Impregnation fluid (BL) us added to the impregnation vessel (101) and establishes a fluid level LIQ_LEV.

In connection with the impregnation tank (2) equipment is provided for increasing the pressure in the tank, e.g., by reducing the volume of the impregnation tank or by introducing additional liquid by means of a pressure pump.

Wetted undrawn yarn (1) is forwarded by rolls (5, 6, 7, 8, 10) to a first drawing stage in a dip tank (9) and is partially drawn between rolls (10,11) under water in the dip tank (9).

A (liftable, vibratable) outlet member (2) in the outlet of a hopper, bunker, reactor or impregnation vessel and the like.

A method for impregnating wood, wherein the wood (1) is placed in an airtight impregnation tank (2) from which the air has been evacuated, and which is subjected to pressure after the introduction of the impregnating liquid (17).

In connection with the impregnation tank (2) and the storage tank (11), equipment is provided for evacuating the air or other gas from the tanks, from the wood and from the impregnating liquid (17).

A withdrawal of the transfer fluid is taken from the top of the digester and led to a position in order there to act as impregnation fluid in the impregnation vessel.

The method comprises an impregnation vessel in which to impregnate the chips, which chips are then fed to a subsequent digester vessel in a transfer fluid.

Before anodising is started the components are cleaned in a hot soak tank.

In order to improve the process in the impregnation vessel 3 are at least two independent first and second screen rows, SC1 and SC1 b respectively, installed.

This calculation will specify how much of each grade of PEG to put into the impregnating tank.

Unsteamed chips are fed into an impregnation vessel (30) in which a fluid level (LIQ_LEV) is established under the highest level (CH_LEV) of the chips.

When coloring tubular fabrics, the hose (1) continuously passes through an impregnating trough comprising a coloring liquor and then through a reducing device (10).

An in-line drainer may be provided in the feed system between a make-up liquor pump and a liquid inlet conduit leading to the top of an impregnation vessel.

The first spent liquor is circulated to an impregnation vessel, or other part of a chip feed system, to enhance the amount of sulfur present at the beginning of the cooking stage in the digester.