Bladder_tank

The technique of storing and transporting liquids through the use of flexible tanks has many advantages :

lightness

handiness

adaptability

fiability

NAUTA® FLEXIBLE TANKS provide many advantages over rigid tanks and have therefore, become very popular with both yacht-builders and boat owners.

Each of these tanks uses an extremely rugged 935-dtex nylon fabric, coated on both sides with a neoprene / nitrile compound.
Heavily lapped seams are inside-reinforced with a “doubler” to provide extra strength. All NAUTA® tanks are vulcanised to assure leakproof panels and seams for years of trouble-tree service.

All are covered by a warranty

Because of their flexibility and the NAUTA® range of sizes, these tanks can fit into almost any space, especially those odd-shaped places that would otherwise be wasted.

NAUTA® tanks are very easy to work with. Several for water and holding are available with fittings already installed. But NAUTA® ‘s construction allows custom placement of fittings to suit your particular requirements and makes it simple to install them (see fittings).

The more rigorously enforced laws against overboard discharge now make non-compliance extremely costly. A NAUTA® flexible holding tank, on the other hand, provides a relatively inexpensive Type III solution. In addition, the Teldarä lining of these NAUTA® tanks prevents gas permeation, thus stopping a major odor problem with many other holding tanks. Combined with a few other components, this solution is both legal and far less costly than replumbing a vessel or installing a more complex and expensive Type I or Type II system : it occupies less space and requires no electrical power.

1 year warranty coverage

(the illustrated example would allow those traveling into unrestricted waters to pump overboard.)

FITTING THE CONNECTIONS

The technique of storing and transporting liquids through the use of flexible tanks has many advantages :

Fitting of the connection is generally made on the same side of the tank

The position of the nipple will be so that there will be a minimum margin of 100 mm

between the connection and the edges of the tank

Use the washer (see drawing) to mark out the circumference of the hole to be made in

the support. Its dimension must be the one of the washer inside

Then cut with scissors the marked out hole and take care to separate the two walls of

the tank in order to avoid to damage the opposite wall when cutting. it is also necessary to take

care not to make a hole of a bigger diameter then the one made in ref. 2

Bring the edges of the hole nearer by pinching the fabric and introduce the base of the

nipple as a button in a button-hole

Place the washer with the edge on fabric side (in order to ensure the imperviousness)

and then the screw ring

Tighten the ring with the wrench

Check the tightening periodically and in particular some days after the fitting installation

INSTALLATION TIPS

It is advisable to install your NAUTA® flexible tank in a small “berth” which will help to insure its protection against sharp objects. This berth prevents abnormal wearing from abrasion.

Figure hose lengths with tank empty, and allow sufficient slack.
Use grommets for positioning only, not for supporting a loaded tank. When securing, it is important to remember that tanks expand when loaded; a loose fit in the deflated state or elastic tie-downs will work best.

MAINTENANCE

NAUTA® flexible tanks used for drinking water will operate more satisfactory if the following procedures are observed. Before using for the first time, partly fill the tank with warm water (50°c) and a 1% solution of mild detergent. After a few minutes, rinse with clear water and fill it again with water treated with chlorine tablets (follow package instructions for a 5% concentration). Empty after 2 hours and carefully and thoroughly rinse with clear water. These cleaning procedures should be performed with the system fully installed so that all the piping undergoes the same treatment.

When not using the tank for an extended period of time (winter layup…), keep it partly filled with water and 10% of chlorine solution. Because it is not possible to completely evacuate the tank, this procedure best prevents the development of micro-organisms which could coat the inside and contribute to a bad taste in water.
Before using the tank again to service, follow the same procedure as used with a new tank. Even if using your tank constantly, this cleaning procedure is recommended every 6 months. Do not forget that the pipes also contribute to the water’s taste and should be involved in the regular cleaning process.