Functional and easy maintenance, these assure precise control of pressure and meet the requirements in input and drawing of fluids at very low temperatures while always maintaining the necessary safety margins.
In a choice of various aperture diameters, they are essential for fluid distribution and storage systems, and for oxygen, nitrogen and argon tanks.
Targeted at operating in delicate areas of work, each single component of the Boscarol cryogenic valve is supplied completely grease free.

THREADED COUPLING CRYOGENIC VALVES

Produced in AISI 304, apart from the screw type in bronze and the handwheel in brass, with male thread couplings.

The disk, coated in ground stellite in the conical seal part, has a very high resistance to corrosion and plasma, due to its particular hardness and the seat machined into the housing. Moreover, being jointed, it is self-centering on the seat without rotating. The seal between the housing and the cap is guaranteed by the gasket in soft copper and, on the rotating stem, by gaskets in P.T.F.E. which can be adjusted through the packing gland. The lower gasket stops any loss of fluid from spreading rapidly within the sleeve which would otherwise cause overheating. This is an indispensable factor for the seal and life of the upper gasket.

CRYOGENIC VALVES FOR WELDED COUPLING

The option of this series meets the system constructor's needs. They are smaller and differ from their parent versions by having a flat-plane disk in P.T.F.E. which is also jointed and self-centering to stop sliding on the seat. Having no machined threads, this series is particularly competitive.

CHECK VALVES

Also called non-return or single-acting valves, these stop the return of fluid under pressure.

 

Threaded couplings cryogenic valves

TYPES: LINE (L) SQUARE (SQ) REDUCED (R)
housing
disk
gasket
handwheel
AISI/304
AISI/304 stellitato
P.T.F.E.
stampato OT/58
APERTURES mm. COUPLINGS
4
6
15
20
30
40
1/4"
1/2"
3/4"
1"
1" 1/4
1" 3/4 (only type L)
Operational limits 40 ATE-196°C

 

Cryogenic valves for welded couplings

TYPE: COLD LINE, HOT LINE, SQUARE
housing
disk
gasket
handwheel
AISI/304
P.T.F.E.
P.T.F.E.
drop-forget OT/58
APERTURES mm. COUPLINGS
6
10
15
20
25
32
40
50
55
1/2" gas male
BW-SW Ø 14.3
BW-SW Ø 17.6
BW-SW Ø 21.6
BW-SW Ø 27.3
BW-SW Ø 34.4
BW-SW Ø 42.9
BW-SW Ø 57.4 (only type L.)
BW-SW Ø 61 (only type L.)
Operational limits 40 ATE-196°C


 

Check threaded valves

TYPES: LINE (L) SQUARE (SQ)
housing
tdisk
tappo
sede tenuta
A479/304
OT/58
OT/58
P.T.F.E.
APERTURES mm. COUPLINGS
10
15
20
30
32
40
50
BW-SW Ø 14.3
BW-SW Ø 17.6
BW-SW Ø 21.6
BW-SW Ø 27.3
BW-SW Ø 34.4
BW-SW Ø 42.9
BW-SW Ø 57.4 (only type L)
operational limits 40 ATE-196°C