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Crocetta del Montello 11 Ottobre, 2013

Technical sheet: the valve ATZ0038-0

Valve's goal and functioning:






The Valve anti-explosion acts in cas of disfunctioning in the lighting of the stove. Sometimes the gases, which saturate the combustion chamber, could

reveal themselves dangerous, with consequences like explosions and glass' breakings.
#
To obviate this, a discharge-valve has been designed, in order to reduce the pressure that is caused at the time of combustion. #"
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Assembly's system: #

To assembly the valve a hole is made. The hole's diameter is 85-86 m/m and it can be made in evey part of the combustio-chamber, exept for the bottom;
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then the valve body is put in the external part of the combustion-chamber and then the locking ring is screwed. (#"
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Materials of construction: (#

The materials implied in the manufacture of the valve are all fitted with certification. (for what concerns the numeration, make reference to the picture) (
#
1) Vent tube material: mild steels for the cold deformation, set of rules EN 10027 ( DC04 N° 1.0338 ) #"
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2) Sliding flange material: mild steels for the cold deformation, set of rules EN 10027 ( DC04 N° 1.0338 ) #

3) Support disk-spring material: automatic steels at high machinability, set of rules EN 10277 ( 11SMn30 n° 1.0715 )
%( %#& %" %#& &( &#& &" &#& "( "#& "" "#& $( $#& $" $#&
4) Spring material: harmonic thread, inconel x750 EN 10204 - 2004 -3.1




5) Locking ring material: aluminum alloy 6082, set of rules UNI EN 755-1 UNI EN 755-2 UNI EN 573-3

6) Pivot material: automatic steels at high machinability, set of rules EN 10277 ( 11SMn30 n° 1.0715 )

7) Stopper anti soot material: mild steels for the cold deformation, set of rules EN 10027 ( DC04 N° 1.0338 )

8) Tight-seal material: Guarmica P Mica flogopite, set of rules HTB (DIN 3374) EN ISO 11114-3 EN 1797-1

9) Fixed flange material: mild steels for the cold deformation, set of rules EN 10027 ( DC04 N° 1.0338 )

Valve's datums:

Size: utmost diameter = 99; height = 63.7

Valve's weight, kg = 0.44

Drain hole's diameter = 75-76 m/m

HIghest temperature of work; in degrees celsius = 350 G°

Minimum pressure, exercised for the opening kg = 0.48

Highest pressure, exercised for the total opening kg = 2.35

Simulated datums in case of explosion:

Theoretical pressure in the combustion-chamber, atmospheres ( in case of explosion ) = 3

Degrees celsius combustion-chamber =80

Atmospheres' increase/ degrees = 0.09

Expulsion's capacities of the valve ( in liters )= 1.99 Liters / second

Tight seal's datums:

Highest temperature; in degrees celsius = 1000

Highest continued temperature; in degrees celsius = 850/900

Peak pressure, in bar = 10



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&'#' #$(
Maintenance's datums: )* &+ "# #%" )* + &'#$ #$

In case of a periodic cleaning, before enlightening the stove, it's necessary to check carefully that between the valve and the tight seal there aren't any &$ (
%& #&
pieces of pellet or something else. )* * "#( #% )* *

On the other hand, in case of explosion: )* &$ ( )*

1) check the integrity of the tight seal )* * %& #& )* *

2) check the integrity of the spring

2) check that between the valve and the tight seal there aren't any pieces of pellet or something else.

Valve's life:

1000 explosions
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