Assertion: liquid ethylene | /r/HasProperty | entered in liquid ethylene transfer pump
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text: Bottom valve be provided with two purposes, the one, when the surface contacts with the liquid ethylene transfer pump thereon, can under the action of gravity of liquid ethylene transfer pump, open the transfer pump well location in interior jar of inner well head (being the bottom well head), thereby liquid ethylene is entered in the liquid ethylene transfer pump of carrying pump sump inside smoothly; The 2nd, when the surface does not contact (being removed as the liquid ethylene transfer pump) with the liquid ethylene transfer pump thereon, can seal the following well head of carrying pump sump, thereby jar inner liquid ethylene and extraneous getting in touch in isolated prevent that liquid ethylene from gasifying and security incident takes place in storage tank.