This large inspection port for (bio)diesel fuel, fresh water and waste water tanks has a flange-in-ring design which makes installing the port very easy in tanks constructed from most common materials.

With a Ø120 mm diameter the port meets the ISO21487 regulations for fuel tanks.

The counter flange and rubber seal are inserted in a Ø159 mm hole in the tank and then tightened by 4 bolts.

When compressed, the rubber seal expands sideways to lock the inspection port into the tank. Cleaning and inspecting the tank has never been this easy.

  • Dimension Ø120 mm / 159 mm hole
  • Suitable for G.R.P., stainless steel and plastic tanks with different wall thicknesses

  • Order separately: VSAW159 Ø159 mm hole saw for plastic, G.R.P. or stainless steel tanks
Shipping and returns

Shipping and customer service

We use Australia Post Eparcel for shipping if goods within Australia. If you would like to use an alternative shipping method please Contact Us and we can discuss alternatives.

When you contact us, a real person will call you back! This is what separates us from our competitors. We are a real store on QLD's Gold Coast with over 30 years experience in boating and Customer care.

Returns policy

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at

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Postal Address:

PO Box 138, Main Beach QLD 4217

Street Address:

Southport Yacht Club, Macarthur Parade, Main Beach QLD 4217

Trading Hours

Monday - Friday - 7.30am – 5pm
Saturday - 8am to 4pm
Sunday - 8am to 12noon


(07) 55 911 911 | Fax (07) 55 916 147


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