Abstract: A pneumatically controlled assembly, system, method and device for the regulation of pressure of a gas as it flows in a pressurized line and including at least one loading valve which is set to respond to variations in pressure in conjunction with a pneumatically actuated process control valve so as to effectively regulate and maintain pressure of the gas in the pressurized line.

Abstract: The invention includes a system for monitoring the performance of an automatic dosing siphon utilized in reservoir which is a part of a wastewater treatment system. The siphon includes a bell type cover, a fluid trap having one leg extending upward into the bell, and an outlet discharge pipe connected to said trap. A flow detect switch is located in the discharge pipe. Upon siphon activation the switch is opened and a countdown timer is reset. After draining the reservoir, the switch closes and the timer starts counting down a predetermined time period. If the siphon doesn't activate, time expires and an alarm is triggered. A second system utilizes a solenoid drain valve located above the outlet portion of the siphon trap such that upon time expiring the valve opens, the tank drains, and the timer resets. The valve automatically reprimes the siphon. The system continues to monitor the siphon and initiates an alarm upon subsequent siphon failures.

Abstract: A siphon is provided having a generally S-shaped configuration with a widely flaring inlet and discharge. The siphon is adapted for use with a fluid storage tank which is positioned adjacent a trough to be flushed by the siphon. The siphon discharge opens upward onto a floor surface of the trough. The siphon inlet is provided with a weep hole. The siphon includes a trigger mechanism which activates a flushing mode of the siphon during a flushing cycle. Multiple siphons may be interconnected by the trigger mechanism so as to produce simultaneous flushing thereof.

Abstract: A gas-plug type valve has a capillary pipe for introduction of pneumatic starting control signals, a further pipe for introduction of pneumatic locking control signals, and a through-flow pipe connected with these pipes and having four straight sections and three curves which connect the sections with one another, wherein the capillary pipe is connected with a medium curve, and the further pipe is connected with the through-flow pipe in the region between an outer curve closer to an inlet end and the medium curve.

Abstract: In a siphon apparatus having at least two legs with a liquid trap therebetween, a liquid holding chamber is provided which communicates with the liquid trap through a restrictive orifice and which fills the liquid trap after the siphon is used, thereby insuring a liquid seal for the next use of the siphon. An overflow device is provided for the liquid trap which cooperates with a trigger mechanism to fill the liquid trap to a predetermined level at the same time assuring the filling of the trigger mechanism. The trigger device may be connected to a plurality of siphons, whereby each siphon flushes simultaneously when a predetermined level is reached in a tank which is to be discharged thereby. Preferably the siphons are conchoidally or spirally shaped, and the holding chamber comprises an inner void thereof.

Abstract: In a siphon apparatus having at least two legs with a liquid trap therebetween, a liquid holding chamber is provided which communicates with the liquid trap through a restrictive orifice and which fills the liquid trap after the siphon is used, thereby insuring a liquid seal for the next use of the siphon. An overflow device is provided for the liquid trap which cooperates with a trigger mechanism to fill the liquid trap to a predetermined level at the same time assuring the filling of the trigger mechanism. The trigger device may be connected to a plurality of siphons, whereby each siphon flushes simultaneously when a predetermined level is reached in a tank which is to be discharged thereby. Preferably the siphons are conchoidally or spirally shaped, and the holding chamber comprises an inner void thereof.

Abstract: A siphon apparatus is provided which includes a liquid storage reservoir in which is mounted a conchoidial-shaped siphon having an inlet end and an outlet end. A trigger device is provided and is connected to the siphon and is operable for actuating the siphon action of the siphon when a predetermined level of liquid is reached in the reservoir. The apparatus requires no moving parts for the operation thereof.

Abstract: Apparatus for pulsing the flow of the liquid between the trays of a distillation column with only a small change in liquid level. In the preferred embodiment, a dome-like capping plate is mounted over the upper end of a downcomer conduit and overlaps the portion of the downcomer which extends above the fractionation tray as a weir to form a sealed liquid passageway having the shape of an inverted U. A siphon which starts when liquid is pushed over the top of the weir is broken when the liquid level on the tray falls to the lower end of a U-shaped conduit communicating with the upper volume of the capping plate.