This stainless steel centrifugal pump adopts stainless steel stamping, stretching, and welding technology, combined with a direct-coupled compact structure and silicon carbide mechanical seals, ensuring high efficiency, low noise, and stable long-term continuous operation.
It effectively solves the common problems of traditional cast-iron centrifugal pumps, such as corrosion, leakage, media contamination, frequent maintenance, and high energy consumption, making it especially suitable for applications requiring hygiene, operational stability, and mild corrosion resistance.
It is widely used in water treatment and transfer, industrial process boosting, boiler feedwater, cooling and circulation systems, mild acid and alkali liquid transfer, agricultural irrigation, and medical & sanitary applications.
Significant Energy Savings: Stamping/stretching optimized flow passages + high-efficiency motor matching achieve ≥76% rated efficiency. Combined with VFD on-demand regulation, annual electricity costs drop by 15%–25%.
Lower Maintenance Costs: Pump-shaft direct-coupled zero-alignment design + back-pull-out inspection structure enables seal/impeller maintenance without disconnecting inlet/outlet piping. Single technician completes routine maintenance within 1 hour, reducing labor costs by 50%.
Lightweight & Compact Design: Stainless steel stamping process eliminates heavy cast baseplate. Overall weight reduced by ~25% for equivalent flow/head ratings, lowering floor load & lifting complexity.
Faster Installation: Horizontal suction/vertical discharge + pre-aligned flanges enable zero-cutting pipe connection on-site. Standard units reach commissioning readiness within 1.5 hours from unboxing, compressing installation cycle by 45%.
Water Supply Systems: Suitable for water treatment transfer, regional water supply, and pipeline boosting to ensure stable water delivery.
Industrial Boosting: Ideal for process water supply, cleaning systems, and circulation boosting while reducing system energy consumption.
Industrial Liquid Transfer: Widely used in boiler feedwater, condensation circulation, cooling & HVAC systems, and mild acid/alkali liquid transfer.
Water Treatment Systems: Suitable for filtration, distillation, separation, and swimming pool circulation systems.
Other Applications: Agricultural irrigation, medical & sanitary systems, and clean liquid transfer in food & beverage industries.
Suitable Media: Designed for clean, low-viscosity, non-flammable, and non-explosive liquids free of solid particles and fibers. Liquid temperature range: -20℃ to +100℃, system pressure ≤10 bar.
Performance Curve
Outline Drawing and Component List | |||
| NO. | Part Name | Material | AISI/ASTM |
| 1 | 电机 | ||
| 2 | 泵头 | 铸铁HT200 | ASTM25B |
| 3 | 防护板 | 不锈钢0Cr18Ni9 | AISI304 |
| 4 | 泵轴 | 不锈钢2Cr13/0Cr18Ni9 | AISI420/AISI304 |
| 5 | 橡胶零件 | 丁腈橡胶NBR | |
| 6 | 泵头衬里 | 不锈钢0Cr18Ni9 | AISI304 |
| 7 | 机械密封 | 石墨/碳化硅 | |
| 8 | 叶轮 | 不锈钢0Cr18Ni9 | AISI304 |
| 9 | 泵体 | 不锈钢0Cr18Ni9 | AISI304 |
| 10 | 底座 | 钢Q235 | ASTMA570 |
| NO. | Pump Model | Flow Rate (m³/h) | Head (m) | Speed (rpm) | Standard Motor Voltage [V] | |
| 1×220V | 3×380V | |||||
| P₂ [kW] | P₂ [kW] | |||||
| 1 | ZS50-32-160/1.1 | 6.3 | 18 |
2900 | 1.1 | 1.1 |
| 2 | ZS50-32-160/1.5 | 12.5 | 20 | 1.5 | 1.5 | |
| 3 | ZS50-32-160/2.2 | 12.5 | 25 | 2.2 | 2.2 | |
| 4 | ZS50-32-200/3.0 | 12.5 | 32 | 3 | ||
| 5 | ZS50-32-200/4.0 | 12.5 | 42 | 4 | ||
| 6 | ZS50-32-200/5.5 | 12.5 | 54 | 5.5 | ||
| 7 | ZS65-40-125/1.5 | 25 | 13 | 1.5 | 1.5 | |
| 8 | ZS65-40-125/2.2 | 25 | 18 | 2.2 | 2.2 | |
| 9 | ZS65-40-125/3.0 | 25 | 24 | 3 | ||
| 10 | ZS65-40-160/4.0 | 25 | 28 | 4 | ||
| 11 | ZS65-40-200/5.5 | 25 | 36 | 5.5 | ||
| 12 | ZS65-40-200/7.5 | 25 | 46 | 7.5 | ||
| 13 | ZS65-40-200/11.0 | 25 | 62 | 2950 | 11 | |
| 14 | ZS65-50-125/3.0 | 50 | 13 |
2900 | 3 | |
| 15 | ZS65-50-125/4.0 | 50 | 18 | 4 | ||
| 16 | ZS65-50-160/5.5 | 50 | 25 | 5.5 | ||
| 17 | ZS65-50-200/7.5 | 50 | 32 | 7.5 | ||
| 18 | ZS65-50-200/9.2 | 50 | 40 | 9.2 | ||
| 19 | ZS65-50-200/11.0 | 50 | 48 | 2950 | 11 | |
| 20 | ZS65-50-200/15.0 | 50 | 58 | 15 | ||
| 21 | ZS65-50-200/18.5 | 50 | 68 | 18.5 | ||
| 22 | ZS80-65-125/5.5 | 100 | 13 | 2900 | 5.5 | |
| 23 | ZS80-65-125/7.5 | 100 | 18 | 7.5 | ||
| 24 | ZS80-65-125/9.2 | 100 | 23 | 9.2 | ||
| 25 | ZS80-65-160/11.0 | 100 | 27 |
2950 | 11 | |
| 26 | ZS80-65-160/15.0 | 100 | 36 | 15 | ||
| 27 | ZS80-65-200/18.5 | 100 | 45 | 18.5 | ||
| 28 | ZS80-65-200/22.0 | 100 | 53 | 22 | ||
| 29 | ZS80-65-200/30.0 | 100 | 66 | 30 | ||
| 30 | ZS100-80-160/11.0 | 160 | 15 | 11 | ||
| 31 | ZS100-80-160/15.0 | 160 | 22 | 15 | ||
| 32 | ZS100-80-160/18.5 | 160 | 28 | 18.5 | ||
| 33 | ZS100-80-200/22.0 | 160 | 33 | 22 | ||
| 34 | ZS100-80-200/30.0 | 160 | 45 | 30 | ||
| 35 | ZS100-80-200/37.0 | 160 | 54 | 37 | ||
For more information, please contact us or download the PDF brochure.
Media Requirements • Media Type: Clean, low-viscosity, non-flammable and non-explosive liquids • Solid Content: Free of solid particles and fibers • pH Range: 4–10 (304 SS); 2–12 (316 SS)
Temperature Limits • Media Temperature: -20°C to +100°C (-4°F to 212°F) • Ambient Temperature: ≤40°C (≤104°F)
System Limits • Max. Working Pressure: ≤10 bar (≤145 psi) • Installation: Horizontal mounting, horizontal suction / vertical discharge
Environmental Limits • Altitude: ≤1000 m (≤3280 ft) • Relative Humidity: ≤95% (non-condensing) • Installation Environment: Ventilated and frost-proof; protective cover required for outdoor installation
Electrical Limits • Power Supply: Single-phase 220 V/50 Hz or Three-phase 380 V/50 Hz • Motor Type: Totally enclosed, fan-cooled (TEFC), 2-pole standard motor • Protection Rating: IP55 • Insulation Class: Class F
Note: For special operating conditions (high corrosion / high solid content / high altitude / explosion-proof requirements), please consult us before selection. Customized solutions are available.
National Standard Compliance: Strictly manufactured per GB/T 5657-2013 “Centrifugal pumps technical conditions (Class III)”. Hydraulic performance & mechanical safety 100% compliant. Third-party full performance curve test reports available.
Food Hygiene Compliance: 304/316 stainless steel wetted parts passed drinking water safety evaluation & FDA food-contact material certification, compliant with GB 4806.9-2016, suitable for food/pharmaceutical clean conditions.
International Quality System: ISO 9001:2015 certified. Core pressure-bearing components evaluated per CE/PED 2014/68/EU, meeting EU/US market entry requirements.
Factory Inspection Standard: Every unit undergoes 1.5× rated pressure hydrostatic test (5-min hold) + ISO 1940 G2.5 dynamic balance calibration + mechanical seal leakage test (<0.01 mL/h), guaranteeing zero-leakage delivery.
Fast Standard Delivery: Covers flow 1–200 m³/h, head 5–100 m. Standard 304/316 stainless steel + silicon carbide seals + IP55 motors. Technical confirmation & sample prototyping within 72 hours.
Deep Customization Capabilities:
Material Upgrade: Wetted parts optional in 2205 duplex steel/titanium alloy/PTFE-lined for strong acids/alkalis, high-chloride, or ultra-pure media conditions.
Seals & Motors: Optional high-temp mechanical seals (up to 120℃), explosion-proof motors (Ex d IIB T4), IE4 ultra-efficiency or VFD-dedicated drives.
Structural Adaptation: Flange standard switching (GB/ANSI/DIN/JIS), reinforced base, pre-installed flexible joints, outdoor rain/soundproof canopy customization.
Intelligent Expansion: Pre-wired interfaces for pressure/temperature/dry-run sensors; supports integration with VFD cabinets, IoT remote monitoring, multi-pump rotation modules.
Please contact us for customization inquiries. Our engineering team delivers process proposals within 48 hours.
Pre-Installation Checks: Verify foundation flatness ≤2 mm/m, maintain ≥400 mm clearance. Confirm media temp -20℃ to +100℃, no solids/fibers. Ambient temp ≤40℃, altitude ≤1000 m, humidity ≤95% (non-condensing). Outdoor installation requires protective cover.
Installation Key Points:
1.Mount pump horizontally on solid base. Tighten anchor bolts symmetrically. Ensure shaft horizontal deviation ≤0.05 mm/m to prevent premature bearing wear from uneven loading.
2.Connect inlet/outlet with flexible rubber joints. Never transmit pipe stress to pump body. Provide independent supports for inlet/outlet piping.
3.Motor junction box faces outward. Secure cable in conduit. Grounding resistance ≤4 Ω. Electrical wiring must ensure phase-loss/voltage instability/leakage/overload protection functions properly.
4.Before initial startup, manually rotate shaft 3 turns to confirm smooth, friction-free rotation. Prime pump & vent air. Jog test to verify rotation (clockwise from motor end).
Commissioning Process: Prime & vent → Jog test for direction → No-load run 5 min → Slowly open discharge valve to rated duty → Record current/pressure/vibration/bearing temp data → Acceptance.
Request the “ZS Stainless Steel Horizontal Single-Stage Centrifugal Pump Installation & Maintenance Manual” (PDF/English version) for complete dimensional drawings, flange specs, and commissioning logs.
Q1: How does stainless steel stamping process improve pump corrosion resistance?
304/316 stainless steel plates undergo stamping/stretching/welding. Weld seams are electropolished (Ra ≤0.8 μm), eliminating casting sand holes/blowholes. Combined with fully enclosed flow passage design, completely blocking corrosion/leakage paths.
Q2: How does pump-shaft direct-coupling ensure “zero alignment adjustment”?
Factory laser precision alignment (runout ≤0.03 mm) completed. Combined with short-span rigid shaft system, on-site installation only requires leveling & fixing base—no secondary pump-motor coaxiality calibration needed.
Q3: How do silicon carbide mechanical seals achieve leakage rate <0.01 mL/h?
Dual-face series layout + oil-chamber lubrication/cooling. SiC mating faces precision ≤0.001 mm, combined with spring constant-pressure compensation. Tested leakage rate <0.01 mL/h, meeting clean workshop requirements.
Q4: What preparations are needed for startup in low-temperature conditions (-20℃)?
Standard suits -20℃ to +100℃. For <-10℃, recommend: ① Low-temp mechanical seals (FKM O-rings); ② Pump body insulation jacket; ③ Pre-heat media to >0℃ before startup.
Q5: How to configure protective cover for outdoor installation?
Standard IP55 protection motor. Outdoor installation requires rain/sun/condensation-proof cover to keep electrical components dry & ventilated, upgrading protection to IP65, adapting to -20℃ to +40℃ environment.
