Dive bottle gauge ?.

[samboy]

Hi gang.

             My gauge is looking a bit jaded so i was thinking of getting a new one. Is this a job for me or the dive centre ?.

                                                                                                                                                           Thanks all.

[steve_b_wales]

10 minutes ago, samboy said:

Hi gang.

             My gauge is looking a bit jaded so i was thinking of getting a new one. Is this a job for me or the dive centre ?.

                                                                                                                                                           Thanks all.

If the bottle is empty, you can replace the gauge yourself.

[CaptC]

6 minutes ago, steve_b_wales said:

If the bottle is empty, you can replace the gauge yourself.

Easy job but as said, make sure the bottle is empty! MDE or Best Fittings for a gauge

[oldypigeonpopper]

hello, as above but what do you mean by jaded ? I never rely on the cylinder guage but the PCP guage, Post a photo, Saying this if the Dive Centre can put on a new 300 Bar Guage that cost same as Best Fitting etc then why not !!, 

Edited 5 hours ago by oldypigeonpopper

[old'un]

10 minutes ago, steve_b_wales said:

If the bottle is empty, you can replace the gauge yourself.

Don't know what setup you have steve but the gauge on my bottle is only under pressure when connected to the rifle for filling.

[wymberley]

7 minutes ago, oldypigeonpopper said:

hello, as above but what do you mean by jaded ? I never rely on the cylinder guage but the PCP guage, Post a photo

With what frequency are your cylinder gauges and your PCP ones checked?

[oldypigeonpopper]

8 minutes ago, wymberley said:

With what frequency are your cylinder gauges and your PCP ones checked?

Hello, I have never know a Cylinder Guage and a PCP Guage read the same so rely on the PCP Guage as i have done since i have used PCP Air Rifles over 20 years

Edited 5 hours ago by oldypigeonpopper

[scarecrow243]

the bottle or compressor gauges are more accurate than the rifles gauge

[old'un]

49 minutes ago, samboy said:

Hi gang.

             My gauge is looking a bit jaded so i was thinking of getting a new one. Is this a job for me or the dive centre ?.

                                                                                                                                                           Thanks all.

If your bottle setup is as most bottle setups it will only be under pressure when filling the rifle, simple way to see this is...if after filling you close the main bottle valve and then release the line pressure with the air bleed valve you should not see a pressure reading on the gauge, if so the gauge is not under pressure and can be unscrewed and replaced.

9 minutes ago, scarecrow243 said:

the bottle or compressor gauges are more accurate than the rifles gauge

[Mr.C]

As above, never rely on the gauge on the gun.

[oldypigeonpopper]

Hello, Oh why do you think that ??,  Anyone who relies on a Compressor or Cylinder guage reading to fill a PCP Air Rifle is asking for trouble, I filled a PCP to 180 using the Guage reading on a Cylinder and it blew the seals , Turned out the Guage was faulty 

[old'un]

2 minutes ago, oldypigeonpopper said:

Hello, Oh why do you think that ??,  Anyone who relies on a Compressor or Cylinder guage reading to fill a PCP Air Rifle is asking for trouble, I filled a PCP to 180 using the Guage reading on a Cylinder and it blew the seals , Turned out the Guage was faulty 

Well that can work both ways, you could have faulty rifle gauge?

[oldypigeonpopper]

3 minutes ago, Mr.C said:

As above, never rely on the gauge on the gun.

Hello, What is the point of a Guage then ???, There are PCPs that have no Air Guage so you would need to rely on your Air Filling system guage being correct, 

[wymberley]

20 minutes ago, oldypigeonpopper said:

so rely on the PCP Guage as i have done since i have used PCP Air Rifles over 20 years

Agh! You have me there. I can only speak as an fluid power engineer on both aircraft and in the commercial sector albeit now well retired. If my cylinder gauge and PCP one did not agree within a reasonable amount, I'd want to know why.

[oldypigeonpopper]

2 minutes ago, old'un said:

Well that can work both ways, you could have faulty rifle gauge?

Hello, Yes you can but on every PCP i have used the Guage was calibrated as i always had them serviced on purchase except the P15 which is new and guage was checked by seller

[arjimlad]

The needle on my bottle gauge has fallen off - I had understood it can be replaced easily as it is not under pressure until the bottle valve is opened. I just have to get one with the same thread & use a bit of PTFE tape. 

[JKD]

4 minutes ago, oldypigeonpopper said:

Hello, What is the point of a Guage then ???, There are PCPs that have no Air Guage so you would need to rely on your Air Filling system guage being correct, 

There is a huge difference between safe/recommended filling pressure and maximum fill pressure 👍 ie, recommended fill pressure 200,,,, maximum fill pressure probably over 300. Safety at these pressures is paramount !

I use both guages. The bottle guage for volume remaining, and the gun's [HW100] guage for fill pressure. If that goes faulty, it's the gun's 'problem' [warranty/fault].

[oldypigeonpopper]

Hello, going back to Sams post if that was me i would be getting the Guage checked out by the Dive Centre and replaced if required, If that is Sams main place to get his cylinder fill then the Dive centre will know his PCP Cylinder is in good order when a new test needed, It is a shame we do not get the same Service from Oxford Dive Centre, But DB Guns Thame are very good for filling PCP Air Cylinders

[oldypigeonpopper]

2 minutes ago, arjimlad said:

The needle on my bottle gauge has fallen off - I had understood it can be replaced easily as it is not under pressure until the bottle valve is opened. I just have to get one with the same thread & use a bit of PTFE tape. 

Hello, Please be careful if that is what you do, I have seen what compressed air cylinders do when the guage was faulty, You have quite a few Dive Shops around Bristol, That would be my first call even if it meant a new Guage, 

[old'un]

12 minutes ago, oldypigeonpopper said:

Hello, going back to Sams post if that was me i would be getting the Guage checked out by the Dive Centre and replaced if required, If that is Sams main place to get his cylinder fill then the Dive centre will know his PCP Cylinder is in good order when a new test needed, It is a shame we do not get the same Service from Oxford Dive Centre, But DB Guns Thame are very good for filling PCP Air Cylinders

why pay a dive centre to replace a pressure gauge when you can buy one for around £25?

[oldypigeonpopper]

40 minutes ago, old'un said:

why pay a dive centre to replace a pressure gauge when you can buy one for around £25?

Hello, I agree you can buy Guages for PCP Air Cylinders a bit cheaper than a Dive Shop maybe but if they are your main way of filling your PCP cylinder than for a bit extra cost i would not worry, I have seen first hand what happens with Compressed Air Cylinders when things go wrong when i worked on the Didcot Power Station Project as a Welder, 

Edited 4 hours ago by oldypigeonpopper

[wymberley]

2 hours ago, CaptC said:

Easy job but as said, make sure the bottle is empty! MDE or Best Fittings for a gauge

Unless it's part of a service or inspection where the cylinder will be refilled on completion of the work, there's good reason why you should never empty a cylinder which remains so for a while. With the outlet valve closed and the vent open you're good to go with regard to changing the gauge.