transparent material

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

Dear Srs.

We're making a small vertical pressure filter to realize some tests in the our customer, its material is 316L.
We would like to build the body with a transparent material to our customer sees the filtration and the leaves covered with the filtraded product, but we didn't find it in ASME Material.

Is there this mateiral or antoher kind of transparent material ?

Thanks
Mgalter

akonrad · **Posted:** Wed May 20, 2009 11:06 am

Are you sure you really need to U-stamp it if it's just for testing?

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

It’s not a sure exactly, but a tentative to find this material or looks like it, it was built with AS 240 S31603 and we're researching this kind of material.

Do you know it or seemed ?

akonrad · **Posted:** Wed May 20, 2009 3:06 pm

The thing is SecVIII-1 allows the use only of listed materials, and they are all metals. However, gaskets or sightglasses are not in the list, and they are used commonly. But I'm sure you can't justify a glass or plastic design of a U-stamped shell of a pressure vessel without a request for a code revision or a code case. Good luck.

Quote:

Do you know it or seemed ?

What do you mean?

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

Perhaps I didn't express me well, I asked if you know this material sightglasses to build the body of filter.

But, thank for your answer.

akonrad · **Posted:** Thu May 21, 2009 10:42 am

I understand that you are asking for some recommednation for a transparent material. Well, give more details then: pressure, temperature, diameter, medium.
Konrad

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

Following below the details:

- Operation Pressure: 6 bar
- Design pressure: 7,5 bar
- Operation temperature: 90ºC
- Design Temperature: 120ºC
- Diameter body: 300mm
- Thickness body: 3,5mm
- Torispherical head: NAR 10
- Thickness corrosion: 1,5mm

Mgalter

akonrad · **Posted:** Thu May 21, 2009 2:58 pm

Well, you can get this sort of enclosures made of clear plastic for domestic tap water, but not that big.
http://www.filters-china.com/pro/water_ ... /ry_f7.jpg
Try mcmaster.com to find a clear acrylic or pvc pipe (it's damn big size!), but a dished head... forget it.

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

Thanks Konrad,

Any newness I'll contact.

No transparent material permitted in Sect. VIII (Only metallic)
mauro

akonrad · **Posted:** Sun May 24, 2009 10:46 pm

Mauro, you're like a god speaking through profets mouth :-)

Anyway, can you please tell us how do you approach a design with sightglasses?

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

Thanks Mauro for your information.

Mgalter

Gonzaga · **Joined:** Sat Dec 15, 2001 1:00 am **Posts:** 657

akonrad wrote:

Mauro, you're like a god speaking through profets mouth :-)

Anyway, can you please tell us how do you approach a design with sightglasses?

Sight glasses are not within the scope of Sect.VIII. Vessel's Code boundary is before it.
Mauro

mgalter · **Joined:** Wed May 13, 2009 12:30 pm **Posts:** 8

We gave up this idea, and we will build it in stainless steel 316 L

Thanks
Mgalter

akonrad · **Posted:** Thu May 28, 2009 6:46 pm

Mauro, do you mean that a U-stamped vessel cannot have sight glasses?

Gonzaga · **Joined:** Sat Dec 15, 2001 1:00 am **Posts:** 657

akonrad wrote:

Mauro, do you mean that a U-stamped vessel cannot have sight glasses?

Can have, sure, but sight glasses are outside the scope of Sect.VIII.
Mauro

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