Grundfos DDA 7.5-16 AR-PV/V/C-F-31I001FN Ecolab Digital Chemical Dosing Pump 230V 97792289 #5011

Grundfos DDA 7.5-16 AR-PV/V/C SMART Digital Chemical Dosing Pump 240V 97792289

This listing is for a Grundfos DDA 7.5-16 AR-PV/V/C SMART Digital chemical dosing pump, product number 97792289. It is a precision diaphragm dosing pump designed for accurately injecting small quantities of chemicals into water treatment and industrial process systems.

The pump delivers an adjustable dosing capacity of 0.0025–7.5 litres per hour against a maximum operating pressure of 16 bar. It features a chemically resistant PVDF dosing head, FKM seals, ceramic valve balls and intelligent digital controls.

Unlike conventional fixed-speed dosing pumps, the Grundfos DDA uses a variable-speed stepper motor to regulate the dosing stroke. This provides precise adjustment over a wide operating range while maintaining a full diaphragm stroke for reliable dosing performance.

Condition: Supplied in as-new surplus condition. The item may show minor cosmetic marks from storage and handling.

Guarantee: Supplied with a 2-year guarantee.

Technical Specifications

• Manufacturer: Grundfos
• Model: DDA 7.5-16 AR-PV/V/C
• Product number: 97792289
• Product range: SMART Digital DDA
• Pump type: Positive displacement diaphragm dosing pump
• Motor technology: Variable-speed stepper motor
• Maximum dosing flow: 7.5 litres/hour
• Minimum dosing flow: 0.0025 litres/hour / 2.5 ml/hour
• Maximum operating pressure: 16 bar
• Turndown ratio: 1:3000
• Dosing repeatability: ±1% under specified operating conditions
• SlowMode 50% maximum flow: 3.75 litres/hour
• SlowMode 25% maximum flow: 1.88 litres/hour
• Dosing head material: PVDF – polyvinylidene fluoride
• Gasket / sealing material: FKM / Viton-type fluoroelastomer
• Valve ball material: Ceramic
• Diaphragm: PTFE diaphragm construction
• Control variant: AR – analogue control and relay functionality
• Control panel: Graphical LCD display with rotary push-button control
• Control panel position: Front-mounted, adjustable to alternative positions
• Manual dosing control: Yes
• Pulse dosing control: Yes
• Analogue input: 0/4–20mA
• Analogue output: 0/4–20mA
• External stop input: Yes
• Tank level monitoring input: Yes, with suitable external level switches
• Relay outputs: 2 configurable outputs
• Communication: GENIbus / optional fieldbus interface equipment
• Automatic deaeration: Yes
• SlowMode function: Yes
• Maximum suction lift during operation: 6 metres under specified conditions
• Maximum suction lift during priming: 2 metres under specified conditions
• Liquid temperature range: -10°C to +45°C, subject to chemical compatibility
• Ambient temperature range: 0°C to +45°C
• Power supply: Single-phase 100–240V AC, 50/60Hz
• UK voltage: Suitable for 230V / 240V mains supply
• Maximum electrical power input: Approximately 24W
• Enclosure protection: IP65 / NEMA 4X
• EAN: 5710624933947
• Special variant: Product number 97792289 is also catalogued as an Ecolab-associated DDA version

Technical note: Performance figures are based on Grundfos DDA 7.5-16 technical literature. The exact connection arrangement, installation accessories and special-variant configuration should be checked against the supplied unit.

Need help confirming suitability?
Call us on 01803 220416 for technical assistance.

Manufacturer Technical Documentation

Grundfos SMART Digital DDA, DDC and DDE technical data booklet, including performance information, materials, operating modes, installation dimensions and product selection:

View Grundfos SMART Digital Dosing Pump Data Booklet

Grundfos installation and operating instructions for SMART Digital S DDA and DDC dosing pumps:

View Grundfos DDA Installation and Operating Instructions

Typical Applications

• Industrial chemical dosing and metering
• Water treatment chemical injection
• pH adjustment and chemical conditioning
• Reverse osmosis and membrane water treatment
• Cooling tower chemical treatment
• Boiler water treatment
• Industrial cleaning and process chemical dosing
• Commercial water treatment installations
• Automated dosing controlled by PLC, pulse or analogue signal
• Replacement of compatible Grundfos DDA dosing pumps in existing treatment systems

Important: The application must be compatible with the specific PVDF/FKM/ceramic wetted-material configuration. Chemical compatibility must be established before use.

Frequently Asked Questions

What is the Grundfos DDA 7.5-16 used for?

The Grundfos DDA 7.5-16 is a precision chemical dosing pump. It is designed to introduce accurately controlled quantities of liquid chemicals into water treatment systems and industrial processes.

Unlike a conventional centrifugal pump used for transferring large volumes of water, the DDA is designed for comparatively small dosing quantities, with electronic adjustment down to just a few millilitres per hour.

What does DDA 7.5-16 mean?

DDA identifies the Grundfos SMART Digital advanced dosing pump range.

The 7.5 represents the maximum dosing capacity of 7.5 litres per hour, while 16 represents the maximum operating pressure of 16 bar.

The pump is therefore designed for applications requiring relatively small chemical dosing quantities against potentially high discharge pressures.

What does AR-PV/V/C mean?

• AR: Digital control variant with analogue input and relay functionality
• PV: PVDF dosing head
• V: FKM sealing material
• C: Ceramic valve balls

These material codes are important because dosing pumps are manufactured with different wetted-material combinations depending on the chemicals being handled.

What is the advantage of the PVDF dosing head?

PVDF (polyvinylidene fluoride) is a high-performance engineering polymer offering good chemical resistance in many demanding industrial applications.

Compared with some standard plastic pump-head materials, PVDF can provide improved chemical resistance for selected liquids. However, compatibility depends on the chemical, concentration and temperature.

This pump uses FKM seals and ceramic valve balls, which must also be compatible with the liquid being dosed.

Can this pump dose acids, alkalis or cleaning chemicals?

Potentially, but suitability must be checked for the specific chemical.

The PVDF head can offer good resistance to many chemicals, but the FKM seals may not be appropriate for every acid, alkaline solution, oxidising chemical or solvent.

Before selecting the pump, check the chemical concentration, temperature, viscosity and compatibility with PVDF, FKM, ceramic and PTFE. Do not assume that a chemical is suitable simply because the pump has a PVDF head.

Can this pump dose sodium hypochlorite?

The Grundfos DDA range is commonly used in chemical treatment applications involving liquids that may release gas, including certain disinfection duties.

The DDA incorporates automatic deaeration and SlowMode functions that can help improve dosing reliability where gases form in the dosing head.

However, this particular pump uses FKM seals. Sodium hypochlorite compatibility depends on concentration, temperature and seal selection, so it should not be assumed suitable without checking the complete material specification.

How accurately can this pump dose chemicals?

The DDA 7.5-16 has a published dosing repeatability of approximately ±1% under specified operating conditions.

Its variable-speed stepper motor adjusts the dosing process while maintaining a full diaphragm stroke, allowing precise control over a wide capacity range.

For accurate operation, the pump should be correctly installed, primed and calibrated for the actual liquid and system conditions.

What is the minimum dosing quantity?

The minimum published dosing capacity is 0.0025 litres per hour, equivalent to 2.5 millilitres per hour.

This gives a dosing adjustment range of 1:3000, allowing the pump to operate at very low dosing rates compared with its maximum capacity of 7.5 litres per hour.

Does this pump have automatic chemical dosing control?

Yes. The AR version supports several dosing and control methods, including:

• Manual dosing at a selected capacity
• Pulse-controlled dosing from an external signal or water meter
• Analogue 0/4–20mA control
• Pulse-based batch dosing
• Timer-based dosing functions
• External start/stop control
• Tank level monitoring using compatible external switches

This allows the pump to be integrated into many automated chemical dosing and water treatment installations.

Can it be controlled by a PLC or building management system?

Yes. The AR control version supports 0/4–20mA analogue control, external stop inputs and configurable relay outputs.

The DDA range also supports GENIbus communication and integration with certain industrial fieldbus systems using suitable additional interface equipment.

The correct control wiring, signal configuration and external interface requirements should be checked before installation.

Does this pump have Grundfos FlowControl or integrated flow measurement?

No, not as the standard AR configuration.

The DDA range includes different control variants. The AR version provides digital dosing control, analogue signals and relay functionality.

The more advanced FC and FCM variants provide additional flow-monitoring functions, with integrated flow measurement available on the FCM version.

If your existing system requires these functions, confirm that the replacement pump has the correct control variant before ordering.

What is the SlowMode function?

SlowMode reduces the suction stroke speed to help the pump handle more difficult suction conditions, including some higher-viscosity and gas-forming liquids.

For the DDA 7.5-16:

• Normal maximum capacity: 7.5 litres/hour
• SlowMode 50%: 3.75 litres/hour maximum
• SlowMode 25%: 1.88 litres/hour maximum

Slowing the suction stroke can help reduce cavitation risk and improve filling of the dosing head. Actual suitability depends on liquid properties, suction pipework and valve configuration.

Does this pump need priming?

Yes. The pump and suction line must be correctly installed and primed before dosing chemicals.

Grundfos provides a deaeration arrangement to assist commissioning. The published DDA 7.5-16 reference data specifies a maximum operating suction lift of approximately 6 metres and a maximum priming suction lift of approximately 2 metres under specified conditions.

For chemical dosing, the suction height should be kept as low as practical, with correctly sized suction pipework and suitable valves.

Is this suitable for 240V UK electrical supplies?

Yes. The Grundfos DDA SMART Digital range uses a universal single-phase 100–240V AC, 50/60Hz electrical supply.

The pump is therefore suitable for normal UK 230V / 240V mains voltage. The mains plug and installation arrangement should be checked, as some European-market versions use an EU-style plug.

Is product number 97792289 an Ecolab version?

Product number 97792289 is identified in distributor catalogue information as an Ecolab-associated Grundfos DDA 7.5-16 AR-PV/V/C variant.

For replacements in existing chemical dosing equipment, the exact Grundfos product number should be checked rather than relying on the general DDA 7.5-16 model designation alone.

Different versions can have variations in connections, accessories or other configuration details. Please contact us with the existing nameplate if you need assistance confirming compatibility.

Are the suction hose and injection accessories included?

Grundfos supplies DDA dosing pumps in different configurations, with or without installation accessories.

Depending on the version, an installation set may include dosing hose connections, suction hose, discharge hose, a foot valve and an injection unit.

Please refer to the product photographs for the exact components supplied with this surplus item. Additional tubing, valves or installation accessories may be required.

What should I check before ordering?

• Product number: 97792289
• Pump model: DDA 7.5-16 AR-PV/V/C
• Required dosing capacity: Maximum 7.5 litres/hour
• Required discharge pressure: Maximum 16 bar
• Wetted-material compatibility: PVDF, FKM, ceramic and PTFE
• Electrical supply: 100–240V AC single-phase
• Control system: AR version with required inputs and outputs
• Connection sizes and installation accessories
• Existing system compatibility: Especially for OEM or Ecolab-associated installations

About Our Stock

We specialise in supplying new and unused surplus commercial pumps, industrial dosing equipment and genuine Grundfos products.

This item is supplied in as-new surplus condition and may show minor cosmetic marks from storage and handling.

Supplied with a 2-year guarantee.

Chemical dosing pumps must be selected carefully to ensure compatibility with the liquid, operating pressure, electrical supply and control system. If you require assistance confirming suitability, please contact us on 01803 220416.