soldering with mapp/oxygen

[Yuri B.]

Hello
In the face of the recent tragic accidents in Australia...
Is it (safe and) efficient to use mapp/oxygen for soldering of pipes of say up to 3/4 inch? If I bought a rothenberger torch said to be intended for use with "all conventional fuels" plus oxygen, how successfull I would be if I used it with mapp gas? I know the new mapps are sort of crap, also, acetylen/oxy flame with its intensity, the sort of CO2 hood around it, etc features cannot be beaten by anything, but still.

PS The in-air flame temperatures they quote for rothenberger gases are multigas 300 - 1900C, maxigas 400 - 2200C, mapp - 2400C.

[paul_h]

This may be an expensive option for you, but worth it for the odd compressor change like I do, not worth it for someone brazing pipes in the field all day as the oxygen cylinder is $60 and only lasts 30min worth of brazing.
http://www.tesuco.com.au/Home/08_Oxy...ng_Set.pdf.pdf

I've used that set of oxy/MAPP for 3/4" and 5/8" no problems. Just as quick and hot as oxy-acet.
I bought it months ago for extra storage room in my ute compared to the room that oxy - acet and regulators and hose set takes up, and for the safety aspect.
Of course disposable oxy cylinders are expensive, and it is harder to light when it's windy (need very little MAPP pressure to get it going, it blows out at lot easier that acet when opening the oxy if you get it wrong or it's super windy, there is a reason why we use acet after all!

but worth it to keep it for unexpected small jobs or roof top jobs, and keep the oxy acet gear in a secured area in a shed, but carefully transport it for the bigger jobs, ie don't leave oxy - acet in the van as part of the furniture everyday fixture.

So the disposable turboset 200 cylinders won't cost you anything just to keep stocked in the van, and you can bill for their use if you need them on the spot.

[MikeHolm]

I do almost everything with a turbo torch and disposable MAPP and that includes soft soldering 3" copper and brazing up to 3/4". I just picked up the dual tip that approaches the pipe at about 150deg angles which i hope will do 3/4" and 1" easily. I have a small acet tank but seldom take it anywhere.

[monkey spanners]

Have a double barrel mapp turbo torch that has done 1 3/8" inside with no draught, and the single barrel turbo snake and rothenberger thing that will do 7/8" in similar conditions.

Is you have something big like a drier or comp then you can use two torches to get it hot then carry on with the one.

I tend to use them mostly for ac or liquid lines on ref, with the oxy kit for bigger pipes.

[Yuri B.]

Thank you for sharing your experience! Is it truth or bluffs - the claims of the manufacturers that their torches are only intended to be used with their gases, and vice versa. Oxygen especially, for instance, is not it the same everywhere, essentially?

Most importantly, can "mapp's" be used in place of "maxigase's", in general?

[monkey spanners]

Think the connections and different on different brands of disposable fuel gas and the oxygen cylinders also.

We have a oxy mapp set that uses refillable oxy bottles and disposable mapp ones, but not as portable as small set ups.

[Yuri B.]

Do you think content plays no role?
I barely I can allow myself a tesuco , or a wortington mapp/oxy torch as I dont know whether the ballons would be sent. Allmost all here to us is rothenberger, but rothenberger does not produce mapp/oxy torches - for what reason, is unclear to me. (They do maxigas/oxy, but this gas is much cheaper and lower temperature, that is why my current interest)

[monkey spanners]

Can you get the 500g mapp tanks like this?

http://www.londontools.co.uk/Rothenb...-Gas-453g.html

Dave has a set that uses mapp with normal refillable oxygen bottles like a big oxy acc set up, i could try and get some pics or a vid if you are interested.

Jon

[chilliwilly]

I use a hobby oxygen cylinder from Adams gas and as a fuel gas I use a 3.7 kg propane cylinder when I'm using my clocks and shank. I have used propane on its own with a 1 1/4" Bullfinch blowlamp attachment when working inside, but outside when its windy its a different story. I have braized up to 7/8" with it, and I just begrudge paying unnecessary charges to BOC for dreamt up charges. I would rather pay a one of fee and get the cylinder recharged when its empty, especially for the amount of use it gets. I used to have a BOC oxy cylinder that a friend use to fill for me when it was empty, but he lost his decanting hose.

All fuel gasses can be dangerous when they're being used and when they're being stored, especially in the back of the van. I never understood what they tell you on the pipework and brazing course regarding an acetylene cylinder. That an acetylene cylinder should be left for at least 1/2 hour in an upright position when its been laid flat to let the liquid drain back down into the cylinder?

I actually possess an FJTP1 C&G welding certficate back from 1982, but they still said I had to do the assessment, despite knowing more about joining metals than the assessor.

[MikeHolm]

I was sure there was a thread standard that was used on the tanks like the rothenberger mappgas. I do know that the tips are all proprietary so you can't put an acet tip on a mapp handle or a Turbotorch tip on a Goss handle. with my turbotorch i buy from 6-8 different brands of tanks, depending what is available.

[install monkey]

just a health ans safety tip- mapp gas is carcinogenic!! be safe out there
Material Safety Data Sheet
Product name
AIRGAS INC., on behalf of its subsidiaries
259 North Radnor-Chester Road
Suite 100
Radnor, PA 19087-5283
1-610-687-5253
Product use
MSDS #
Date of
Preparation/Revision
In case of emergency
Section 1. Chemical product and company identification
MAPP GAS (Petroleum Gas, MAPD)
:
:
:
:
Supplier
1-866-734-3438
Synonym :
MAP,MAPP,Methyacetylene-Propadiene, Mixture of Methylacetylene and Propadiene
:
:
Inhalation
Emergency overview
Section 2. Hazards identification
Routes of entry
Potential acute health effects
Acts as a simple asphyxiant.
Liquid or cold gas may cause frostbites.
Ingestion is not a normal route of exposure for gases
Liquid or cold gas may cause frostbites.
Eyes
Skin
Inhalation
Ingestion
Physical state
Gas.
See toxicological information (section 11)
DANGER!
FLAMMABLE GAS.
MAY CAUSE FLASH FIRE.
CONTAINS MATERIAL THAT CAN CAUSE TARGET ORGAN DAMAGE.
CONTENTS UNDER PRESSURE.
Keep away from heat, sparks and flame. Do not puncture or incinerate container.
Contains material that can cause target organ damage. Use only with adequate
ventilation. Keep container closed.
:
:
:
:
:
:
:
Not applicable
Medical conditions
aggravated by overexposure
Pre-existing disorders involving any target organs mentioned in this MSDS as being at
risk may be aggravated by over-exposure to this product.
Potential chronic health
effects
:
:
Contact with rapidly expanding gases can cause frostbite.
Target organs :
Contains material which causes damage to the following organs: upper respiratory tract,
skin, eyes.
Contains material which may cause damage to the following organs: the nervous
system, central nervous system (CNS).
Section 3. Composition, Information on Ingredients
Name CAS number % Volume Exposure limits
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MAPP GAS (Petroleum Gas, MAPD)
Propylene 115-07-1 40 - 50
ACGIH TLV (United States, 1/2009).
TWA: 500 ppm 8 hour(s).
ACGIH TLV (United States, 1/2005).
TWA: 500 ppm 8 hour(s). Form: All forms
Methyl Acetylene 74-99-7 27 - 33
ACGIH TLV (United States, 1/2009).
TWA: 1640 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1650 mg/m³ 10 hour(s).
TWA: 1000 ppm 10 hour(s).
OSHA PEL (United States, 11/2006).
TWA: 1650 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1650 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
1,2-Propadiene (Allene) 463-49-0 13 - 15
TLV (Philippines, 1/1978).
TLV: 1800 mg/m³ 8 hour(s).
TLV: 1000 ppm 8 hour(s).
Ministry of Labor (Republic of Korea,
6/2008).
STEL: 1250 ppm 15 minute(s).
STEL: 2250 mg/m³ 15 minute(s).
TWA: 1000 ppm 8 hour(s).
TWA: 1800 mg/m³ 8 hour(s).
Isobutane 75-28-5 2 - 5
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1900 mg/m³ 10 hour(s).
TWA: 800 ppm 10 hour(s).
N-Butane 106-97-8 2 - 5
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1900 mg/m³ 10 hour(s).
TWA: 800 ppm 10 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1900 mg/m³ 8 hour(s).
TWA: 800 ppm 8 hour(s).
Propane 74-98-6 1 - 5
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1800 mg/m³ 10 hour(s).
TWA: 1000 ppm 10 hour(s).
OSHA PEL (United States, 11/2006).
TWA: 1800 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1800 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
In case of contact, immediately flush eyes with plenty of water for at least 15 minutes.
DO NOT remove contact lenses, if worn. Obtain medical attention without delay,
preferably from an ophthalmologist.
Immediately warm frostbite area with warm water (not to exceed 40.5 C, 105F).
Remove contaminated clothing and shoes. Wash clothing before reuse. Clean shoes
thoroughly before reuse. Get medical attention.
Section 4. First aid measures
Eye contact
Skin contact
:
:
No action shall be taken involving any personal risk or without suitable training.If it is suspected that fumes are still present,
the rescuer should wear an appropriate mask or self-contained breathing apparatus.It may be dangerous to the person
providing aid to give mouth-to-mouth resuscitation.
Frostbite
:
Try to warm up the frozen tissues and seek medical attention.
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MAPP GAS (Petroleum Gas, MAPD)
As this product is a gas, refer to the inhalation section.
Move exposed person to fresh air. If not breathing, if breathing is irregular or if
respiratory arrest occurs, provide artificial respiration or oxygen by trained personnel.
Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention
immediately.
Inhalation
Ingestion
:
:
Lowest known value: 286.85°C (548.3°F) (Butane).
Flammable.
Decomposition products may include the following materials:
carbon dioxide
carbon monoxide
Lowest known value: Closed cup: -108.15°C (-162.7°F). (propene)
Lower: 2% Upper: 13%
In case of fire, use water spray (fog), foam or dry chemical.
Section 5. Fire-fighting measures
Flammability of the product
Auto-ignition temperature
Flash point
Flammable limits
Products of combustion
Fire-fighting media and
instructions
In case of fire, allow gas to burn if flow cannot be shut off immediately. Apply water from
a safe distance to cool container and protect surrounding area. If involved in fire, shut
off flow immediately if it can be done without risk.
Contains gas under pressure. Extremely flammable. In a fire or if heated, a pressure
increase will occur and the container may burst or explode. Gas may accumulate in low
or confined areas or travel a considerable distance to a source of ignition and flash back,
causing fire or explosion.
Special protective
equipment for fire-fighters
Fire-fighters should wear appropriate protective equipment and self-contained breathing
apparatus (SCBA) with a full face-piece operated in positive pressure mode.
:
:
:
:
:
:
:
Immediately contact emergency personnel. Keep unnecessary personnel away. Use
suitable protective equipment (section 8). Shut off gas supply if this can be done safely.
Isolate area until gas has dispersed.
Immediately contact emergency personnel. Stop leak if without risk. Note: see section 1
for emergency contact information and section 13 for waste disposal.
Environmental precautions
Section 6. Accidental release measures
:
Avoid dispersal of spilled material and runoff and contact with soil, waterways, drains
and sewers.
Personal precautions
:
Methods for cleaning up
:
Keep container in a cool, well-ventilated area. Keep container tightly closed and sealed
until ready for use. Avoid all possible sources of ignition (spark or flame). Segregate
from oxidizing materials. Cylinders should be stored upright, with valve protection cap in
place, and firmly secured to prevent falling or being knocked over. Cylinder temperatures
should not exceed 52 °C (125 °F).
Use only with adequate ventilation. Use explosion-proof electrical (ventilating, lighting
and material handling) equipment. High pressure gas. Do not puncture or incinerate
container. Use equipment rated for cylinder pressure. Close valve after each use and
when empty. Keep container closed. Keep away from heat, sparks and flame. To avoid
fire, eliminate ignition sources. Protect cylinders from physical damage; do not drag, roll,
slide, or drop. Use a suitable hand truck for cylinder movement.
Section 7. Handling and storage
Handling
Storage
:
:
Use only with adequate ventilation. Use process enclosures, local exhaust ventilation or
other engineering controls to keep worker exposure to airborne contaminants below any
recommended or statutory limits. The engineering controls also need to keep gas, vapor
or dust concentrations below any lower explosive limits. Use explosion-proof ventilation
equipment.
Section 8. Exposure controls/personal protection
Engineering controls
Personal protection
:
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MAPP GAS (Petroleum Gas, MAPD)
propene
ACGIH TLV (United States, 1/2009).
TWA: 500 ppm 8 hour(s).
ACGIH TLV (United States, 1/2005).
TWA: 500 ppm 8 hour(s). Form: All forms
propyne
ACGIH TLV (United States, 1/2009).
TWA: 1640 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1650 mg/m³ 10 hour(s).
TWA: 1000 ppm 10 hour(s).
OSHA PEL (United States, 11/2006).
TWA: 1650 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1650 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
allene
TLV (Philippines, 1/1978).
TLV: 1800 mg/m³ 8 hour(s).
TLV: 1000 ppm 8 hour(s).
Ministry of Labor (Republic of Korea, 6/2008).
STEL: 1250 ppm 15 minute(s).
STEL: 2250 mg/m³ 15 minute(s).
TWA: 1000 ppm 8 hour(s).
TWA: 1800 mg/m³ 8 hour(s).
Isobutane
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1900 mg/m³ 10 hour(s).
TWA: 800 ppm 10 hour(s).
Butane
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1900 mg/m³ 10 hour(s).
TWA: 800 ppm 10 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1900 mg/m³ 8 hour(s).
TWA: 800 ppm 8 hour(s).
propane
ACGIH TLV (United States, 1/2009).
TWA: 1000 ppm 8 hour(s).
NIOSH REL (United States, 6/2009).
TWA: 1800 mg/m³ 10 hour(s).
TWA: 1000 ppm 10 hour(s).
OSHA PEL (United States, 11/2006).
TWA: 1800 mg/m³ 8 hour(s).
Product name
Use a properly fitted, air-purifying or air-fed respirator complying with an approved
standard if a risk assessment indicates this is necessary. Respirator selection must be
based on known or anticipated exposure levels, the hazards of the product and the safe
working limits of the selected respirator.
Safety eyewear complying with an approved standard should be used when a risk
assessment indicates this is necessary to avoid exposure to liquid splashes, mists or
dusts. Monogoggles.
Personal protective equipment for the body should be selected based on the task being
performed and the risks involved and should be approved by a specialist before handling
this product. Neoprene and Nitrile (NBR).
Eyes
Skin
Respiratory
:
:
:
Personal protection in case
of a large spill
:
Self-contained breathing apparatus (SCBA) should be used to avoid inhalation of the
product.
Chemical-resistant, impervious gloves complying with an approved standard should be
worn at all times when handling chemical products if a risk assessment indicates this is
necessary.
Hands :
The applicable standards are (US) 29 CFR 1910.134 and (Canada) Z94.4-93
Build 1.1
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MAPP GAS (Petroleum Gas, MAPD)
TWA: 1000 ppm 8 hour(s).
OSHA PEL 1989 (United States, 3/1989).
TWA: 1800 mg/m³ 8 hour(s).
TWA: 1000 ppm 8 hour(s).
Consult local authorities for acceptable exposure limits.
-102.8°C (-153°F) This is based on data for the following ingredient: propyne. Weighted
average: -152.56°C (-242.6°F)
Highest known value: 2 (Air = 1) (Isobutane). Weighted average: 1.47 (Air = 1)
Lowest known value: 91.9°C (197.4°F) (propene).
42 g/mol
Melting/freezing point
Section 9. Physical and chemical properties
Molecular weight
Critical temperature
Vapor density
:
:
:
:
Gas Density (lb/ft
3) :
Weighted average: 0.11
The product is stable.
Conditions to avoid: Stable as mixed; however, contains unstable materials
(methylacetylene and propadiene). Weathering off (evaporation of light components)
may allow concentration of the methylacetylene and propadiene to reach concentrations
which would make mixture unstable on heating. Avoid heating of mixture or venting of
lights that could cause lighter materials to weather off(evaporate).
Extremely reactive or incompatible with oxidizing agents.
Reactive with metals.
|Additionally, avoid contact with acetylide-forming metals (copper,silver and mercury).
Copper alloys (such as brass) containing sixty six percent (66%) or more of copper
should not be exposed to MAPD.
May Occur.
Conditions to Avoid: Elevated tempertures and pressures. Polymerization catalysts,
such as metal alkyls, can cause uncontrolled polymerization. Contamination with oxygen
can cause propadiene to form hazardous peroxides.
INHIBITORS/STABILIZERS
An ihibitor is added to the MAPD mixture to prevent potential unstable peroxide
formation. Butanes (iso and/or normal) are also added to the MAPD mixture to prevent
potential concentration of the methylacetylene and propadiene from reaching
concentration levels that would render the mixture unstable in case of weathering off
(evaporation of light components).
Under normal conditions of storage and use, hazardous decomposition products should
not be produced.
Section 10. Stability and reactivity
Stability and reactivity
Incompatibility with various
substances
Hazardous decomposition
products
Hazardous polymerization
:
:
:
:
Section 11. Toxicological information
Specific effects
Carcinogenic effects
See ACGIH Carcinogen classification.
Mutagenic effects
No known significant effects or critical hazards.
CARCINOGENIC EFFECTS
: Classified A4 (Not classifiable for humans or animals.) by
ACGIH [Petroleum Gas, Liquefied (MAPD, MAPP GAS)].
Chronic effects on humans :
Toxicity data
:
:
Isobutane LC50 Inhalation
Vapor
Rat 658000 mg/m3 4 hours
LC50 Inhalation
Gas.
Rat 57 pph 15 minutes
Butane LC50 Inhalation
Vapor
Rat 658 g/m3 4 hours
Product/ingredient name Result Species Dose Exposure
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MAPP GAS (Petroleum Gas, MAPD)
Reproduction toxicity
:
No known significant effects or critical hazards.
Products of degradation: carbon oxides (CO, CO
2) and water.
Section 12. Ecological information
Products of degradation :
Environmental fate :
Not available.
Environmental hazards :
No known significant effects or critical hazards.
Toxicity to the environment :
Not available.
Aquatic ecotoxicity
Not available.
Section 13. Disposal considerations
Product removed from the cylinder must be disposed of in accordance with appropriate Federal, State, local
regulation.Return cylinders with residual product to Airgas, Inc.Do not dispose of locally.
Section 14. Transport information
DOT Classification
2.1 -
TDG Classification
2.1
Methyl Acetylene and
Propadiene mixtures,
stabilized
UN1060 Methyl Acetylene and
Propadiene mixtures,
stabilized
Regulatory
information
UN number Proper shipping
name
Class Packing group Label Additional
information
UN1060
Explosive
Limit and
Limited
Quantity
Index
0.125
ERAP Index
3000
Passenger
Carrying
Road or Rail
Index
Forbidden
Mexico
Classification
UN1060 Methyl Acetylene and
Propadiene mixtures,
stabilized
2.1 -
Not applicable (gas).
Not applicable (gas).
Not applicable (gas).
“Refer to CFR 49 (or authority having jurisdiction) to determine the information required for shipment of the
product.”
Section 15. Regulatory information
U.S. Federal regulations
United States inventory (TSCA 8b):
All components are listed or exempted.
SARA 302/304/311/312 extremely hazardous substances
: No products were found.
SARA 302/304 emergency planning and notification
: No products were found.
SARA 302/304/311/312 hazardous chemicals
: propene; Isobutane; Butane; allene;
propyne; propane
SARA 311/312 MSDS distribution - chemical inventory - hazard identification
:
propene: Fire hazard, Sudden release of pressure; Isobutane: Fire hazard, Sudden
release of pressure; Butane: Fire hazard, Sudden release of pressure; allene: Fire
hazard, Sudden release of pressure; propyne: Fire hazard, reactive; propane: Fire
hazard, Sudden release of pressure
:
United States
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MAPP GAS (Petroleum Gas, MAPD)
Connecticut Carcinogen Reporting:
None of the components are listed.
Connecticut Hazardous Material Survey:
None of the components are listed.
Florida substances:
None of the components are listed.
Illinois Chemical Safety Act:
None of the components are listed.
Illinois Toxic Substances Disclosure to Employee Act:
None of the components are
listed.
Louisiana Reporting:
None of the components are listed.
Louisiana Spill:
None of the components are listed.
Massachusetts Spill:
None of the components are listed.
Massachusetts Substances:
The following components are listed: PROPYLENE
(PROPENE); PROPYNE; ISOBUTANE; BUTANE; PROPANE
Michigan Critical Material:
None of the components are listed.
Minnesota Hazardous Substances:
None of the components are listed.
New Jersey Hazardous Substances:
The following components are listed:
PROPYLENE; 1-PROPENE; METHYL ACETYLENE; 1-PROPYNE; PROPADIENE; 1,2-
PROPADIENE; Isobutane; PROPANE, 2-METHYL-; BUTANE; PROPANE
New Jersey Spill:
None of the components are listed.
New Jersey Toxic Catastrophe Prevention Act:
None of the components are listed.
New York Acutely Hazardous Substances:
None of the components are listed.
New York Toxic Chemical Release Reporting:
None of the components are listed.
Pennsylvania RTK Hazardous Substances:
The following components are listed: 1-
PROPENE; 1-PROPYNE; PROPANE, 2-METHYL-; BUTANE; PROPANE
Rhode Island Hazardous Substances:
None of the components are listed.
Clean Water Act (CWA) 307
: No products were found.
Clean Water Act (CWA) 311
: No products were found.
Clean Air Act (CAA) 112 accidental release prevention
: propene; Isobutane; Butane;
allene; propyne; propane
Clean Air Act (CAA) 112 regulated flammable substances
: propene; Isobutane;
Butane; allene; propyne; propane
Clean Air Act (CAA) 112 regulated toxic substances
: No products were found.
State regulations
CEPA DSL: Propylene; Isobutane; Butane; propadiene; Methyl Acetylene; Propane
CPR Compliance: This product has been classified with a hazard criteria of the CPR,
and the MSDS contains all the information required for CPR.
WHMIS (Canada)
Class B1: Flammable Gases
Class A: Compressed Gas
:
:
SARA 313
Form R - Reporting
requirements
Propylene 115-07-1 40 - 50
Supplier notification
Propylene 115-07-1 40 - 50
:
:
Canada
Product name CAS number Concentration
SARA 313 notifications must not be detached from the MSDS and any copying and redistribution of the MSDS shall
include copying and redistribution of the notice attached to copies of the MSDS subsequently redistributed.
Section 16. Other information
FLAMMABLE GAS.
MAY CAUSE FLASH FIRE.
CONTAINS MATERIAL THAT CAN CAUSE TARGET ORGAN DAMAGE.
CONTENTS UNDER PRESSURE.
Label requirements :
Label requirements :
Class B1: Flammable Gases
Class A: Compressed Gas
United States
Canada
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MAPP GAS (Petroleum Gas, MAPD)
Notice to reader
To the best of our knowledge, the information contained herein is accurate. However, neither the above-named
supplier, nor any of its subsidiaries, assumes any liability whatsoever for the accuracy or completeness of the
information contained herein.
Final determination of suitability of any material is the sole responsibility of the user. All materials may present
unknown hazards and should be used with caution. Although certain hazards are described herein, we cannot
guarantee that these are the only hazards that exist.
1
4
1
National Fire Protection
Association (U.S.A.)
Health
Special
Instability
Flammability
:
Hazardous Material
Information System (U.S.A.)
1
4
1
Health
*
Flammability
Physical hazards
:
Build 1.1
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[Yuri B.]

Can you get the 500g mapp tanks like this?

http://www.londontools.co.uk/Rothenb...-Gas-453g.html

Dave has a set that uses mapp with normal refillable oxygen bottles like a big oxy acc set up, i could try and get some pics or a vid if you are interested.

Jon

If that rothenberger mapp has 7/16 inch connection, then, yes, they are obtainable to us. What is Dave? (such variant would be very nice for me - ideally with some 2l refillable oxygen bottle)

[monkey spanners]

If that rothenberger mapp has 7/16 inch connection, then, yes, they are obtainable to us. What is Dave? (such variant would be very nice for me - ideally with some 2l refillable oxygen bottle)

Dave is my business partner

The set is sold by a local wholesaler but i can't find a picture or link to it.

Will take some pics next time i'm working with Dave!


IM, thats the old methylaccypropy mapp gas, new MappPro is in fact propylene,

http://www.nationalref.com/PDF%27s/M...PP_pro_Gas.pdf

Jon

[Yuri B.]

Monkey spanners, if you get the link, please, post it here (although I doubt they would send the kit to the other end of EU).

Install, what has always been striking to me : why many profi welders are smokers? I hope once a week or even a month using the mapp could not turn to be harmfull.