Cast Iron Horizontal End-Suction Pump with External Cooling Mechanical Seal

• Customization: Available
• After-sales Service: Online After-Sale Service
• Warranty: 12 Months
• Model NO.: SLZ150-100-400
• Max.Head: 110m-150m
• Max.Capacity: >400 L/min
• Driving Type: Motor
• Impeller Number: Single-Stage Pump
• Working Pressure: Middle 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, Slurry Pump, Circulating Pump
• Material: Cast Iron, Stainless Steel, Bronze
• Driver: Explosion-Proof Electric Motor
• Seal: Mechanical Seal with Cooling System
• Coupling: Flexible Pins/Disc
• Transport Package: Plywood Case
• Specification: 1800*900*1400mm
• Trademark: SEMHAI or OEM
• Origin: China
• HS Code: 8413709990
• Production Capacity: 1000000sets/Year

Product Description

Product Description

The SLZ end suction, long coupled, single stage centrifugal chemical process pump is ingeniously standardized to EN 22858 / ISO 2858, making it a versatile powerhouse suitable for a broad spectrum of industrial and marine market applications. Engineered with precision, it efficiently handles low viscosity clean or slightly contaminated fluids, provided they are free from solid or fibrous debris. From fresh water to sea water, and fuels like diesel, petrol, and kerosene, this pump is adept at diverse tasks such as fuel transfer, chemical processing, energy plant operations, mining, fire fighting, irrigation, water supply, water treatment, pressurization, gray water management, dewatering, and marine applications.

This robust centrifugal chemical process pump stands out with its impressive high flow and high pressure capabilities, ideal for heavy-duty operations.
The meticulous design of this long coupled centrifugal chemical process pump unveils a myriad of advantages.
Experience the simplicity of maintenance with the long coupled configuration, allowing hassle-free access to the pump head without the need to detach the motor.
Constructed for relentless performance, this process pump boasts durability with additional bearings in the pump head, significantly alleviating the operational strain on the motor.
Featuring a clever back pull out design, this pump enables swift motor removal while remaining connected to the pipework, thus enhancing efficiency during service and maintenance.
With separate shafts for the pump and motor, the centrifugal chemical process pump ensures that only the pump shaft requires replacement if damaged, contrasting with less durable models where a motor shaft failure demands a full motor replacement.
The innovative long-coupled design creates a generous space between pump and motor, safeguarding the motor from fluid intrusion in case of seal failure.

Product summary
• Capable of pumping an extensive range of clean, low viscosity, or slightly contaminated fluids
• Available options include closed or semi-open impeller
• Back pull out design ensures swift and uncomplicated maintenance
• Designed to handle maximum fluid temperatures up to 175°C
• Heavy-duty shaft, ingeniously designed to avoid contact with the fluid
• Enhanced with an external seal cooling system for optimal performance
• Distinct, independent shafts for both pump and motor
• Available in resilient materials including cast iron, 316 stainless steel, duplex stainless steel, bronze, and others upon request
• Suction and discharge flanges are in compliance with EN 1092-2 / PN 16, and EN 1092-1 / PN 16 for steel and stainless steel casings
• Diverse sealing options such as gland packing, single, double, and cartridge mechanical seals available
• Equipped with three-phase 50hz / 60hz motors, IP55 as standard offering
• ATEX-compliant version available upon request, ensuring safety in hazardous environments
• Independent certification can be provided to meet specific requirements
• Manufactured in strict accordance with EN 22858 / ISO 2858 standards
• Features a low NPSH for enhanced operational efficiency
• Allows for assembly without alignment complications
• All impellers are precisely balanced in accordance with ISO 1940 class 6.3
• Long coupled design complemented with a sturdy baseplate
• Option to install an API Seal, adhering to API682 standards
• Equipped with oil-lubricated ball bearings for smooth operation

Pump Type	Centrifugal
Max Flow Rate	1500M³H
Max Head	160M
Max Temp	175°C
Max Viscosity	200 cst
Max Solid Passage	20mm
Self Priming	N
Inlet/Outlet Sizes	32mm to 250mm
Mechanical seal type	Double mechanical seal, API plan
Pump Materials	AISI304, AISI316, AISI316L, Bronze, Cast Iron, Cast Steel, Ductile Iron, Duplex, NiAl Bronze, Super Duplex

Detailed Photos

Our centrifugal pumps, including chemical pumps, are equipped with renowned brand bearings, ensuring exceptional durability and extended service life even in the most challenging environments.

To expertly balance axial thrust, most of our impellers feature wear rings at both the front and back, complemented by a balance hole on the impeller's back shroud. However, in some pumps where axial thrust is minimal, the wear ring and balance hole at the back may not be necessary.

The high-precision casting of our impellers guarantees exceptional performance, available in materials such as cast iron, stainless steel, and bronze.

Our products can be categorized into two main groups:
1) "Flush" - A clean, cool liquid is injected into the seal chamber, optimizing the operating environment. A secondary, smaller port, typically oriented downward, serves as a leakage observation or vent opening, ensuring superior functionality.
2) "Barrier or Buffer" for dual seals - This method introduces a secondary fluid into the space between two sets of mechanical seals, preventing ambient air contact with the pumped fluid, enhancing seal cooling, and boosting overall safety.
Notably, not all mechanical seals require special external flush arrangements, highlighting the adaptability of our design.

Flexible couplings
Designed to accommodate movement, such as vibrations and thermal expansion, flexible couplings are ideal for applications with unavoidable misalignment between drive and pump shafts. Their ability to absorb vibrations also helps reduce operating noise. Despite their complex and costly design, these couplings protect shafts and bearings from damage and premature wear, offering maintenance savings over time.
Semhai's API standard chemical pumps are equipped with API 671 Standard Disc Couplings, reflecting our commitment to excellence.
These couplings offer lower reaction loads and superior balancing quality compared to standard couplings, enhancing the overall efficiency and effectiveness of the entire pump power transmission system.

Product Application

Industry	Services
Chemicals, dyes & intermediates	Organic/inorganic chemicals
Oil extraction & waste oil refineries	Hydrocarbons/Volatile liquids
Bulk drugs & Pharmaceuticals	Dyes & Intermediates
Effluent treatment plants	Water treatment & distribution system
Heating & air conditioning plants	Thermic fluid/ hot oil
Cooling towers	Corrosive/abbrasive liquids

Facilities & Equipments

Professional Cooperation Agencies
Shanghai Semhai Pump Co., Ltd. has forged prestigious and enduring alliances with some of the nation's most esteemed pump-testing institutions, ensuring top-tier standards and reliability for our Cast Iron Horizontal End-Suction Pump with External Cooling Mechanical Seal. These collaborations include:
The renowned National Quality Supervision and Inspection Center of Industrial Pumps located in Tiexi District, Shenyang City,
The esteemed Irrigation Machinery Products Quality Inspection Center of Machinery Industrial situated in Zhenjiang City,
The distinguished Ministry of Agriculture, Water Pump Quality Supervision and Testing Center based in Chongqing City,
And the prestigious Shanghai Mechanical and Electrical Products Quality Inspection Center located in the vibrant city of Shanghai.