[TheForge] Sandblasting nozzles

Tue Dec 10 12:58:04 2002

Sand going throught the ball valve? Doesn't a commercial unit use a valve that turns the air on to the pot? No sand through the valve, takes a little longer to get started but...
 [email protected] wrote:Harbor Freight sells the nozzles in a ten pack for $12. There are 
also carbide nozzles made. I don't know of a source, but your local 
abrasives company should carry them. Personnaly, I would stick with the 
ceramic and buy a supply unless your in a production situation. At 
about four cents a minute, I wouldn't consider the situation that bad, 
considering that a five hp compressor will burn about half a cent per 
minute in electricity alone ( assuming 8.5 cents per kWh). I always 
buy multiple packs and order new ones when my supply get low. I hate 
running out. 

Also, the ball valves used for a pressure blaster are not ordinary 
plumbing brass ones, with a chromed brass ball, but should be high 
carbon steel. A friend gave me a box of ten of these high carbon steel 
valves. He bought them at an auction and was dissapointed when they 
weren't brass. I explained what they were, but he still didn't want them.

It seems that a deadman valve will last longer. Harbor freight also 
have a deadman valve for $49. As soon as I run out of ball valves I am 
going to get one. 

Shannell Sugrue wrote:

>Yeah I found that with the ball valve too, now its off or on. My tips
>probably do last longer than 20mins mabey more like 40, then the hole is
>twice the diameter it started with and air flow goes up dramatically and the
>compressors have trouble keeping up.
>
>----- Original Message -----
>From: "marc" 
>To: 
>Sent: 09 December, 2002 6:20 PM
>Subject: Re: [TheForge] Sandblasting nozzles
>
>
> 
>
>>Is he talking about the ceramic tip or the ball valve?
>>I went through my first ball valve in 20 minutes. It seems if you try to
>>adjust the flow with the final ball valve it will eat the ball inside very
>>quickly. I learned all the way on or all the way off. Adjust the air flow
>>not the final valve where the sand comes out.
>>----- Original Message -----
>>From: "Walter L. Mullett" 
>>To: 
>>Sent: Monday, December 09, 2002 8:47 PM
>>Subject: Re: [TheForge] Sandblasting nozzles
>>
>>
>> 
>>
>>>Shannell,
>>>
>>>I used to do a lot of work with a monument shop that engraved granite
>>> 
>>>
>with
> 
>
>>a
>> 
>>
>>>sandblast unit. Their ceramic tips would last for months with almost
>>> 
>>>
>all
> 
>
>>>day, every workday use. Something must be wrong with your setup.
>>>
>>>Walt
>>>-----Original Message-----
>>>From: Shannell Sugrue 
>>>To: [email protected] 
>>>Date: Monday, December 09, 2002 8:31 PM
>>>Subject: [TheForge] Sandblasting nozzles
>>>
>>>
>>> 
>>>
>>>>Enquired today about some replacement ceramic nozzles for my chinese
>>>>pressure pot sandblaster, they are $10 ea and last about 20-30 mins,
>>>> 
>>>>
>rip
> 
>
>>>>off if you ask me, Ive heard of using tungsten nozzles, are these more
>>>>economical, can tungsten be machined on a lathe so I could make my
>>>> 
>>>>
>own??
> 
>
>>or
>> 
>>
>>>>can I use some other type of metal and lathe/drill them up?
>>>>
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>>
>
>_______________________________________________
>http://mailman.qth.net/mailman/listinfo/theforge
>theforge mail list group photo site is
>http://www.photoaccess.com
>Login: [email protected]
>password: anvil
>___________
>
>
>
> 
>

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