Type example SL and SC
Two separate circuits
A Sunfab dual flow pump can supply two completely different consumers.
The separated hydraulic circuits must each be equipped with a pressure limiting valve.
Parallel operation
Due to the high precision of Sunfab’s selection of SL dual flow pumps with equal flow in each circuit, the pumps can be used for parallel operation of two cylinders.
The solution is cost effective, opera¬tionally safe and has a high level of efficiency.
Type example SL and SC
Torque limiting
If the permitted torque of the drive source or the power take off is too low, the problem can be solved us¬ing a Sunfab dual flow pump and a sequence valve. Connection gives si¬multaneous automatic speed control in two stages.
The user uses the flows of both circuits at low pressure.
When the system pressure exceeds the setting of the sequence valve, one flow is dumped to the tank.
The remaining circuit continues to supply at the reduced speed.
Three speeds
A Sunfab dual flow pump with differ¬ent large flows together with sequence valves can give three different flows.
The user uses the flows of both circuits at low pressure.
At stepped pressure the smallest flow is routed away.
At a further increase in pressure the large flow is routed away and the smaller flow is engaged again.
SL and SAVTEC®
On/Off with SAVTEC
With SAVTEC there is no need to en¬gage and disengage the power take off to drive the pump. It can remain in operation. An air or electrically operated SAVTEC opens the oil flow as necessary. Usually in conjunction with a directional valve being acti¬vated. SL pumps in the 200 series are equipped with SAVTEC.
SAVTEC has clear advantages when one needs to operate the hydraulics while moving. Vehicles for road and street maintenance such as snow ploughs and gritters or street clean¬ers are typical examples.
In principle SAVTEC is a suction shut-off valve with separate lubri¬cating and cooling oil supply to the pump for idle operation. The equip¬ment is exceptionally quiet and also fuel efficient.
参考资料:我自己写的、=。=