Doc

[rocketmanbkk]

Can anyone tell me what the difference is with type A & B DOC's please

Thx

Rct

 

[ShaunCorbs]

the retainer

a

b

 

[rocketmanbkk]

The retainer on type b is bigger?

So, what do you use most?

I used a type a today on a rad drain.

Tbh, I didn't know there were type a & B!!

 

[ShaunCorbs]

The retainer on type b is bigger?

So, what do you use most?

I used a type a today on a rad drain.

Tbh, I didn't know there were type a & B!!

no b doesnt have a retainer you can unscrew the shaft all the way out

a you have to remove the retainer to remove the shaft

 

[rocketmanbkk]

Ah, I see, Thx Shaun

The top part, thx, where the washer is located.

Any pros or cons?

Anyone better to use?

Thx again

 

[ShaunCorbs]

Ah, I see, Thx Shaun

The top part, thx, where the washer is located.

Any pros or cons?

Anyone better to use?

Thx again

not a problem and yes a dont leak when fully open

i only fit a

 

[rocketmanbkk]

Thx. I'll stick to A also then.

 

[Best]

A type drain cocks have a seal on the shaft which stops, in theory, water running past the shaft when you use the drain. As far as I know they are regulation to use on cylinders etc inside homes

 

[rocketmanbkk]

Thx Best

 

[plumben]

I use type A Ive got a hole tilt bin full of them as I always get plenty when doing a boiler swap but only ever end up using one or two half the time