| | | The pump ratio of an existing pump can be easily changed without dismantling the air drive section. This saves you the purchase of a complete new pump. It is simple to convert a single acting pump into a double acting pump. Air drive of the pump with only the air piston and cycling spoolasmoving parts. Unlike most other air-driven pumps, there are no mechanical pilot valves and long internal pilot channels which have a negative influence on the reliability and cycling speed of the pump. The air cycling valve is mounted directlyon top of the air cylinder. Low noise level compared to other air-driven pumps with mechanical pilot valves. Freezing of the pump is avoided by using an air cycling valve provided with light weight spool for high airflow atlowairvelocity. Suitable for water because all wetted parts of the high pressure pump section are made of special selected stainless steeland bronze. Long working life of the seals because the pumps are standard provided with specially developed U-PE seals for optimum plunger sealingfor a wide range of liquids. | | The high-pressure industrial seal can be replaced within minutes, without dismantling the air drive section. Costly down-timeisreduced toaminimum. Standard provided with packing release holes to prevent liquid from the hydraulic section escaping to theairdrivesection. Check valve seats can be replaced within minutes. The retaining valves have soft seats, preventing capacity loss after a certain time ofoperating. Less frictional resistance of the air piston. Unlike other air-driven pumps the air piston sealing of a Resato air-driven pump is not an O-ring. It is a V-shaped expanding ring, which needs less preload than an O-ring. The air piston is provided with PTFE based slydrings (bearings supplier) for excellent wear- and-slide qualities. The slyd-rings increase the service lifeof the sealingsurface(aircylinder) andtheairpiston sealing. Excellent control of flow and output pressure due to lowfrictional resistance of the air piston, even at low air drive pressure. History of proven reliability under severe conditions, forinstanceinoffshore use. All pressure and flow output is based on 7 bar (100 psi) air drive pressure instead of 10 bar (150 psi). | | |
| | | WHY USE AN AIR-DRIVEN PUMP | | CONVERSION FROM SINGLE ACTING INTO DOUBLEACTING Your single acting Resato pump type P160 or P200 can be easily converted into a double acting pump. Order a conversion kit to bring this about, ^or example, if you want to convert a P200-180-1, order conversion kit C200-180-1. | | |
| | | Compressed air used as a power drive offers enormous advantages over use of other power drives: risks of excessive heat, flame, spark or shock are reduced considerably. Apart from that, both output pressure and flow can be controlled by simply regulating the air drive pressure of the air-driven pump. Varying the air inlet pressure will automatically and accurately adjust the hydraulic output pressure. The cycling speed is at a maximum when the outlet pressure is low. As the outlet pressure builds up, the cycling speed is reduced until a stall condition is reached at the desired outlet pressure. The stall pressure can be held without anyfurther use of energy. Other gases such as nitrogen or C02 can be used as alternatives to drive the pump. Resato air-driven pumps are simple to install, they are compact and very quick and easy to maintain. | | |
| | | CHANGING THE RATIO OF A RESATO PUMP The modular design of Resato pumps also offers the possibility of adapting the pump ratio of an existing pump. This saves you the purchase of a complete new pump. The ratio of a pump can be changed without dismantling the air drive section. For example, if you want to change a P160-65-1 into a P160-115-1, order ratio kit R160-115-1. In case of a double acting pump, for example P160-65-2, order two ratio kits R160-115-1. | | |