Cast Iron Radiator Accessories

Brass bleed valve for cast iron radiators

£2.50 exc VAT

Standard ⅛" BSP Brass Bleed Valve

Will fit female thread of 10mm inside diameter. Standard right hand thread.

Eigth inch chrome bleed valve

£3.50 exc VAT

Standard ⅛" BSP Chrome Bleed Valve

Will fit female thread of 10mm inside diameter. Standard right hand thread.

Eigth inch BSP brass bleed valve

£3.50 exc VAT

Key Vented ⅛" BSP Brass Bleed Valve

Will fit female thread of 10mm inside diameter. Standard right hand thread.

Quarter inch BSP bleed valve

£4.50 exc VAT

Key Vented ¼" BSP Brass Bleed Valve

Will fit female thread of 13mm inside diameter. Standard right hand thread.

Half inch bleed valveBrass bleed valve

£5.50 exc VAT

Key Vented ½" BSP Brass Bleed Valve

Will fit female thread of 21mm inside diameter. Standard right hand thread.

Compression gasket for cast iron radiators

£0.50 exc VAT

1¼" BSP Silicone Gasket

1¼” BSP gaskets is the correct size for Castrads' King 768 and 5 Column models. 1½” BSP is a more common size for both reproduction and reclaimed cast iron radiators.

O ring for cast iron radiators

£0.50 exc VAT

1½" BSP Silicone Gasket

1½” BSP is the correct size for all Castrads’cast iron radiators except 5 Column and King 768, which use 1¼” BSP gaskets. 1½” BSP also fits reclaimed 4 column cast iron radiators.

Cast iron end cap

£4.00 exc VAT

1¼" BSP Blanking Bush (End Cap)

Right hand thread only. Requires a silicone gasket to form a watertight seal.
Not suitable for reclaimed radiators - please call 0161 2970015

Cast iron blanking bush

£4.00 exc VAT

1½" BSP Blanking Bush (End Cap)

Right hand thread only. Requires a silicone gasket to form a watertight seal.
Not suitable for reclaimed radiators - please call 0161 2970015

Bleed bush for cast iron radiators

£4.00 exc VAT

1¼" BSP to ⅛" BSP Reducing Bush

Left hand thread only. Requires a silicone gasket to form a watertight seal.
Use with a standard ⅛" bleed valve to form a bleed bush. Not suitable for reclaimed radiators - please call 0161 2970015

Cast iron bleed bush

£4.00 exc VAT

1½" BSP to ⅛" BSP Reducing Bush

Left hand thread only. Requires a silicone gasket to form a watertight seal.
Use with a standard ⅛" bleed valve to form a bleed bush. Not suitable for reclaimed radiators - please call 0161 2970015

Reducing bush to fit on a cast iron radiator

£4.00 exc VAT

1¼" BSP to ½" BSP Right Hand Thread Reducing Bush

Right hand thread only. Requires a silicone gasket to form a watertight seal.Not suitable for reclaimed radiators - please call 0161 2970015

Brass bleed valve

£4.00 exc VAT

1¼" BSP to ½" BSP Left Hand Thread Reducing Bush

Left hand thread only. Requires a silicone gasket to form a watertight seal. Not suitable for reclaimed radiators - please call 0161 2970015

Valve bush for a cast iron radiator

£4.00 exc VAT

1½" BSP to ½" BSP Right Hand Thread Reducing Bush

Right hand thread only. Requires a silicone gasket to form a watertight seal.

Reducing bush for cast iron radiators

£4.00 exc VAT

1½" BSP to ½" BSP Left Hand Thread Reducing Bush

Left hand thread only. Requires a silicone gasket to form a watertight seal. Not suitable for reclaimed radiators - please call 0161 2970015

Cast iron valve bush

£4.00 exc VAT

1½" BSP to ¾" BSP Right Hand Thread Reducing Bush

Right hand thread only. Requires a silicone gasket to form a watertight seal. Not suitable for reclaimed radiators - please call 0161 2970015

Cast iron radiator reducing bush

£4.00 exc VAT

1½" BSP to ¾" BSP Left Hand Thread Reducing Bush

Left hand thread only. Requires a silicone gasket to form a watertight seal. Not suitable for reclaimed radiators - please call 0161 2970015

Cast iron radiator nipple

£2.00 exc VAT

1¼" BSP Jointing Nipple

Left hand thread one side, right hand thread the other. Requires a silicone gasket to form a watertight seal. Use to join cast iron radiator sections together.
1¼" BSP will only fit Castrads 5 Column and King 768 models.

Joining nipple for cast iron radiators

£2.00 exc VAT

1½" BSP Jointing Nipple

Left hand thread one side, right hand thread the other. Requires a silicone gasket to form a watertight seal. Use to join cast iron radiator sections together.
1½" BSP is the correct size for most cast iron radiators except Castrads 5 Column and King 768 models.

LSX Sealant

£5.75 exc VAT

LSX Sealant

75ml tube. Highly recommended for connecting valves to radiators. Far superior to PTFE tape.

All Castrads' Cast Iron Radiators are supplied as a sealed unit.

This includes bleed valve, end bushes and ½" BSP Reducing Bushes.

Need some help?

Call Castrads direct on 0161 2970015
We're more than happy to help!

BSP Size, Inches Outside diameter, mm
⅛ 10
¼ 13
½ 21
¾ 27
1 33
1¼ 42
1½ 48
2 60
2½ 73
3 89

Can't see the sizes you need?

Castrads stocks a large range of odd sizes, and can get hold of lots of different types of end bushes, fibre gaskets, reducing bushes and more.

Call us now on
0161 2970015 - we're sure we'll be able to find what you're looking for.

Castrads stocks steel blanking plugs, cold steel and brass reducing bushes in a large variety of sizes.

Castrads also supplies assembly tools for cast iron radiators. Please call to discuss sizing options.