vent-pipe

The agency may have to assist in two areas: (1) ensuring the availability of special items such as vent-pipe screening; and (2) the provision of services requiring special equipment, such as pit emptying.

Chapter 6 1992

The agency may have to assist in two areas: (1) ensuring the availability of special items such as vent-pipe screening; and (2) the provision of services requiring special equipment, such as pit emptying.

Chapter 5 1992

The "Colt" generator made by this firm comprises a carbide hopper mounted above a generating tank containing water, and an equalising bell gasholder mounted above a seal-pot having a vent-pipe _C_ communicating with the outer air.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

There are two minor points in connexion with this form of vent-pipe often overlooked.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

Every apparatus must be fitted with a safety-valve or vent-pipe terminating in a safe place in the open, and of adequate size.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

Theoretically a non-automatic apparatus does not require a vent-pipe in its generator because all the gas enters the holder immediately, and is, or should be, unable to return through the intermediate water seal; practically such a safeguard is absolutely necessary for the reason given.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

A refinement upon this vent-pipe is represented at C, where it is rigidly fastened to the tank of the holder, and has its internal aperture always above the level of the water in the apparatus.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

The gasholder is fitted with a telescoping vent-pipe, by which gas escapes to the open in the event of the bell being raised above a certain height.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

For obvious reasons the vent-pipe of a holder should have a diameter equal to that of the gas-inlet tube, and the vent-pipe of a generator be equal in size to the gas-leading tube.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

Typical simple forms of vent-pipe suitable for acetylene apparatus are shown in Fig. 7.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield