This female thread has an internal washer than prevents the connection to your tap from leaking. 3/4" BSP Male to Female Water Butt Adapter + Tap of your Choice. The water butt on these kits is a single moulded piece with the male end coming with 2 washers and a nut and the female end having an internal washer for the tap that screws in.
eBay
Alloy mixing valve, hot and cold water faucet, bathtub switch, mixer tap, bathroom bathtub
Aliexpress UK
Size refers to the thread size of the tap in BSP.
eBay
1/2 3/4 to 1/2 3/4" 2-Way Garden Tap Garden Irrigation Water Valve Flow Control Valve For G1/2 G3/4 Tube Fittings 1 Pcs
Aliexpress UK
If you are unsure refer to the BSP size guide attached. Polypropylene Water Butt Tap & 1/2" Snap On Hose Connector. 3/4" BSP Thread. This is a strong polypropylene Water Butt Tap with a 3/4 " BSP Thread.
eBay
Garden Tools Brass Water Faucet 1/2" Outside & Inside Used Easy Turn On/Off Lever Handle Watering Supply Taps Ball Valve
Aliexpress UK
It will screw directly into any 3/4" Female BSP thread which is the most common thread that you will find on a water butt. This is a Nickle plated brass Lever type Water butt tap with a Double Outlet and a polypropylene 3/4" male thread.
eBay
Switch Faucet Adapter with Aerators,Kitchen Sink 3-Way Splitter Diverter Valve, Water Tap Connector for Toilet Bidet Shower
Aliexpress UK
Easy to install with standard size universal thread. Standard Size Thread. Black Plastic.
eBay
35L Fridge Juice Water Dispenser with Tap Cold Storage Kettle Large Capacity for Ice Beverages Refrigerator Jug
Aliexpress UK
1 x Water Butt Tap + Plastic Nuts + rubber ring. Applicable pipe joint: about 17 mm. Garden hose connector with switch. The hose connector is made of high-quality plastic. General purpose coarse thread hose connector.
eBay
Household faucet wire extractor universal anti tap tool for water pipe breakage, screw and slide wire extractor
Aliexpress UK
This Replacement Water Butt Tap by Ward is a universal tap designed for garden irrigation. Made of black plastic with a standard thread, the tap is suitable for 40L water butts and features quick and easy installation. With a circular shape and dimensions of 6 cm in diameter and 24 cm in length, this tap is lightweight at 5 kg and perfect for above ground installation in gardens and patio areas.
eBay
Garden Tools Brass Water Faucet 1/2" Outside & Inside Used Easy Turn On/Off Lever Handle Watering Supply Taps Ball Valve
Aliexpress UK
The water butt connector with a female BSP outlet is a practical and versatile solution for your rainwater collection containers. The garden bib brass tap with snap-on male quick connect outlet is a versatile and robust addition to any garden setup.
eBay
Brass 3/4 Inch Thread 2- Way Garden Tap Water Splitter Copper Y Irrigation Valve 5/8" Quick Connector Cranes Adapter 1pcs
Aliexpress UK