Shinjo Pump manufactures centrifugal pumps in China with flow range 1–1,400 m³/h and head up to 130 m. ISO 15783 / API compliant. 100% performance tested before shipment. Request a quote →
- In-house manufacturing + CFD design: Casting, CNC machining, welding, heat treatment, and testing all under one roof. Every impeller optimized with Computational Fluid Dynamics.
- 100% performance tested: Flow, head, power, efficiency, vibration, and noise — test reports issued with each shipment.
- IHF Fluorine Plastic Lining Pump: PTFE-lined for sulfuric acid, HCl, caustic solutions.
- GBW Concentrated Sulfuric Acid Pump: High-concentration H₂SO₄ at elevated temperatures.
- FS GFRP Pump: Seawater, brine, chemical wastewater — lightweight & corrosion-resistant.
- PBG Canned Motor Pump: 6.3–1,080 m³/h. Seal-less, zero leakage for hazardous fluids.
- ISG Pipeline Pump: Up to 1,300 m³/h. Inline design for water supply and circulation.
- IS Clean Water Pump: 5–400 m³/h. Water supply, irrigation, industrial circulation.
- IR Hot Water Pump: Heating systems and thermal circulation loops.
- ISW Inline Pump: 1–1,200 m³/h. Building and facility water transfer.
- Stainless Steel Inline Pump: 2–1,400 m³/h, 10–80 m head. Food, pharma, chemical.
- LX Spiral Pump: 90–1,400 m³/h. Sewage, slurry, fibrous and particulate fluids.
| Material | Best For |
|---|---|
| Cast Iron (HT200/HT250) | Clean water — most economical |
| Stainless Steel (304/316/316L) | Mild corrosive, food-grade, pharma |
| PTFE / FEP Lining | Concentrated acids & alkalis — highest resistance |
| GFRP / FRP | Seawater, brine, chemical wastewater |
ISO 15783 / API standards. OEM & customization available. Full export documentation (invoice, packing list, COO, test reports). After-sales: remote technical support, video installation guidance, spare parts, on-site commissioning for large projects. Lead time: 15–25 days (standard), 30–45 days (custom).
1–1,400 m³/h flow, up to 130 m head. Contact us with your specific requirements.
Yes. Share flow, head, medium, temperature, and material — we'll design a tailored solution with performance curve.
Standard models: 15–25 days. Custom designs: 30–45 days.
Yes — remote tech support, video guidance, spare parts, and on-site commissioning for large projects.
Contact Shinjo Pump today — engineering team responds within 24 hours with quotation and pump recommendation.
Manufacturer-direct diaphragm pumps from Shinjo Pump. The third-generation QBK/QBY3 air-operated diaphragm pump. Flow up to 34.1 m³/h (568 L/min), head up to 70 m, outlet pressure ≥0.7 MPa, sizes DN10-DN100 (1/4"-4"), media temperature -20°C to 150°C. Browse our diaphragm pump models below or request a quote.
| Material | Cast Iron, Aluminium Alloy, Stainless Steel 304/316/316L, PP or PTFE flow parts; diaphragm in polypropylene, NBR, Neoprene, EPDM, PTFE, Viton, polyether or Teflon |
|---|---|
| Size | DN10-DN100 mm (1/4"-4") |
| Flow Rate (Q) | Up to 34.1 m³/h (568 L/min) for QBY3 series, for QBY4 series maximum up to 53 m³/h |
| Lift Head (H) | Up to 70 m for QBY3 series, for QBY4 series maximum up to 84 m |
| Outlet Pressure | ≥0.7 MPa (7 kgf/cm²) |
| Suction Lift | Up to 7 m — self-priming, no priming water required |
| Max Solid Diameter | Up to 10 mm |
| Max Viscosity | Up to 1,000 cP |
| Media Temperature | -20°C to 150°C |
| Power Source | Compressed air (QBY/QBK, air supply 0.3-0.7 MPa) or electric motor (DBY) |
| Model | Material & Working Parts | Best For |
|---|---|---|
| Polypropylene (PP/PVDF/PTFE) | Polypropylene (PP) body with PVDF or PTFE wetted parts options | Chemical duty — acids, alkalis and solvents where metal housings are not suitable |
| Aluminium Alloy | Aluminium alloy housing (material code L) | Paint, glue, grinding materials; can be soaked in media, conveys viscous liquid, no oil lubricant required |
| Stainless Steel | Stainless steel 304 / 316 / 316L housing (material code P / P316 / P316L) | Strong acid, alkali and corrosive liquids; suction lift up to 7 m, outlet pressure ≥0.7 MPa |
| Model | Max Flow (L/min) | Max Flow (m³/h) | Max Head (m) | Max Suction Lift (m) | Caliber DN (mm) | Air Inlet (in) | Max Particle (mm) |
|---|---|---|---|---|---|---|---|
| QBY3-10 | 18.9 | 1.13 | 70 | 2.5-3 | 10 | 1/4 | 1.5 |
| QBY3-15 | 18.9 | 1.13 | 70 | 2.5-3 | 15 | 1/4 | 1.5 |
| QBY3-20 | 57 | 3.4 | 70 | 4.5-7.6 | 20 | 1/4 | 2.5 |
| QBY3-25 | 57 | 3.4 | 70 | 4.5-7.6 | 25 | 1/4 | 2.5 |
| QBY3-25A | 151 | 9.1 | 70 | 5.4 | 25 | 1/2 | 3.2 |
| QBY3-32 | 151 | 9.1 | 70 | 5.4 | 32 | 1/2 | 3.2 |
| QBY3-40 | 151 | 9.1 | 70 | 5.4 | 40 | 1/2 | 3.2 |
| QBY3-50 | 378.5 | 22.7 | 70 | 5.48 | 50 | 1/2 | 5.48 |
| QBY3-65 | 378.5 | 22.7 | 70 | 5.48 | 65 | 1/2 | 5.48 |
| QBY3-80 | 568 | 34.1 | 70 | 5.48 | 80 | 1/2 | 6.3 |
| QBY3-100 | 568 | 34.1 | 70 | 5.48 | 100 | 1/2 | 6.3 |
Diaphragm pumps transfer corrosive, granular, high-viscosity, volatile, flammable and toxic liquids across the following industries:
- Chemical industry: acids, alkalis, solvents, suspensions and dispersions.
- Petroleum industry: oil pumping, heavy oil, grease, sludge and mud transfer.
- Coating industry: resins, solvents, colorants and paints.
- Food & beverage: semi-fluids such as chocolate, brine, vinegar, syrup, vegetable/soybean/animal oil and honey; yeast, concentrates, wine, fruit juice and corn syrup.
- Daily chemicals & pharmaceutical: detergents, shampoos, emulsions, creams and surfactants; solvents, acids and alkalis, botanical extracts, ointments and plasma.
- Ceramics industry: clay slip, porcelain slurry and lime slurry.
- Mining & water treatment: coal slurry, mortar, explosive slurry and lubricating oil; lime slurry, soft sediment, waste water and chemicals.
- Electronics industry: solvents, plating solutions, cleaning liquids, sulfuric and nitric acid, corrosive acids and polishing liquids.
- Textile industry: dye chemicals, resins and adhesives.
- Construction industry: cement slurry, tile mortar, rock slurry and ceiling compound.
- Automotive & furniture: polishing emulsion, oil, coolant, cleaning liquid, topcoat, varnish additives and degreasing liquid; adhesives, varnish, PVA wood glue, epoxy resin and starch adhesives.
- Metallurgy: casting defoamers, metal slurry, hydroxide and carbonate slurries, wet scrubber slurry.
QBY3‑series runs on compressed air (0.3‑0.7 MPa supply), no electricity required. It is suitable for portable transfer and flammable‑hazard environments; flow and discharge pressure can be stepless adjusted by air‑supply pressure.
DBY motor‑driven series is selected when plant compressed‑air supply is unavailable. Note: QBY3 pneumatic and DBY electric pumps have different maximum head, suction‑lift and dry‑running limits. Check respective product pages for exact performance.
Ambient working temperature: 5‑65℃. Allowable media temperature depends on wetted diaphragm material.
Yes. Wide flow passages deliver good solid‑passing performance. Maximum allowable particle size and viscosity capacity vary according to pump model.
Pump body materials: cast iron, aluminium alloy, PP, stainless steel 304, 316, 316L, PTFE lining.
Diaphragm options: NBR, Neoprene, EPDM, Viton, PTFE.
Valve balls & seats: NBR, Neoprene, PTFE, 304 / 316L stainless steel.
No priming water is required for both series.
⚠️ Difference on dry‑running capability:
• QBY3 pneumatic diaphragm pump: short‑time dry‑running is permitted, but continuous long‑time dry‑running is prohibited.
• DBY electric diaphragm pump: dry‑running is strictly forbidden under any operating condition, it will cause rapid mechanical damage.
Some models can be submerged in media under proper configuration. Neither pump requires oil lubrication.
Size: 1/2-6 Inch, DN15mm-DN150mm.
Flow Rate (Q): 0-200 (m3/h).
Lift Head (H): 0-55 (m).
Size: 1-1/2 IN-12 IN, DN40mm-DN300mm.
Flow Rate (Q): 3.75-840 (m3/h).
Lift Head (H): 19-680 (m).
-320x320.webp "Cast Iron Multistage Centrifugal Pump, ASTM 25B, 2-32 m3/h")
Size: 1-1/2-12 Inch, DN40mm-DN300mm.
Flow Rate (Q): 18.3-960 (m3/h).
Lift Head (H): 12-300 (m).
Shinjo produce screw pumps materials in cast iron, cast steel or stainless steel, sizes 1"-10" (DN25-DN250 mm), flow 0.53-150 m³/h, head up to 120 m, motor power 0.22-90 kw. Browse our single-screw models below or request a quote.
| Material | Cast Iron, Cast Steel or Stainless Steel |
|---|---|
| Size | 1"-10", DN25-DN250 mm |
| Flow Rate (Q) | 0.53 - 150 m³/h |
| Lift Head (H) | Up to 120 m |
| Motor Power | 0.22 - 90 kw |
| Operating Temperature | Up to 120°C |
| Viscosity Range | 1 - 1,000,000 cp |
| Model | Material & Working Parts | Best For |
|---|---|---|
| I-1B | Eccentric screw (rotor) + double helix screw bushing (stator) | Food, metallurgy, construction, pharmaceutical, chemical — viscous media and corrosive media |
| GNF | High-quality stainless & acid-proof steel wetted parts; non-toxic rubber bushing | Chemical, petroleum, sewage — viscosity 1-1,000,000 cp; working temp up to 120°C |
| G Type | Eccentric screw (rotor) + fixed bush (stator) — universal pump | 11 industries — environmental, shipbuilding, petroleum, pharma, food, brewing, construction, mining, chemical, printing, boilers |
| Model | Capacity | Head | Size | Motor Power | Speed |
|---|---|---|---|---|---|
| I-1B | 1.5 - 35 m³/h | 50 - 120 m | DN25 - 150 mm | 1.5 - 15 kw | 960 rpm |
| GNF | 1.5 - 20 m³/h | — | DN32, DN50, DN100 | 1.5 - 11 kw | 960 rpm |
| G Type | 0.8 - 150 m³/h | Pressure up to 1.2 MPa (dual-stage) | DN25-DN250 mm (1"-10") | 0.75 - 90 kw | Adjustable |
Single screw pumps are widely used across the following ranges and industries:
Viscous & shear-sensitive media
Food processing (honey, syrup, cream, fruit pulp), pharmaceutical (ointments, emulsions), and chemical (adhesives, grease, colloid slurry) — where gentle, low-shear transfer preserves product integrity.
Slurry & solids-laden fluids
Mining (underground sewage with particles), environmental (sludge, short-fiber wastewater, filter-press feed), construction (cement mortar, lime slurry) — where abrasive content would damage centrifugal impellers.
Industrial & process fluids
Petroleum (crude oil, polymer injection), brewing (fermented lees, pulps), printing & paper (high-viscosity ink, short-fiber pulp), industrial boilers (coal-water slurry).
From 1 cp up to 1,000,000 cp. The GNF model handles viscosity 1-1,000,000 cp media without solid particles, slurry, suspension or gel. The I-1B handles media with viscosity up to 10,000 poise seconds containing solid particles or colloidal solutions.
Up to 120°C for GNF and Stainless Steel Screw Pump models (rubber bushing design).
Yes. The G Type can transport solid particles and fibers — up to 20 mm solids and 150 mm fibers on the largest single-stage model (G135-1). The I-1B is also suitable for media containing solid particles or colloidal slurry solutions.
On the G Type series, the export pressure can be increased by adding stages — each additional stage increases pressure by 0.6 MPa. Single-stage models are rated at 0.6 MPa; dual-stage models are rated at 1.2 MPa.
GNF models use high-quality stainless steel and acid-proof steel wetted parts with non-toxic rubber bushing. Cast Iron models suit abrasive solids and viscous liquids. Stainless Steel models offer rust, acid and oil resistance. The I-1B and G Type use eccentric screw (rotor) with bushing/stator construction.
Size: 1-1/2 to 10 Inch, DN32mm-DN250mm.
Flow Rate (Q): 3.2 to 280 (m3/h).
Lift Head (H): 20 to 80 (m).
Size: 1-1/2-10 Inch, DN40mm-DN250mm.
Flow Rate (Q): 5-600 (m3/h).
Lift Head (H): 7-40 (m).
Size: 1/2-32 Inch, DN100mm-DN800mm.
Flow Rate (Q): 72-5500 (m3/h).
Lift Head (H): 10-125 (m).
