IHF Fluoroplastic Chemical Pump
Widely applicable in automotive manufacturing for pickling and painting processes; for electrolyte transfer in non-ferrous metal smelting; and in ion-exchange membrane caustic soda projects for ammonia water, wastewater treatment, and acid addition processes. Design Features: The IHF series is constructed with HT250 cast iron lined with F46, capable of bearing partial pipeline gravity loads. All wetted components are tightly lined with fluoroplastic, while the pump’s load-bearing sections are made of cast gray iron. Equipped with externally mounted bellows mechanical seals. Wear-resistant pairings: silicon carbide vs. PTFE, or cemented carbide vs. cemented carbide. Wear surfaces can be selected based on specific operating conditions.
Scope of Application
Widely applicable in automotive manufacturing for pickling and painting processes; for electrolyte transfer in non-ferrous metal smelting; and in ion-exchange membrane caustic soda projects for ammonia water, wastewater treatment, and acid addition processes. Design features: The IHF series is constructed with HT250 lined with F46, capable of bearing partial pipeline gravity. All wetted components are tightly lined with fluoroplastic, while the pump’s load-bearing sections are cast gray iron. Configured with externally mounted bellows mechanical seals. Wear-pairing materials: silicon carbide vs. PTFE, or cemented carbide vs. cemented carbide. Wear surfaces can be selected based on specific operating conditions. Impellers are integrally molded from fluoroplastic, with steel inserts encapsulated within the fluoroplastic to ensure structural integrity during rotation. Can be configured with API partial flushing solutions.
Lined Pump Housing
High-temperature annealing prevents cracking
Flow-through components manufactured using new processes feature high surface finish and excellent transparency. This not only enhances the adhesion of the fluoropolymer lining but also prevents cracking and deformation, extending the pump body’s service life to at least 5 years.
Pigment-free pure raw materials, Material options: PFA/PVDF/ETFE/FEP (select based on requirements)
“Solid plastic holes” and “dovetail grooves” design with densified casting points ensure permanent lining adhesion
FEP (F46) molded for thickness of 5-12mm, withstanding temperatures from -20 to 100°C and corrosion from any medium.
The IHF single-stage, single-suction chemical centrifugal pump lined with fluoroplastic, polypropylene, and other materials (referred to as the IHF centrifugal pump) is designed according to international standards and incorporates non-metallic pump manufacturing techniques. It utilizes a turtle-shell mesh lining technology, offering advantages over comparable pumps such as enhanced lining adhesion and crack resistance. The pump body features a metal shell lined with materials such as polyfluoroethylene propylene (F46), polyvinylidene fluoride (PVF2), or polypropylene (PP). The pump cover, impeller, and shaft sleeve are integrally sintered and pressed with fluoroplastic-coated metal inserts. An externally mounted mechanical seal provides reliable sealing performance. Both the inlet and outlet are reinforced with cast steel bodies to enhance pressure resistance. Practical application demonstrates that this pump offers corrosion resistance, temperature tolerance, non-aging properties, high mechanical strength, smooth operation, an advanced and rational structure, tight and reliable sealing performance, convenient disassembly and maintenance, and a long service life. Compared to all-plastic corrosion-resistant pumps made of the same material, it further excels in creep resistance, installation performance, and resistance to thermal deformation.
This pump series offers a comprehensive range of 150 specifications, leading the industry. Its flow rate spans from 3 to 1000 m³/h, with an operating temperature range of -20 to 110°C. It is currently widely used in: transporting corrosive media in chemical production, delivering electrolytes in non-ferrous metal smelting, and across numerous industries including pharmaceuticals, petroleum, power generation, electroplating, dyes, pesticides, papermaking, food processing, textiles, metallurgy, titanium dioxide production, salt chemical processing, and potash compound fertilizers. It can reliably transport highly corrosive media such as sulfuric acid, hydrochloric acid, hydrofluoric acid, nitric acid, aqua regia, strong alkalis, strong oxidizing agents, organic solvents, and reducing agents at any concentration without damage. This makes it one of the most popular pump types among users today.
Flow Range: 3.6–1000 m³/h
Head Range: 5–90 m
Power Range: 1.1–160 kW
Temperature Range: -20°C to 160°C
Installation Notes:
Install valves and rubber expansion joints (pipe compensators) sequentially at the pump inlet and outlet to facilitate maintenance.
2. During pump installation, first connect the inlet and outlet pipe bolts, then tighten the mounting foot bolts. This prevents tensile stress on the pump during pipe connection, which could damage the unit.
3. For installations with long (elevated) discharge piping, install a check valve at the outlet to prevent water hammer damage during shutdown.
4. Pump inlet/outlet piping configuration: To minimize flow resistance and maximize delivery efficiency, the piping size should be one size larger than the pump inlet/outlet.1. Install valves and rubber expansion joints (pipe compensators) sequentially at the pump inlet and outlet to facilitate maintenance.
Slot Installation Diagram and Precautions
High-level tank under positive pressure
Feature Description: The pump is installed at the bottom of the storage tank, where the medium is under positive pressure. When the valve at the pump inlet is opened, the liquid in the tank flows freely into the pump chamber. This represents the ideal installation method for the IHF series steel-lined fluoroplastic chemical pumps.
High-level tank under negative pressure
Features: The pump is installed at the bottom of the storage tank, which is sealed and maintained under negative pressure. When selecting a pump for this configuration, it is essential to determine the precise negative pressure data within the storage tank before contacting our company to finalize the model selection.
Low-level tank without bottom valve, equipped with siphon bucket
Features: The pump is installed at the top of the storage tank. A siphon bucket is installed on the inlet pipe near the pump inlet to assist with startup. Before the first pump startup, the siphon bucket must be filled with liquid; subsequent fillings are unnecessary. The siphon bucket can be fabricated using materials and manufacturing processes suitable for the specific properties of the medium. The key requirement for the siphon bucket is excellent sealing to prevent leakage of liquid or air. The calculation method for the siphon bucket size is as follows: V = (3–5) × πd² × L/4 where: d: Inlet pipe diameter L: Total length of inlet pipe V: Siphon bucket volume Based on the calculated volume and available material dimensions, determine the siphon bucket’s diameter and height.
Low-level tank bottom valve status
Features: The pump is installed at the top of the storage tank. A foot valve must be installed at the bottom of the inlet pipe. Before each pump start-up, the pump chamber must be filled with liquid; never run the pump dry. Under normal circumstances, the IHF series steel-lined fluoroplastic chemical pumps are not recommended for use in such applications.
1. Pre-Operation Checks
Before trial operation, manually rotate the coupling or shaft to verify correct rotation direction and smooth operation. If rotation is impossible or abnormal noises occur, inspect immediately. Begin with external checks: ensure the coupling is level. Through the oil sight glass on the bearing housing, verify the lubricant level is near the centerline of the sight glass (drain excess oil or add more if levels are low). Continue checking while rotating. If issues persist, disassemble the pump for inspection (refer to the structural diagram and disassembly procedure in this manual), remove foreign objects, and contact our company to discuss solutions. Simultaneously verify that cooling water is supplied to the external cooling system.
2. Startup Procedure
a. Fill the pump with liquid
b. Open the inlet valve promptly
c. Connect the power supply
d. Open the outlet valve
3. Operation If abnormal noises occur during operation, or if the motor overheats or other irregularities arise, the machine should also be shut down for inspection. The inspection method and steps are the same as in Section 1.
4. Shutdown a. First close the outlet valve; b. Disconnect the power supply and promptly close the inlet valve;
5. Lubrication Protection for Bearing Housings Lubricating oil (40# diesel engine oil) in the bearing housings should be replaced regularly, typically every six months of operation. The oil level should reach the centerline of the sight glass (see figure below). An oil level that is too low will not provide adequate lubrication, while an excessively high level increases shaft power consumption load.
Contact Us
Briefly describe what the form is for or provide additional context if required. Use inviting language.