Help..Damaged pressure test screw on boiler

[Dave'o]

Serviced a combi boiler today..but when I was about to test to working pressure on the boiler, the previous engineer had damaged to test screw and was unable to release it.

Do you know if you can buy generic screws and where to get one from?

also..any suggestions on how to unscrew the test nipple when the screw head is buggered(preferable without damaging the gas valve)?

 

[Dannypipe]

Changed a gas valve this week. I guess I should have kept the screws as this once happened to me, and I had to ask around until someone had an old boiler they'd ripped out and I could steal the screw from.

If you get very desperate I can have a look through my bin as I only chucked it away on monday and it'll still be in there at the bottom of the big outside bin.

As for getting the buggered screw out, I used a screw removal tool from screwfix, which I pushed very hard on and twisted veeery slowly.

 

[Billy Bob Bob]

Serviced a combi boiler today..but when I was about to test to working pressure on the boiler, the previous engineer had damaged to test screw and was unable to release it.

Do you know if you can buy generic screws and where to get one from?

also..any suggestions on how to unscrew the test nipple when the screw head is buggered(preferable without damaging the gas valve)?

you cant unless you have a old gasvalve ,either buy a new gasvalve or rate it and do a fga

 

[tamz]

Use these.
Laser Combination Screw Extractor & Drill Set TCN3744 from TW Wholesale
Start with the smallest one and do it by hand.

That is why every gas guy should be slapped if they don't have a 0.8 x 4mm screwdriver.

 

[Billy Bob Bob]

well i dont have one now about this slapper are they young ,fit,cheap and free????????????

 

[moogwai]

Use these.
Laser Combination Screw Extractor & Drill Set TCN3744 from TW Wholesale
Start with the smallest one and do it by hand.

That is why every gas guy should be slapped if they don't have a 0.8 x 4mm screwdriver.

Slap me.....but I have just brought one from fleabay....was wondering what size the screwdriver should be.

Sent from my Desire HD using Tapatalk

 

[tamz]

Slap me.....but I have just brought one from fleabay....was wondering what size the screwdriver should be.

Now you know:wink_smile:

 

[Blackcatgas]

Ive made my own, you need to modify a short flat stumpy driver to get at the inlet on Vaillant 831 combis.

 

[moogwai]

Ive made my own, you need to modify a short flat stumpy driver to get at the inlet on Vaillant 831 combis.

good point....ive always struggled with these...and wonderd if vaillant made their own screwdriver for this purpose.

 

[Blackcatgas]

good point....ive always struggled with these...and wonderd if vaillant made their own screwdriver for this purpose.

Ive sugested it, it fell on deaf ears.

 

[stevetheplumber]

ive got a little angled bit holder which is perfect for hard to get to screws like vailants came with six bits in a belt clip very handy tool
9pc SECURITY PRECISION TORX TAMPER SCREWDRIVER BITS SET | eBay UK
just fill the holder with the bits you use