pump affinity laws were not suitable any more when the net head was greater than zero while VSD were used,and a new affinity law was proposed.By means of linearized pump performances at rated rotational speed,simplified methodologies predicting pumping system performances with VSD were put forward....
57 A pump head (4) has a casing (10, 20) containing an electric motor (15, 16) driving impeller means (31) for moving liquid upwardly of a pipe stack by which the pump head is suspended in the liquid. Cooling of the motor is improved by causing pumped liquid leaking between sealing...
A pressure valve (34) is connected to a pressure outlet (40), by means of which the aspirated fluid via the pressure stroke is pressable to the pressure outlet. The pressure and suction valves, together with the accommodation body (8), are integrated to form a structural commonly handleable...
1. Pump output volume:3.0,6.0,8.0 (Unit: ml/rev)2."F" means pump body material is PTFE, The gear is made of PTFE,The gear shaft is made of ceramic and sealing material Material FFKM,rotor plastic ETFE. 3.Motor: Y:Common asynchronous motor; YB:Explosion proof asynchronous mot...
characterised in that the filter and the corresponding pump are incorporated into a single technical element (11) designed to be removably supported within the tank (2) through attachment means to each of the convergent walls (5a, 5b... B Fabio,G Giacomo 被引量: 0发表: 2017年 加载更多站...
The pump's self-priming feature is a standout feature, allowing for quick and easy operation. The pump head is designed with a water storage space, which means that the first time you use it, you only need to inject water into the pump's mouth. Once filled with liquid, the pump head...
1-9999, 0 means unlimited cycle. Back suction angle 0-360° Accuracy ±0.5% Control Method Touch screen and mask keypad Start/stop, direction signal Passive switch signal, such as : foot pedal switch Active switch signal: 5V, 12V, 24V for option. Communication interfa...
For many men and women, a big head means more pleasure.Not every guy, however, has the same penis profile — some look more like spears or rockets rather than mushrooms. While the glans is spongy and difficult to change, increasing its size is possible over time and through hard work....
Method and device for filling a container with a predetermined quantity of fluid and related filling machine valve member (27) for controlling the fluid flow, a means (54) for sending a position control signal to the movable valve member (27), such that said movable valve member (28) is ...
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