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Brass Water Drain Taps

Important note on BSP thread sizes

BSP thread sizes do not match the diameter you will measure across the hole or the outside of the thread. For example:

  • A hole that measures roughly 3/8" across will usually require a 1/4 BSP fitting

  • A 3/8 BSP fitting is significantly larger than 3/8" when measured

This is because BSP sizes are based on the nominal bore of the original pipe, not the measured thread diameter. If in doubt, we strongly recommend:

  • Measuring the hole diameter

  • Checking against a BSP size chart

  • Or contacting us before ordering — we’re always happy to help

Returns caused by incorrect size selection may incur a handling charge.

Products

Premium Brass Bent Nose Water Drain Tap 1/8 BSP
 
(4 reviews)  

Premium quality brass water drain taps suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/8" BSP thread.

£21.60 including VAT
Qty
Budget Brass Bent Nose Water Drain Tap 1/4BSP
 
(2 reviews)  

A budget grade brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/4" BSP thread.

A functional "no frills" product for those on a budget.

£9.90 including VAT
Qty
Premium Brass Bent Nose Water Drain Tap 1/4 BSP
 
(3 reviews)  

Excellent quality brass water drain taps suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/4" BSP thread.

£22.20 including VAT
Qty
Premium Brass Bent Nose Water Drain Tap 3/8 BSP
 
(3 reviews)  

Premium quality brass water drain taps suitable for a wide range of stationary engines.

The body of the tap incorporates a male 3/8" BSP thread.

£24.00 including VAT
Qty
Budget Brass Bent Nose Water Drain Tap 3/8BSP
 
(0 reviews)  

A budget grade brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 3/8" BSP thread.

A functional "no frills" product for those on a budget.

£8.94 including VAT
Qty
Premium Brass Bent Nose Water Drain Tap 1/2BSP
 
(2 reviews)  

Quality brass water drain tap suitable for a wide range of larger stationary engines.

The body of the tap incorporates a male 1/2" BSP thread.

£30.00 including VAT
Qty
Premium Brass Bent Nose Water Drain Tap 3/4BSP
 
(0 reviews)  

Quality brass water drain tap suitable for a wide range of larger stationary engines.

The body of the tap incorporates a male 3/4" BSP thread.

£36.00 including VAT
Qty
Premium Brass Straight Nose Water Drain Tap 1/8 BSP
 
(1 reviews)  

Premium quality brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/8" BSP thread.

The valve mechanism is 1/4 turn meaning the handle will rotate 360 degrees changing between open and closed every 90 degrees.

£19.85 including VAT
Qty
Budget Brass Straight Nose Water Drain Tap 1/4BSP
 
(0 reviews)  

A budget grade brass straight water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/4" BSP thread.

A functional "no frills" product for those on a budget.

£8.94 including VAT
Qty
Premium Brass Straight Nose Water Drain Tap 1/4BSP
 
(1 reviews)  

Premium quality brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 1/4" BSP thread.

The valve mechanism is 1/4 turn meaning the handle will rotate 360 degrees changing between open and closed every 90 degrees.

£21.60 including VAT
Qty
Budget Brass Straight Nose Water Drain Tap 3/8BSP
 
(0 reviews)  

A budget grade brass straight water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 3/8" BSP thread.

A functional "no frills" product for those on a budget.

£12.95 including VAT
Qty
Premium Brass Straight Nose Water Drain Tap 3/8 BSP
 
(2 reviews)  

Premium quality brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 3/8" BSP thread.

The valve mechanism is 1/4 turn meaning the handle will rotate 360 degrees changing between open and closed every 90 degrees.

£22.44 including VAT
Qty
Premium Brass Straight Nose Water Drain Tap 3/8BSP - Made In Britain
 
(0 reviews)  

Excellent quality British made brass water drain tap suitable for a wide range of stationary engines.

The body of the tap incorporates a male 3/8" BSP thread.

The valve meachanism is 1/4 turn meaning the handle will rotate 360 degrees changing between open and closed every 90 degrees.

£22.80 including VAT
Market price: £33.24 save 31%
Qty
Wolseley WD & WLB Brass Water Drain Tap
 
(3 reviews)  

A Wolseley WD and WLB brass water drain tap and adapter union.

A quality brass water drain tap supplied with a suitable brass union to convert to a female 1/2" BSP socket. This will screw onto the end of the water drain pipe which is available separately.

Equivalent to Wolseley P/N WD317

 

£15.65 including VAT
Qty
Brass Fuel Filter Mesh
 
(23 reviews)  
A fine brass fuel filter mesh suitable for use in fuel tanks and filter assemblies. 
 
Also found in fuel taps and carburetor float chambers.
£3.98 including VAT
Qty