High-pressure filter press diaphragm pumps
High-pressure diaphragm pump with pressure booster for direct mounting on a filter press. The pump’s design and functionality allow for direct filtration of the slurry.
The booster increases the pressure achieved by the pump at a 2:1 ratio, for example: with an available air pressure of 7 bar, the discharge pressure will be a maximum of 14 bar. As a result, the pump can achieve up to 16 bar at the pump outlet depending on its size.
The TF series high-pressure pumps are based on standard Tapflo diaphragm pumps – available in PE/PTFE and metallic versions. When purchased as a complete unit, the pressure regulator and pressure booster are already installed on the pump by means of an external mounting bracket.
FAST FACTS
FEATURES & BENEFITS
High-pressure diaphragm pump with pressure booster for direct mounting on a filter press. The pump’s design and functionality allow for direct filtration of the slurry.
The booster increases the pressure achieved by the pump at a 2:1 ratio, for example: with an available air pressure of 7 bar, the discharge pressure will be a maximum of 14 bar. As a result, the pump can achieve up to 16 bar at the pump outlet depending on its size.
The TF series high-pressure pumps are based on standard Tapflo diaphragm pumps – available in PE/PTFE and metallic versions. When purchased as a complete unit, the pressure regulator and pressure booster are already installed on the pump by means of an external mounting bracket.
| Pump capacity: | 34.2 m3/h (570 l/min) | |
| Max. discharge pressure: | 16 bar | |
| Max size of solids: | 3-15 mm | |
| Temperature: | 110 °C | |
| Housing materials: | PE, PTFE, anti-static PE or PTFE, aluminum or stainless steel AISI 316L | |
| Diaphragm materials: | plastic version: PTFE, PTFE 1705B, EPDM, NBR, FKM
metal version: NBR, PTFE or EPDM |
|
| Ball valve materials: | plastic version: PTFE, EPDM, NBR, AISI 316L steel, PU, Ceramic, FKM
metal version: NBR, PTFE, AISI 316L, EPDM, polyurethane or ceramic |
|
| Air distributor materials: | plastic version: brass, AISI 316L steel or PET
metal version: brass/NBR or optionally AISI 316L/FKM, PET/NBR or PET/FKM |
|
| Basic differences in material designs: | ||
| PE HD (polyethylene) | High abrasion resistance, 6-7 times better than polypropylene (PP) – this allows the use of such pumps for pumping, e.g., slurries with strong abrasive properties. PE is resistant to most aggressive chemicals, such as concentrated acids and alkalis. The maximum operating temperature is 70 °C. | |
| PTFE (pure polytetrafluoroethylene) | High chemical resistance – pumps made of this material can handle even the most corrosive substances, e.g., concentrated nitric acid. The maximum operating temperature is 100 °C. | |
| Aluminum and cast iron | For transporting media with a neutral pH, both thick and thin, containing solid particles or having abrasive properties. Pumps made of aluminum and cast iron can be used, for example, in workshops, the dyeing industry, wastewater treatment plants, etc. | |
| Aluminum with PTFE coating | Created for the printing industry, where an alternative to more expensive PTFE pumps was needed, but aluminum was not chemically resistant. Pumps for use wherever a medium with slightly acidic or alkaline properties needs to be pumped. | |
| Acid-resistant steel AISI 316L | Castings for these pumps are made using the lost wax method, which ensures high surface quality and dimensional accuracy. They are characterized by mechanical strength combined with chemical resistance. AISI 316L steel is resistant to aggressive substances such as nitric acid and sodium hydroxide. | |
| Available sizes: | |||
| Model | Max. capacity (l/min) | BSP threaded connections | ![]() ![]() |
| plastic version: | |||
| TF50 | 60* | 1/2″ | |
| TF100 | 125* | 1″ | |
| TF200 | 330* | 1 and 1/2″ | |
| TF400 | 330* | 1 and 1/2″ | |
| metal version: | |||
| TF70 | 78 | 3/4″ | |
| TF120 | 158 | 1″ | |
| TF220 | 570 | 2″ | |
| TF420 | 570 | 2″ | |
| * maximum capacity achievable using the pressure booster bypass at low discharge pressure | |||
| Industry | Application example |
| Chemical | acids, bases, alcohols, solvents, latex, emulsions |
| Food | CIP fluids, spices, pigments |
| Paper | glues, slurries, adhesives, thinners, resin, sodium silicate, titanium oxide |
| Surface treatment | galvanic baths, acids, solvents, anode slimes, lacquers, enamels |
| Wastewater treatment plants | sludge, flocculants, application to filter presses, neutralization |
| Electronic | transport of liquids, “ultra” pure media, solutions for electrolytic coatings, mercury, solvents |
| Printing | glues, varnishes, inks, paints, latex, acids, resins, pigments |
The pump is driven by compressed air. The two diaphragms are connected by a diaphragm shaft and pushed back and forth by alternately pressurizing the air chambers behind the diaphragms using an automatically cycling air valve system.
The only difference between TF and standard AODD pump is that the pump is not supplied with air directly but through pressure booster.
The air supply is connected to port 1 in booster. The regulation knob 2 allows to adjust the amplification level up to 2:1 of input pressure. The manometers 3 show current settings. The pressure builds up inside the booster and when it reaches the desired output pressure it is released to the pump inlet 4.
Installing pumps on filter presses has never been easier. Simply mount the pump on the filter press and then connect it. Included with the pump are: a pressure booster, pressure gauges, a supply air regulator, and all necessary hoses and connectors.
| Air valve
The TF series is equipped with a special, hybrid air valve comprising of a brass body and PET cylinder. The cylinder is made of a light material therefore it does not damage the air valve housing and the pump center body at high pressures. |
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Diaphragms
The composite design of Tapflo diaphragm makes it very durable even at higher operating pressures. Inside there is a reinforcement net and light metal core making it ideal for continuous heavy duty service. The face of the diaphragm is completely smooth so no metal parts come into contact with the pumped liquid and there is no leakage through it. |
| Ball check valves
Tapflo TF pump is fitted with four check valves, making sure that the liquid is transferred in the right direction through the pump. The valve is of ball type, the simplest and reliable valve design. It has a good sealing capability and is easy to keep clean and to replace if necessary. For better durability, the valve balls and valve seats can be manufactured in polyurethane or AISI 316L stainless steel. |
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Reinforcements All plastic TF pumps are equipped with stainless steel reinforcement plates to provide better rigidness of the pump making it more robust. To enhance stability even further, the plates are higher than the pump to support the discharge side of the pump. Aluminium pumps are screwed together by means of pinscrews instead of standard screws. |
| Pump capacity: | 34.2 m3/h (570 l/min) | |
| Max. discharge pressure: | 16 bar | |
| Max size of solids: | 3-15 mm | |
| Temperature: | 110 °C | |
| Housing materials: | PE, PTFE, anti-static PE or PTFE, aluminum or stainless steel AISI 316L | |
| Diaphragm materials: | plastic version: PTFE, PTFE 1705B, EPDM, NBR, FKM
metal version: NBR, PTFE or EPDM |
|
| Ball valve materials: | plastic version: PTFE, EPDM, NBR, AISI 316L steel, PU, Ceramic, FKM
metal version: NBR, PTFE, AISI 316L, EPDM, polyurethane or ceramic |
|
| Air distributor materials: | plastic version: brass, AISI 316L steel or PET
metal version: brass/NBR or optionally AISI 316L/FKM, PET/NBR or PET/FKM |
|
| Basic differences in material designs: | ||
| PE HD (polyethylene) | High abrasion resistance, 6-7 times better than polypropylene (PP) – this allows the use of such pumps for pumping, e.g., slurries with strong abrasive properties. PE is resistant to most aggressive chemicals, such as concentrated acids and alkalis. The maximum operating temperature is 70 °C. | |
| PTFE (pure polytetrafluoroethylene) | High chemical resistance – pumps made of this material can handle even the most corrosive substances, e.g., concentrated nitric acid. The maximum operating temperature is 100 °C. | |
| Aluminum and cast iron | For transporting media with a neutral pH, both thick and thin, containing solid particles or having abrasive properties. Pumps made of aluminum and cast iron can be used, for example, in workshops, the dyeing industry, wastewater treatment plants, etc. | |
| Aluminum with PTFE coating | Created for the printing industry, where an alternative to more expensive PTFE pumps was needed, but aluminum was not chemically resistant. Pumps for use wherever a medium with slightly acidic or alkaline properties needs to be pumped. | |
| Acid-resistant steel AISI 316L | Castings for these pumps are made using the lost wax method, which ensures high surface quality and dimensional accuracy. They are characterized by mechanical strength combined with chemical resistance. AISI 316L steel is resistant to aggressive substances such as nitric acid and sodium hydroxide. | |
| Available sizes: | |||
| Model | Max. capacity (l/min) | BSP threaded connections | ![]() ![]() |
| plastic version: | |||
| TF50 | 60* | 1/2″ | |
| TF100 | 125* | 1″ | |
| TF200 | 330* | 1 and 1/2″ | |
| TF400 | 330* | 1 and 1/2″ | |
| metal version: | |||
| TF70 | 78 | 3/4″ | |
| TF120 | 158 | 1″ | |
| TF220 | 570 | 2″ | |
| TF420 | 570 | 2″ | |
| * maximum capacity achievable using the pressure booster bypass at low discharge pressure | |||