How to fit a small threaded outlet to a plastic tank?

Question

This should be simple, but an extensive search has turned up zero.

I have a small plastic tank and I want to fit an outlet to it with a 1/4 BSP (or NPT) female thread. Does a part exist to do this? Preferably plastic.

There are lots of them in larger pipe sizes. Basically I want this but smaller:
http://www.ebay.co.uk/itm/Plastic-Boss-Bulkhead-Fitting-IBC-Tank-outlet-Water-Tank-Fitting-Storage-Tank-/271120141402?pt=UK_BOI_FarmingEquipment_RL&var=&hash=item3f20050c5a

Amprotec · Answer

The following is the process through which you can fit a small threaded outlet to a plastic tank :

>Using a hole saw, auger or splayed bit cut a hole slightly bigger than the thread size.

>Ensure that the hole is not drilled too close to the base of the tank; at least 60mm from the bottom of the tank to the bottom of the fitting.

>Remove loose nut from outlet leaving rubber washer on fitting and push through the outlet hole from the inside of tank. In smaller tanks that you are unable to access, we suggest using a broom handle (for length) with a nail on it- place the outlet on the nail then lower into tank and slide through the hole.

>Whilst holding the fitting firmly from the inside of the tank, have someone fit the loose nut to the fitting from the outside and tighten. No other sealer is required. Do not over tighten fitting.

>Use thread tape (approx 18 times) or paste when fitting tap or gate valve.

How to fit a small threaded outlet to a plastic tank?

1 คำตอบ