Quality Horizontal High Pressure Pump for Enhanced Water Flow

• Customization: Available
• After-sales Service: Online After-Sale Service
• Warranty: 12 Months
• Model NO.: SHDG85-45/8
• Max.Head: >150m
• Max.Capacity: >400 L/min
• Driving Type: Motor
• Impeller Number: Multistage Pump
• Working Pressure: High Pressure Pump
• Influent Type of Impeller: Single Suction Pump
• Position of Pump Shaft: Horizontal Pump
• Pump Casing Combined: Verticaljoint Surface Pump
• Mounting Height: Suction Centrifugal
• Impeller: Closed
• Usage: Pump, Pumps, Condensate Pump, Circulating Pump
• Material: Cast Iron, Cast Steel, Stainless Steel, Bronze
• Seal Type: Mechanical Sea or Packing Gland Seal
• Coupling: Flexible Pins/Disc
• Driver: Electric Motor/Diesel Engine
• Transport Package: Plywood Case
• Specification: 2200*900*1500mm
• Trademark: SEMHAI or OEM
• Origin: China
• HS Code: 8413709990
• Production Capacity: 1000000sets/Year

Product Description

Product Description

Introducing the SHD and SHDG series, your ultimate choice for a single-suction multistage segmental centrifugal pump! Designed for seamless water conveyance and adaptable to fluids mirroring water's physical and chemical traits, these pumps efficiently handle fluids devoid of solid particles. With the SHD variant, enjoy fluid transmission at temperatures below 80 ºC, making it ideal for mining, industrial facilities, and urban drainage systems. For heightened demands, the SHDG model manages temperatures up to 105 ºC, catering perfectly to boiler feed applications and the transportation of hot water, among other scenarios.

Structural Features
The SHD and SHDG pumps are meticulously engineered with an ensemble of stator, rotor, bearings, and a robust shaft seal.
1. Stator Part: This comprises the key components such as the inhalation, middle, and discharge sections, coupled with guide vanes and tightly secured by tension bolts. The SHD model features a horizontal inlet and vertical outlet, while the SHDG is designed with vertical inlets and outlets for flexible application.
2. Rotor Parts: At the heart, you'll find the shaft, impeller, balance plate, and bushings, all working in harmony. The shaft transmits power seamlessly to the impeller, ensuring operational efficiency, with axial forces perfectly balanced by the balance plate. Both ends of the shaft are fortified with replaceable shaft sleeves for added protection and longevity.
3. Bearing Part: Experience the reliability of two types of bearings: rolling and sliding.
Sliding bearings are composed of a bearing body, caps, bearings, dust disk, oil level gauge, and rejection mooring rings, all lubricated with premium thick oil. Conversely, rolling bearings consist of a streamlined main body and bearings within a gland, utilizing grease for superior lubrication.
4. Shaft Seal Parts: With versatility in mind, choose between a mechanical seal or a packing seal. The seal system incorporates a water segment and filler, ensuring a secure seal with a retaining ring at the tail cover. Enjoy the dual functionality of the seal chamber in water sealing, cooling, and lubrication. The SHD model draws seal water from within the pump, while the SHDG pulls from an external cooling source. Seal water pressure should be 0.05-0.1MPa above seal chamber pressure, while cooling water pressure should range from 0.15-0.3MPa for optimal performance.

Additionally, the pump is driven directly by a prime motor through a flexible coupling, with a clockwise rotation observed from the motor's perspective.

Enjoy power versatility with the SHD and SHDG pumps, as they can be efficiently driven by either an electric motor or a diesel engine, offering adaptability to your operational needs.

Detailed Photos

In the realm of multistage centrifugal pumps, a significant thrust is produced due to all impellers being oriented in the same direction. To manage this high thrust, a sophisticated thrust balance device, such as a balance disc or balance drum, is employed. This device skillfully reduces the thrust to a manageable level, allowing it to be handled effectively by a standard-sized thrust bearing.
The impeller material options include cast iron, cast steel, stainless steel, and bronze, each offering distinct advantages for various applications.

Advanced Flexible Couplings
Flexible couplings stand out from their rigid counterparts by their ability to accommodate minor movements, such as vibrations and thermal expansion, without sustaining damage. This makes them an optimal choice for scenarios where a degree of unavoidable misalignment exists between the drive and pump shafts. Their excellent vibration absorption capability also contributes to reduced operational noise. Although they feature a more complex and costly design, their ability to safeguard the shaft and bearings from damage and premature wear translates into significant maintenance cost savings over time.
We proudly employ wear-resisting disc couplings or pin couplings, ensuring durability and efficiency.

Packing seals have maintained their status as the most widely utilized sealing solution over the years. These seals employ rope-like materials that encircle the pump shaft, effectively filling dead spaces and minimizing fluid loss. However, as time progresses, fluid loss increases as the gland packing material wears down, potentially impacting regular lubrication and ease of replacement necessary for optimal function.

Mechanical seals have gained preference over traditional packing seals in a wide array of applications where leakage prevention is critical. Renowned for their durability, mechanical seals are engineered to endure significantly more wear and tear. These innovative seals utilize multiple sealing points to virtually eliminate leakage concerns.

Product Parameters

Flow rate	6-1000m3/hr
Head rate	25-650m
Speed	1450-2900rpm
Medium temperature	0-105 ºC
Diameter	40-350mm

Product Application

Our Quality Horizontal High Pressure Pumps are integral components in pressure boosting systems. These extraordinary pumps are engineered to deliver consistent flow and pressure, making them indispensable in a wide array of projects. Some of the most prevalent applications for these horizontal multistage pumps are:
Mine dewatering - Ensure efficient and reliable water removal with these robust pumps.
High density living - Maintain steady water pressure for urban residential complexes.
Snow making - Create winter wonderlands with precision and high performance.
Boiler feed systems - Support efficient energy production with reliable water supply.
Reverse Osmosis - Achieve superior water purification with high-pressure capabilities.
Industrial applications - Cater to a diverse range of industrial needs with unmatched efficiency.
Condensate - Manage condensate systems smoothly with consistent pump performance.
High pressure cleaning/wash down facilities - Deliver powerful and thorough cleaning solutions.
Jacking pumps for fire hydrant systems - Provide vital safety by ensuring robust fire safety measures.
Irrigation and fire hose feed supply - Support agricultural and fire protection needs with reliable flow.
Showers - Enhance shower experiences with steady and invigorating water pressure.
Co generation - Facilitate combined heat and power systems with exceptional water delivery.
Spray - Achieve uniform and precise spraying applications with ease.
Pressure Boosting - Elevate water pressure to meet demanding applications effortlessly.

Facilities & Equipments

FAQ

A. What are the multi stage pump parts?
The multistage pump parts are very similar to those of the standard Centrifugal pump except for the Multistage Centrifugal pump where the additional parts are diffusers which efficiently channel the fluid into the eye of the impeller or to the following stage. In the side channel pump, there are intermediate plates with the scalloped side channel and liquid parts.
In multistage centrifugal pumps, because of the high thrust that is generated due to the impellers facing in the same direction, there will be a thrust balance device i.e balance disc or balance drum which reduces the thrust to a level which can be managed by a standard sized thrust bearing.

B. How does a multi stage pump work?
A multistage pump operates by one impeller feeding into the next impeller and the number of impellers required depend on the discharge pressure requirement. Liquid enters the pump and then passes through the various number of impellers in a sequence from the left to right.

C. What are the applications and uses for multi stage pumps?
The applications for multi stage pumps are many and varied and can be used for delivering water to high rise buildings, reverse osmosis (RO), boiler feed water, spraying, high pressure cleaning, water works, heating, condensate, fuel delivery, oil and gas production, power generation & mining and other high pressure and temperature applications..

D. What are the different types of multi stage pumps?
Types of multistage pumps include;
Horizontal Multistage Centrifugal pump (above ground)
Vertical Multistage Centrifugal pump (above ground)
Submersible/Sump pump types
Side Channel pump
Combination pumps i.e Centrifugal low NPSH first stage with side channel additional stage.
Horizontal split case pump
Vertical Turbine pump
Sanitary Multistage pump

E. What are the advantages of using a multi stage pump?
If we were to compare the Centrifugal multi stage pump to a high pressure duty pump - the Centrifugal multi stage pump even though it is more complex and costly, it would probably be a better hydraulic fit, have a better efficiency and be more reliable. With its hydraulic modules, the ability to supply additional impellers and its ability to trim those impellers, the duty point can me met exactly without compromise. The selection is more likely to be close to 'BEP' and will run efficiently and reliably.
Multi stage pumps can be configured to have an interstage bleed off if there are multiple duty points required. It may be possible to run a multistage pump at a lower speed than a single stage centrifugal pump which may offer an efficiency advantage but it will certainly run much quieter which is an important consideration in today's world. A 3 dBA increase represents a doubling of sound as the sound scale is logarithmic.

F. What is difference between a single stage and a multi stage pump?
A single stage pump uses one impeller whereas a multi stage pump uses 2 or more impellers (some manufacturers use 80 or more impellers).
There are additional components in a multi stage pump which are required for channelling the fluid from the first stage to the following stage i.e diffusers.
Multi stage pumps have a thrust balance device and there may also be intermediate bearings (lubricated by the pumpage) to steady the shaft plus other minor differences.

G. How do you read a multistage pump curve?
You read a multi stage pump curve in exactly the same way as you read any other pump type curve however some manufacturers will publish single stage curves which means that this has to be multiplied out to establish the number of stages required, however be aware that the side channel pumps have their maximum power at zero flow and the power decreases with increasing flow which is the reverse of a centrifugal pump.

H. What is the difference between a vertical multistage pump and a horizontal multistage pump?
The main differences between a vertical multi stage pump and a horizontal multi stage pump are;
1.The orientation of the pump
2.The vertical multi stage pump is above ground and may be used where there are space limitations however the motor needs to be removed before maintenance can be performed.
3.Vertical multi stage pumps are used in some applications where the motor needs to be lifted from the sump so that the unit can be maintained. It is common in vertical pumps for the thrust load to be taken by the motor e.g. VTP turbine pumps which have electric motors specifically designed for this type of pump to eliminate the need for a thrust bearing in the pump resulting in less complexity and costs. VTP pumps can be produced with column lengths of more than 100 metres.
4.Horizontal multi stage pumps are mounted using feet which for high temperature applications are a special design to allow for thermal growth and thus avoid operating issues due to expansion and contraction. They would need to be aligned with the electric motor. On vertical pumps, the mounting is perhaps simpler i.e for sump pumps, a support plate would be fixed with standard bolting and generally no alignment is required as the motor is flanged and it is self aligning with the corresponding register.

I. Which type of multistage pump is more commonly used in industry?
The most common type of multi stage pump used in Industry is the horizontal multi stage pump and vertical multi stage pump (above ground) mounted centrifugal pumps. However, multi stage side channel pumps would also be relatively common along with the vertical turbine pumps.

SEMHAI can offer a full range of Flowserve's Multi stage pumps.We provide localised technical support & on-site service engineering to support your operational needs.