Mechanical / Hydraulic diaphragm · piston · polymer prep station 300-5,000 L/h. Chlorine, NaOH, PAC, polymer, anti-scalant injection for wastewater treatment, pharmaceutical, oil & gas, textile dyeing. Doseuro IT, Sandpiper US, Nova Rotors IT handles.
4 typical problems when using the wrong dosing pump for wastewater treatment, pharmaceutical, oil & gas, textile dyeing — consequences ranging from poor quality to toxic leakage, SCADA not integrated.
Low-cost dosing pump or stuck check valve — ±5-10% deviation from setpoint. Insufficient chlorine causes coliform to exceed QCVN; excess PAC increases sludge; incorrect polymer dosage causes poor flocculation. Requires ±1% API 675.
Single diaphragm ruptures at 1000+ pulses/h — chlorine, methanol, anti-scalant leak to the environment. Operators only detect when odor/color appears. Requires SDI double-diaphragm + leak sensor immediate alarm.
Dosing pump with on/off relay only — no flow rate feedback, no remote setpoint. Plant manager cannot auto-tune based on turbidity / pH / ORP sensor. Requires 4-20mA output + PROFIBUS / Modbus 2-way communication.
Polymer in powder/emulsion form requires 30-60 minute aging at 0.1-0.5% dilution before activation. Manual mixing or old batches are inadequate — poor flocculation, poor sludge dewatering. Requires H Series polymer prep station continuous automatic activation.
Mechanical diaphragm (toxic) · Hydraulic diaphragm sealed · API 675 PDP/SDI for oil & gas · H Series polymer prep — select correctly by flow rate, pressure & chemistry.
Mechanical diaphragm — directly actuated diaphragm, simple & durable for chlorine, NaOCl, NaOH, PAC, anti-scalant. Pump head PP/PVC/PVDF by chemistry. Suitable for wastewater treatment, RO anti-scalant, textile dye dosing.
Hydraulic diaphragm — oil-actuated diaphragm so fully sealed, high pressure capable. Suitable for pharmaceutical API dosing, high-concentration sodium hypochlorite, methanol, volatile chemicals requiring containment. BR Series has integrated relief valve.
Series API 675 oil & gas standard — steady-state accuracy ±1%, linearity ±3%, repeatability ±3%. SDI double-diaphragm + leak sensor instant inner diaphragm rupture alarm, preventing leakage to the environment. For corrosion inhibitor, methanol injection, anti-foam refinery.
Polymer prep station 3 chambers — mixing (mix), activation (aging 30-60 min), dosing — continuous automatic. Screw feeder feeds powder + water dilution 0.1-0.5%. Suitable for WWTP sludge thickening, belt press / decanter dewatering, mining tailings.
Doseuro IT · Sandpiper US · Nova Rotors IT — Italy / USA · API 675 + ATEX · full range mechanical/hydraulic diaphragm + AODD chemical transfer + MN low-flow.
"Full-range dosing OEM — mechanical · hydraulic · API 675 · polymer prep"
D Series mechanical diaphragm (up to 574 L/h) · A Series piston (up to 1,458 L/h) · B/BR hydraulic diaphragm sealed (up to 1,068 L/h) · PDP/SDI API 675 (up to 3,800 L/h, double-diaphragm leak detect) · H polymer prep 300-5,000 L/h.
"AODD chemical transfer · drum/IBC unload · no electricity"
AODD supplementing the dosing line — transferring chemicals from drum/IBC to day tank no power required (ATEX zone). S05-S30 cover 56-1,078 L/min. ESADS+® air valve saves 56% compressed air vs. generic AODD.
"MN dosing eccentric screw · 0.5-50 L/h · 24 bar · ATEX"
MN series eccentric screw dosing — pulse-free continuous flow cho polymer precision dosing, viscous chemical low-flow. Pressure up to 24 bar, ATEX-ready. Ideal when smooth, pulse-free dosing is required, unlike diaphragm.
5 reasons — API 675 certified · SDI double-diaphragm · 4-20mA/PROFIBUS · full D→H range · spare parts stocked in HCM.
Doseuro PDP/SDI compliant API 675 — steady-state accuracy ±1%, linearity ±3%, repeatability ±3%. Certificates issued with documentation for oil & gas and EPC water treatment projects.
Series SDI 2 membrane layers + intermediate sensor — 4-20mA alarm immediately upon inner membrane rupture, preventing chlorine/methanol/inhibitor leaks into the environment. Operator safe, MSDS compliance.
Doseuro Smart Driver — 4-20mA input + output, PROFIBUS DP, Modbus RTU. Closed-loop auto-tune theo turbidity / pH / ORP sensor. Trend log audit-ready cho QCVN report.
D Mechanical · A Piston · B/BR Hydraulic · PDP/SDI API 675 · H Polymer Prep — 4 L/h to 5,000 L/h, 1 supplier, 1 spare parts standard. Supplemented by Sandpiper AODD cho drum unload + Nova Rotors MN cho 0.5-50 L/h precision pulse-free.
Diaphragm PTFE/EPDM/Viton · one-way valve · oil hydraulic Doseuro · seal Sandpiper · stator Nova Rotors. Service team commissioning & tuning on-site for new dosing skids.
Free dosing audit · 48h response. Submit flow rate + chemistry list — TKT recommends D / B / PDP / SDI / H series + signal integration + spare parts plan.
Doseuro D/A/B/PDP/H · API 675 · 4-20mA · PROFIBUS integration
Detailed technical guide for Sandpiper diaphragm pumps — correct selection, installation, maintenance, and troubleshooting.
Kéo 2 thanh thông số — nhận ngay dòng bơm phù hợp từ danh mục chính hãng EU/G7, kèm mức độ phù hợp và báo giá kỹ sư trong 24h.
