Stainless Steel Self-Priming Pump
Industrial Stainless Steel Self-Priming Pump
Product Overview & Technical Specs
Engineered for industrial fluid systems requiring dry-lift capability and corrosion resistance. Built from stamped or investment-cast stainless steel to withstand aggressive media without structural degradation.
|
Parameter |
Specification Range |
|
Flow Rate (Q) |
2.5 to 120 m3/h (11 to 530 US GPM) |
|
Head (TDH) |
Up to 65 meters (213 ft) |
|
Max Suction Lift |
5.5 to 6.5 meters (18 to 21 ft) |
|
Fluid Temperature |
-20°C to +120°C (-4°F to +248°F) |
|
Material Options |
AISI 304, AISI 316, AISI 316L (Investment Cast) |
|
Shaft Seal |
Single/Double Mechanical Seal (SiC / Carbon / Viton) |
Product Selection & Sizing Matrix
Match your operating duty point using the standardized performance tiers below.
Series SSP-304 (General Industrial): Standard stamp-welded AISI 304 construction. Applied in water treatment, general chemical transfer, and washing skids where mild corrosives are present. pH tolerance: 4-9.
Series SSP-316 (Chemical & Marine): Precision investment-cast AISI 316. Utilized for chemical processing, acid/alkali circulation, and saline water environments. Resists pitting corrosion up to 1000 ppm chloride at ambient temperatures.
Series SSP-Sanitary (Food & Pharma): Electro-polished AISI 316L wetted parts (Ra <= 0.4 um). Built with tri-clamp connections and CIP (Clean-In-Place) compatibility for beverage and pharmaceutical ingredient transfer.
Operating Principle & Application Scope
How the Self-Priming Mechanism Works
• Evacuation Phase: Upon initial startup, the rotating impeller drives air out of the suction line, mixing it with the liquid retained in the internal priming chamber.
• Separation Phase: The air-liquid mixture separates in the volute casing. Air is discharged through the discharge port, while heavier liquid drops back down to recirculate.
• Pumping Phase: Once complete air evacuation occurs, a continuous vacuum is established in the suction line, initiating normal centrifugal pumping action without requiring a foot valve.
Verified Industrial Applications
• Chemical Processing: Transfer of dilute sulfuric acid, sodium hydroxide, and solvents within secondary containment limits.
• Wastewater & Effluent: Pumping industrial plant drainage containing entrained air or gas-laden effluent.
• Marine Systems: Bilge stripping, ballast transfer, and deck washdown services.
• OEM Skid Integration: Integrated into mobile filtration units, CIP skids, and agricultural irrigation systems.
Manufacturing & Quality Verification
Reliability starts at the metallurgical level. Our production lines maintain strict traceability from raw material ingots to final hydrostatic testing.
Material Traceability: Mill Test Certificates (MTC) supplied per EN 10204 3.1 for all pressure-containing stainless steel components. PMI (Positive Material Identification) testing conducted prior to machining.
Machining Precision: Volutes and impellers machined on 5-axis CNC horizontal machining centers, holding dimensional tolerances within +/-0.02 mm to eliminate hydraulic turbulence and efficiency losses.
Immobilized Testing: Every assembled pump undergoes a 30-minute performance test recording flow, head, power consumption, and NPSH compliance in accordance with ISO 9906 Grade 3B standards.
Leak Detection: Mechanical seal assemblies tested via helium mass spectrometer or pneumatic pressure drop testing before final paint/passivation.
Procurement & Supply Chain Parameters
Minimum Order Quantity (MOQ): 1 unit for standard catalog models; 10 units for custom OEM branding or motor voltage configurations.
Standard Lead Time: 15 to 25 business days for ex-stock configurations; 35 to 45 business days for special alloy or customized flange drillings (ANSI B16.5 / DIN PN16).
Packaging Specification: Fumigation-free plywood crates compliant with ISPM 15 standards, secured with internal moisture-barrier vapor bags and silica gel packs for ocean freight protection.
Warranty Terms: 18 months from shipment date or 12 months from operational commissioning, whichever occurs first.
Frequently Asked Questions
Q: Does the pump require liquid in the casing before every startup?
A: No. Once the initial priming charge is filled into the casing during first-time installation, the internal recirculation chamber retains enough liquid to re-prime automatically on subsequent starts, even after complete drainage of the suction line.
Q: What is the maximum dry suction lift achievable at sea level?
A: Standard models achieve a maximum dry suction lift of 6.0 meters (19.7 ft) of water at 20°C. For liquids with higher vapor pressure or specific gravity greater than 1.0, suction lift must be recalculated using the NPSHa formula.
Q: Can this pump handle fluids containing suspended solids?
A: Semi-open impeller designs can pass soft suspended solids up to 6 mm to 10 mm in diameter depending on the pump size. Heavy abrasive slurries require hardened silicon carbide wear plates and specialized mechanical seal flushing plans.
Q: What mechanical seal face combinations are standard for chemical duties?
A: Silicon Carbide vs. Silicon Carbide (SiC/SiC) paired with Viton (FKM) elastomers is standard for general industrial chemicals and hydrocarbons. EPDM or Kalrez elastomers are available upon request for specific acid/solvent compatibility.
Q: Are explosion-proof motors available for hazardous zone installations?
A: Yes. Motors can be supplied with ATEX (Zone 1 / Zone 2) or Class I, Division 1 / Division 2 (UL/CSA) certifications, coupled with cast iron or stainless steel terminal enclosures.
Q: What technical documentation is included with the shipment?
A: Each pump shipment includes the Operation and Maintenance Manual (OMM), individual ISO 9906 test report, material certificates (EN 10204 3.1), 2D/3D CAD step files, and a recommended spare parts list (RSPL) for 2 years of operation.
Request a Technical Quote (RFQ)
Provide your application parameters (Flow Rate, TDH, Fluid Type, Specific Gravity, Temperature, and Power Supply) to receive an engineered selection sheet and formal quotation within 24 hours.
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