Installing a drain cock

[surveyorssam]

Do the drain cocks have to be soldered in or can they be fitted to a compression fitting?

Thanks

Sam

 

[RigidRaider]

You can't solder if there's water around so a T can be soldered into dry pipework and the compression drain cock fitted to that. With wet pipework everything must be compression.

I think.

 

[Whitespirit66]

Standard drain cocks are for soldering. However, if you don't want to solder, you can fit a 15mm X 15mm X 1/2''BSP (female) compression tee to the pipe, and screw in a 1/2''BSP threaded cock to the threaded branch of the tee.

Get a type A drain cock, better than type Bs.

http://www.partridgeshadleigh.co.uk...per-x-female-15mm-x-15mm-x-12-bsp-p-2032.html

http://www.google.co.uk/products/ca...=X&ei=k0xmTsCROcik8QPBurWECg&ved=0CGMQ8wIwBA#

 

[xr4x4]

What's the difference between type a and b?

 

[Whitespirit66]

Type B, doesn't have a gland seal, and will leak when you turn the head to drain.

Type A has a gland seal. Much better.

 

[Whitespirit66]

Also to the OP. If you do solder on a drain cock, unscrew your cock's head and remove the innards before soldering.

Otherwise, you will fry the rubber washer inside.

 

[Charnwood]

Type A is glanded, and will not **** water everywhere when opened, type B is not and will.

 

[ChrisOxford]

In other words, Type A is like a proper, miniature tap. Attach a hose and away you go.

With Type B's, you need a bowl underneath to catch the drips, which needs frequent emptying. A pain.

 

[Gasop]

Drain cocks are quite happy to be fitted to compression Tees.
Never have any problems fitting like this.

 

[JimCrow]

Do the drain cocks have to be soldered in or can they be fitted to a compression fitting?

Thanks

Sam

use one of these in a compression tee,

http://www.screwfix.com/p/drain-cock-type-a-heavy-pattern-15mm/99939