Gas manifold recommendation?

[donchiquon]

Before anyone asked the question

viewtopic.php?f=38&t=76608&hilit=board

Ahah!!!! Got it!

1/4 NPT vs 1/4 BSP.....will they mate?....

ÉDIT: the man from Google...he say no...."NPT/NPS and BSP threads are not compatible due to the differences in their thread forms, and not just the fact that most sizes have a different pitch. NPT/NPS threads have a 60° angle and have flattened peaks and valleys (Sellers thread form) where as BSP threads have a 55° angle and have rounded peaks and valleys (Whitworth thread form)."

Looks like I'm importing from the states


EDIT 2: Seems like not everyone on t'internet agrees (shock!) "You rarely need an adapter because NPT fittings work just fine with BSPP or BSPT

You may have been told you should not mix BSPP with BSPT or with NPT you can ignore this crap in low pressure systems,
say under 100psi, is a well safe margin"

[demig]

There are some 1/4" npt 15psi gauges on ebay at the moment, come from China of course... about 4 quid delivered. I can't post the link for some reason but search and you'll find them.


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[donchiquon]

There are some 1/4" npt 15psi gauges on ebay at the moment, come from China of course... about 4 quid delivered. I can't post the link for some reason but search and you'll find them.


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I think I have them "water pressure gauge meter manometer" about £3.22.

Got to be worth a try! Thanks Demig!

[demig]

There are some 1/4" npt 15psi gauges on ebay at the moment, come from China of course... about 4 quid delivered. I can't post the link for some reason but search and you'll find them.


Sent from my iPhone using Tapatalk Pro

I think I have them "water pressure gauge meter manometer" about £3.22.

Got to be worth a try! Thanks Demig!

Ordered a couple myself to try!


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[f00b4r]

There are some 1/4" npt 15psi gauges on ebay at the moment, come from China of course... about 4 quid delivered. I can't post the link for some reason but search and you'll find them.


Sent from my iPhone using Tapatalk Pro

I think I have them "water pressure gauge meter manometer" about £3.22.

Got to be worth a try! Thanks Demig!

Ordered a couple myself to try!


Sent from my iPhone using Tapatalk Pro

We better order some loctite as well then

[f00b4r]

Okay a little update on available manifolds that may help others.

As mentioned already the Krome manifolds require the American NTP gauges. However my plan was also to replace one of the outputs with a gas ball lock post, in order to enable me to setup my counter pressure tap quickly and easily. It wasn't until I gathered all of the parts that I realised the ball lock post fittings are BSP thread...doh!
There are manifolds available on AliExpress (Brewsmarter as the vendor) that use the BSP thread and plenty of BSP gauges available on eBay UK so I just now need to decide whether to modify my plan, whether to replace the manifolds/gauges with BSP ones (if this latter I may have some unused Krome manifolds with appropriate gauges for sale soon) or use an adapter on those outputs.

Hopefully this info will save others a little pain though

[donchiquon]

Okay a little update on available manifolds that may help others.

As mentioned already the Krome manifolds require the American NTP gauges. However my plan was also to replace one of the outputs with a gas ball lock post, in order to enable me to setup my counter pressure tap quickly and easily. It wasn't until I gathered all of the parts that I realised the ball lock post fittings are BSP thread...doh!
There are manifolds available on AliExpress (Brewsmarter as the vendor) that use the BSP thread and plenty of BSP gauges available on eBay UK so I just now need to decide whether to modify my plan, whether to replace the manifolds/gauges with BSP ones (if this latter I may have some unused Krome manifolds with appropriate gauges for sale soon) or use an adapter on those outputs.

Hopefully this info will save others a little pain though

I wonder if there is a BSP to BSPT adapter that might help you out....

I've got two Krome manifolds and two BSPT gauges arriving this week - I've been assured by a couple of sources that BSPT should work with NPT at low pressures.

I'll let you know how I get on!

[f00b4r]

I was having a look last night Krome also do some replacement valves with MFL ends rather than barbs but MTP (male NTP) to female BSP adapters are readily available for a few quid so will probably go that route.
I would be interested to see what happens with you and the two different threads as I have seen a few places state not to try and mix them, although I guess for anyone starting form scratch it would be easier to go the AliExpress route for the manifold and then just pick up BSP gauges.

[donchiquon]

I've got two Krome manifolds and two BSPT gauges arriving this week - I've been assured by a couple of sources that BSPT should work with NPT at low pressures.

I'll let you know how I get on!

All has arrived. The BSPT gauges fit the NPT female threads very nicely - I can get 4 full turns on one manifold and 3 on the other. This is plenty for low pressure applications (I have been told!).

I'm going to loctite them in this weekend.

Make sure you use a sharp knife or bradawl to remove all the loctite from the female thread on the manifold. Mine took a good five minutes to wheedle out and prior to doing this I could only get 2 turns on the thread!

Edit: All set with loctite - I'll let you know how the leak test goes

[f00b4r]

Interesting, I will be looking forward to seeing the results of the leak test once they've had the Loctite put on.

[donchiquon]

All set up - no leaks at all. Huge improvement over the JG crows feet! (Despite looking like something out of à Jules Verne novel)

[f00b4r]

Good news on the leak test
Yes it does look very cyberpunk! I'm still debating whether to switch to 3/16 line for the gas but I guess that might depend on whether i mount internally or externally in the end.
Are you finding it much easier to set pressure now?

[donchiquon]

Good news on the leak test
Yes it does look very cyberpunk! I'm still debating whether to switch to 3/16 line for the gas but I guess that might depend on whether i mount internally or externally in the end.
Are you finding it much easier to set pressure now?

Yup, very happy with the end result. Will make controlling everything much easier e.g., diagnosing a leaking keg, isolating them etc

Ironically the low pressure gauges have shown me that the pressures that I was trying to set on the 80 psi gauges were spot on! Not what I was expecting!

Changing to 3/16 stopped a lot of my leaks caused by the JG fittings leaking because of the sideways pressure from the stiff 3/8 line.

[alexlark]

What PSI can the 3/16 take?

[f00b4r]

Ironically the low pressure gauges have shown me that the pressures that I was trying to set on the 80 psi gauges were spot on! Not what I was expecting!

Changing to 3/16 stopped a lot of my leaks caused by the JG fittings leaking because of the sideways pressure from the stiff 3/8 line.

That is surprising but at least it gives you much better controller for any changes.

I think with 3/8 you are much better using barbs and possibly stepped clamps on them to avoid sideways pressure issues.