BOSCAROL-ITALY
Boscarol
Since our first operating years, our goal has been to select the best technologies developed by scientific progress in order to provide high quality solutions, guaranteed by rigorous professionalism and increasingly specialised skills.
Story
Leopoldo Boscarol founded the company bearing his name in 1954 in Milan, immediately making a name for himself in the sector thanks to the quality of his first products: high gauge valves.
In the early 70s Boscarol inaugurated a new production line, which was very well received by the market: cryogenic valves to support cold plants.
Now in its third generation of management, Boscarol is constantly growing and has carved out a leading position in the industry for the production of increasingly sophisticated tools, e.g. reducers and economisers.
SPECIALISATION
Innovation, flexibility, improvement
From reducers to economisers, from cryogenic valves to gauge valves: every single Boscarol product is characterised by a very high level of executive precision. Thanks to our great productive and organisational flexibility, we can accommodate the most various requests of the cryogenic, oil & gas, naval and chemical sectors, both for big and small lots, whilst fully respecting the agreed deadlines.
QUALITY
A corporate quality culture
A fleet of avant-garde machines, the best technology in the sector and an expanding production area are a guarantee of the extremely high levels of quality and precision of Boscarol products. Our quality parameters were adopted in 2000 and are today an integral part of the company identity: a guarantee of total control of supplies, organic production planning and cost containment.
PRODUCTS
Boscarol technology for pressure control
Functional and easy to maintain, our cryogenic valves guarantee precise pressure control and meet the needs of loading and unloading fluids at very low temperatures while respecting safety margins. Developed for sensitive application needs, they are totally free of any grease traces.
Technical features
-
Fluid loading and withdrawal up to -196°C
-
Available in diameters from DN 6 to DN 150
-
Available up to nominal pressure PN 40
-
Developed for use in oxygen, nitrogen, argon, carbon dioxide, helium, air distribution and storage systems
-
Available in line or angle
-
Stainless steel

Valves
All the quality of Boscarol technological solutions available in a wide range catered to your needs.

Economisers and reducers
Boscarol has developed two product lines to manage pressure differences and surpluses, creating solutions that allow on the one hand to make the plant more functional and efficient, and on the other hand to ensure greater safety and financial savings.
Sensitivity, precision, consistency
Boscarol economisers are a guarantee of safety and financial saving. They stop the risk of surplus elimination in case of overpressure and leakages in case of temperature increase, which are typical for plants without economisers.
-
Restoration of normal pressure values
-
Surplus recovery at its natural location
-
Losses go back into the use cycle
-
Plant safety and economy
Boscarol reducers convey fluids directly into the service, regulating the different inlet and outlet pressures. The working section of the diaphragm is fourteen times larger than that of the shutter: such a ratio allows to obtain a very sensitive, precise and constant overflow opening and to respect the pressure value established downstream.
Technical features
-
Bell-shaped body
-
Threaded / welded line or square couplings
-
Passage diameters of 6,5 - 15 and 25 mm
-
Tangs and fittings for welded funnel couplings

Economisers and reducers
- Nominal diameter (ND)6,51525
- Nominal pressure (NP)40 bar / 580 psi
- Operating temperatures-196°C/-321°F ÷ +50°C/+122°F
- CouplingsThreaded 5/8” BSP male1” BSP male1”1⁄4 BSP male
- Pocket weldedØ 12,1 mmØ 17,2
- Ø 23,2 mmØ 27,6 mm
- Maximum adjustment range1-25 bar1-35 bar1-20 bar
- Flow coefficient cv 1)0,581,84,8
- Reference standardsASME/ANSI B16.34 - EN 12300, 738-2 - ISO 5208
- CertificationDirective 94/9/UE (ATEX)
- MaterialsAdjusting screwStainless steel 303
- HousingBrass CW617NBrass CW617N or stainless steel 316Bronze or stainless steel 316
- Adjustment
- springCrSi steel - 52SiCrNi5-coated
- MembraneBronze EN1652 CW452K or stainless steel 316
- SealPTFE
- Flange--Brass CW617N or stainless stee
- ShutterPTFE
- BodyBrass CW617NBrass CW617N or stainless steel 316Brass CW617N or stainless steel 316
- Lower body cap-Stainless steel 304/316Stainless steel 304/316
- 1) USA gallons per minute of water at 60°F with a pressure difference of 1 psi

Cryogenic by-passes
They are small and housed in the tank tool block. Particularly suitable for applications on differential pressure measurements, they allow for the control of the fluid contained in the system.
- Available with 3 and 4 valves
- Possibility of a 40 diameter flange for connection to the control pressure gauge
- Line or square couplings
- Centre to centre distance of 35 mm (3, 4 valves) or 35 mm (inlet), 54 mm (outlet) if with 4 valves
- Conical needle shutter free to rotate with respect to the stem for greater resistance to wear due to rubbing during closing.
Nominal pressure (NP) |
40 bar / 580 psi |
---|---|
Operating temperature | -196°C/-321°F ÷ +50°C/+122°F |
Couplings | Male/female threaded: 1/4 NPT, 1/4 BSP, UNF 1) |
Certification | Direttiva 94/9/UE (ATEX) |
Materials |
Body: Stainless steel. A479-grade 304 Stem: Stainless steel. A479-grade 316 Pin shutter: Stainless steel A479-grade 316 with stellite insert Seal: PTFE Handwheel: bleached brass |
1) Other types of threading on request

Three-piece joints
Support accessories for cryogenic applications they allow connecting various pipes to each other. They are composed of two spherical seal spigots and are interconnected by a threaded union. Effective seal is obtained from the convex-conical connection.
Passage mm (inch) | 8 (1/4”) - 15 (1/2”) - 20 (3/4”) - 25 (1”) |
---|---|
Nominal pressure (NP) | 40 bar / 580 psi |
Operating temperature | -196°C/-321°F ÷ +50°C/+122°F |
Reference standards | ASME/ANSI: B16.34, B16.11, B16.25 |
Certification | Directive 97/23/CE (PED) |
Materials | Stainless stee |

Gauge valves
Developed for high pressures and sudden temperature changes, Boscarol gauge valves are ideal for regulating or interrupting the flow of supply or exhaust fluids, thus supporting pressure gauges. They are manufactured with high quality materials which are selected, treated and processed according to each specific condition of use.
Technical features
-
Available in three tuned up solutions: OT/58, AISI/316, ASTM A 105
-
Operating parts in zinc-coated ASTM A 105 steel can be provided for the AISI/316 series
-
Double version with 2 or 3 ways
-
3-way version with diameter 40 flange for the connection of the control pressure gauge

2-way manifold
Double gauge valve to reduce operating costs on measuring systems and spare double valves with different nipples and fittings.
Passage mm (inch) | Ø 3 mm | |
---|---|---|
Operating limit | PTFE | 200 bar - 100°C |
GRAPHITE | 120 bar - 350°C | |
Couplings |
Threaded female inlet/outlet: 1/2 NPT Female threaded bleeding hole: 1/4 |
|
Certification | Directive 94/9/UE (ATEX) | |
Materials | Body and stem | Stainless steel 316 |
Pin shutter | Stainless steel 316 - with stellite insert | |
Seal | PTFE or GRAPHITE | |
Handwheel | Stainless steel 304 |

3-way manifold
In systems including a shunt route in a distribution circuit, it momentarily allows not to reduce the potential of the system, thus excluding performance drops.
Passage mm (inch) | Ø 3 mm | |
---|---|---|
Operating limit | PTFE | 200 bar - 100°C |
GRAPHITE | 120 bar - 400°C | |
Couplings | Threaded male/female (NPT, BSP) 1) | |
Certification | Directive 94/9/UE (ATEX) | |
Materials | Body and stem | Stainless steel 316 |
Pin shutter | Stainless steel 316 - with stellite insert | |
Seal | PTFE or GRAPHITE | |
Handwheel | Stainless steel 304 |

Valves
All the quality of Boscarol technological solutions available in a wide range catered to every single need.
Series |
Brass 2/3 way | Carbon steel 2/3 vie | Stainless steel 2/3 vie | |
---|---|---|---|---|
Passage |
Ø 3 mm 1) | |||
Operating limit |
PTFE |
125 bar - 100°C |
250 bar - 100°C |
400 bar - 100°C |
GRAFITE |
125 bar - 200°C |
120 bar - 300°C |
120 bar - 400°C |
|
Couplings |
Threaded male/female (NPT, BSP, BSPT, API)2) | |||
Reference standards D |
DIN 16270 - 16271 |
|||
Certification |
Directive 94/9/UE (ATEX) |
|||
Materials |
Body |
Brass CW617N 3) |
Carbon steel A105 4) |
Stainless steel AISI 316 |
Stem |
Stainless steel 410 |
Stainless steel 410 |
Stainless steel AISI 316 |
|
Pin shutter |
Hardened stainless steel 420 |
Hardened stainless steel 420 |
Stainless steel 316 with stellite insert |
|
Seal |
PTFE or GRAPHITE |
1) Anche Ø 4,5 mm
2) Altri tipi di filettatura a richiesta
3) Sbiancato a richiesta
4) Zincato o brunito





