday to Friday, and within 48 hours at weekend.If need urgent,please call us so we can reply soon after we phone communicated.Phone call is warmly welcome 24 hours whole day.

All product has CE certificated, some product with ISO8846 for marine usage.And drinking water pumps can be offered withi NSF certificate cause all our material made according to NSF & FDA certifate, but for our qty is not large enough, so we don't have it. If your order qty is enough for it, we can offer NSF Certificate within 6 months.

Our company is pleasure accept all items 1pcs order. And qty 1 pcs

Our company is pleasure accept all items 1pcs order. And qty 1 pcs

Pump lifetime mainly depends on motor lifetime,we have DC brush, brushless, coreless brushless motor For your choice, the pump warranty is 12 months.we can supply 1% spare parts for after service.

please tell me your detailed flow rate, voltage, application and so on, then I will match the most appropriate pump for you, or you can choose the exact model in the product manual.

We specialized in all kinds of water pump(deep well pump,DC solar pump,AC solr pump,peripheral pump,jet pump,centrifugal pump,multistage pump)with excellent quality and competitive

Yes, pls tell us the products information, and then we will searching for you.

Quality is very important and always be put at the first place. We insist one worker charge 1 process.Having our own Aluminum Die-casting Workshop and Plastic Injection Molding Workshop allow us more easy to control the quality.Inspections of each step will be done during the production process.

WE DELIVER GOODS VIA INTERNATIONAL EXPRESS LIKE FEDEX,UPS,DHL,TNT,EMS ETC.

WE DELIVER GOODS VIA INTERNATIONAL EXPRESS LIKE FEDEX,UPS,DHL,TNT,EMS ETC.

PROFESSION TESTING EQUIPMENT :FEEDBACK WITHIN 1 HOUR AND RESPONSE WITHIN 24 HOURS ON SITE AND WE WILL PROVIDE YOU THE PERFECT CUSTOMIZED SOLUTION.

LARGE CAPACITY :A DAILY CAPACITY OF 2000PCS PUMPS,WHICH IS A GREAT GUARANTEE FOR THE TIMELY DELIVERY.

Stainless steel pump body :More environmental protection,More safe.100%Copper wire :Electrical conductivity is strong,use life is longer.High efficient bearing: Hardness, high resistance to wearNew shaft :Using the latest 304#stainless steel shaft,have the Smooth operationOther:Using the food garde oil ，Copper outlet and high quality copper flat cable

Taizhou Dingfeng Electric Appliance Co.,Ltd.(also called Wenling Shanshi Capacitor Manufactory) was founded in 1989,a professional manufacturer of world-class metalized polypropylene film capacitors, aluminum electrolysis capacitors, power Capacitor，intelligent combined low-voltage power Capacitor, also include CJ19 Series switching capacitor contactor,reactive power compensation controller an...

The most time 30% deposit by T/T in advance,pay 70% balance when the products are finished. TT, L/C, West Union, Ali-Pay.......

Own our own factory, no more mark up and resale price.Aim at long-term cooperation, always offer our best price and best solution to you.