Mechanical Diaphragm Dosing Pump 120 L / Hour at 10.0 Bar

TAM-4-108 Mechanical Diaphragm Dosing Pump pictured here with a 316 Stainless Steel, available with a choice of 3 gearbox sizes.

TAM-4-108 Mechanical Diaphragm Dosing Pump Introduction

The TAM-4-108 Mechanical Diaphragm Dosing Pump works on the cavity displacement principle with a reciprocating PTFE diaphragm causing linear volumetric displacement to enable steady, even and continuous chemical metering.

As a process device, the TAM-4-108 is designed to deliver defined amounts of chemical reagent with high precision. Manufactured with an aluminium body and foot mounting stand, the TAM-4-108 is designed to be horizontally mounted and connected to a process using the 3/8" BSP connections.

The TAM-4-108 is driven from a 3 phase 0.37kW 400VAC motor and is also available with a single phase 0.55kW 230VAC motor.

TAM-4-108 Mechanical Diaphragm Dosing Pump Head Options

The TAM-4-108 Dosing Pump is available with a choice of four head material types, inlcluding: PolyPropylene, PVC, PVDF or 316 Stainless Steel.  All the head options on the TAM-4-108 are paired with a PTFE diaphragm measuring 108mm Ø. The stroke length of the TAM-4 series is 4mm. 

As well as the head material being optional, the other liquid end components (otherwise known as wetted parts) which constitutes the materials in contact with the solution to be dosed are available in a sellection of materials to provide greater compatibility with a range of chemicals.

The TAM-4-108 makes use of a double ball valve for both the suction side and discharge side of the pump, to aid both priming of the pump and ensure precision chemical delivery during operation.

The valve seats are available in either Viton (© DuPont / Chemours) or EPDM. You can check the material compatibility using our material compatibility database and we also recommend that you check with your chemical supplier to ensure that all the parts of the liquid end are compatible with the chemical to be dosed.

TAM-4-108 Gear Box Options

As with all the pumps in our TAP range, the TAM-4-108 is available with a fixed speed gear box to give either 58 strokes per minute, 78 strokes per minute or 116 strokes per minute.

By increasing the number of strokes per minute, the output flow rate of the pump changes as per the following table:-

Mechanical Diaphragm Dosing Pump Adjustable Flow Rate

The TAM-4-108 has a micrometer stroke length adjustment dial, mounted at the side of the pump.  This allows the stroke length to be reduced from the maximum length of 4mm so that the flow rate can be set to anywhere between 0 - 100% of the strokes maximum output.  To maintain accuracy we don't advocate running the pump below 20% of the rated output.

TAM-4-108 Features & Benefits

The TAM-4-108 Mechanical Diaphragm dosing pump is a foot mounting mechanical diaphragm dosing pump, designed to be secured on a horizontal surface, to deliver a chemical reagent to a process.

With a wide range of wetted parts available, the TAM-4-108 is suitable for operation with a wide range of chemical reagents, including concentrated chemicals.  Please don't hesitate to contact us for advice or check with your chemical supplier to ensure compatibility with your process.

With a PTFE diaphragm and accurately machined and assembled components, the TAM-4-108 is designed to meter a defined volume of chemical, steadily and evenly, into a process with high precision.

The TAM-4-108 can be fitted with either a 0.37kW 3 phase 415 VAC motor or a 0.55kW 3 phase 230 VAC motor.

Each motor drives a gearbox which either outputs 58, 78, or 116 strokes per minute and 60.0 Litres / Hour, 80.0 Litres / Hour, or 120.0 Litres / Hour respectively.  Each option has a maximum pressure output of 10.0 Bar, when using with any combination of head materials.  All the head options use 3/8" BSP connections for easy connecting directly into a process.

With a micrometer adjustment, the output rate of the pump can be user adjusted between 0 - 100% of the flow rate, to give greater control over your chemical dosing.

The TAM-4-108 is a fully compatible with a range of dosing accessories including: pulsation dampeners, anti-syphon, back pressure and safety valves.