초록

An oil field anti-pollution device is formed by a closed end tubular receptacle having a lid and connected by one end wall with the fluid outlet port of a gate valve on the end of an above ground storage tank horizontal drain line remote from the storage tank.

대표청구항 ▼

In a fluid storage tank having a substantially horizontal drain pipe and having a gate valve normally closing the end of the pipe remote from the tank, the improvement comprising: receptacle means including walls having upper marginal edges defining a fluid container bottom portion having a wall sec

In a fluid storage tank having a substantially horizontal drain pipe and having a gate valve normally closing the end of the pipe remote from the tank, the improvement comprising: receptacle means including walls having upper marginal edges defining a fluid container bottom portion having a wall section projecting upwardly above a plane formed by said upper marginal edges of the remaining bottom portion walls for collecting and storing fluid draining from said tank valve when the latter is in closed position; means including a pipe fitting connected with the gate valve and projecting through the upwardly projecting wall section of the container bottom portion for forming a fluid passageway from the gate valve through the container upwardly projecting wall section above the plane of the upper marginal edges of the remaining bottom portion walls; and, a tank truck hose connected with the fitting.