Plastic Econo Drum Pump. Measured dosage per stroke. 

Threaded to fit metal drums and adapter supplied for 25-30 litre container.

Separate accessory available on website to adapt to 205 litre plastic drums, details below.

Chemical resistant polyethylene construction to resist most chemicals, oils and detergents.

Can adjust dispense quantity per stroke from 240ml ( 8oz), 175ml ( 6oz) 115ml ( 4oz) to 60ml (2oz).

3/4 inch and 2 inch thread to fit metal drums, Closure to suit 25-30 litre container. Adapter to suit Senior Rieke Flexspout, or to fit to pail lid. Item 

Adaptor for 330 pump to fit 200 litre plastic barrels

https://www.dynamic-chemicals.co.uk/adaptor-for-330-pump-to-fit-200-litre-plastic-barrels

Adjustable measured deliveries. Ideal transfer pump for oils.

Continental Manufacturing. Model 330-12