Lpg fittings- left hand thread??

[philwebb]

I recently bought a gas tap to isolate my boat cooker as the previous one had developed a leak.
The tap was supplied with left hand threads, which do not match the previous nuts. The supplier
maintains that LPG fittings are now left-hand thread. Is this correct? The fittings that I have previously
bought from chandlers or plumbers merchants have all been right hand thread. Have the regulations changed recently,
or is this just b*llsh*t?

 

[prv]

I'm a bit hazy on the subject, but I have a feeling some propane fittings are left-hand while butane are right-hand.

Pete

 

[nigelmercier]

I'm a bit hazy on the subject, but I have a feeling some propane fittings ...

Propane bottles are certainly left hand thread (no idea about butane), but fittings? Surely they are just classified as LPG?

 

[VicS]

Propane bottles are certainly left hand thread (no idea about butane), but fittings? Surely they are just classified as LPG?

The small butane cylinders also have LH threads .

(AFAIK generally cylinders containing flammable gases have LH threads)

Not heard of other fittings having LH threads though.

 

[BERT T]

Only the cylinder threads are LH all other fittings are RH as I bought some last week for 8mm pipe.

 

[David2452]

Some 3/8" BSP to 8mm LPG hose tails designed to fit to appliances are certainly LH thread but to say they all are is a nonsense, it may well be that new appliances are now LH so that's what they stock them but for service replacement RH must still be available.

 

[saltylegs]

Only the cylinder connections are LH for both Propane and Butane (I have worked for Calor for almost 30 years).
All other fittings are RH.
I am currently checking and testing a wide range of gas appliances and none have LH connections.

 

[VicMallows]

(AFAIK generally cylinders containing flammable gases have LH threads)

Camping Gaz?

 

[David2452]

Only the cylinder connections are LH for both Propane and Butane (I have worked for Calor for almost 30 years).
All other fittings are RH.
I am currently checking and testing a wide range of gas appliances and none have LH connections.

Probably so with EU made apliances but certainly there are products from elsewhere that do, Companion stuff is an example, oddly enough they are from Oz / NZ so are upside down anyway.

 

[VicS]

Camping Gaz?

Generally flammable gas cylinders have LH threads. Camping gas is the only exception I know of. Probably cartridge types have RH threads as well.

 

[superheat6k]

Butane (blue) (not campingaz) and Propane (orange) both have LH threads, but the Blue butane cylinder is LH Male threaded, the Orange Propane is LH Female, so it is not possible to fit the wrong cylinder to the opposite regulator.

For current regs on the rest of the system speak to Southampton Calor Centre in Millbrook.

Er ... UK Cylinders.

 

[Alan_B]

The LPG system on my car is all left hand threads, may be a bit of truth in it.

 

[saltylegs]

Butane (blue) (not campingaz) and Propane (orange) both have LH threads, but the Blue butane cylinder is LH Male threaded, the Orange Propane is LH Female, so it is not possible to fit the wrong cylinder to the opposite regulator.

For current regs on the rest of the system speak to Southampton Calor Centre in Millbrook.

Unless you happen to be in southern Ireland where the Propane cylinders have the "F" type connection which is the same as the small UK Butane cylinders.

 

[VicMallows]

Butane (blue) (not campingaz) and Propane (orange) both have LH threads, but the Blue butane cylinder is LH Male threaded, the Orange Propane is LH Female

I think a little irony crept into the last few posts. There was also an interesting discussion about the W20 thread-form not long ago

 

[saltylegs]

The LPG system on my car is all left hand threads, may be a bit of truth in it.

Hi Alan hows the new boat?
You will find that the LH connections on Car Gas set ups are the parts that carry Liquid LPG and these are available in both LH and RH depending on the kit supplier used.