Trunnion Ball Valves are shut-off valves that control the flow of a liquid or gas by means of a rotary ball having a bore. By rotating the ball a quarter turn (90 degrees) around its axis, the medium can flow through or is blocked. They are characterized by a long service life and provide reliable sealing over the life span, even when the valve is not in use for a long time. As a result, they are more popular as a shut-off valve. Product Features Split body, Full bore Flanged connections Blowout-proof stem Non-removable antistatic devices Cavity pressure balancing hole Live Loaded Packing Standards API 6D PED Quality Standard MSS SP 55 All wetted component materials meet NACE MR0175 / ISO15156 & NACE MR0103 / ISO17945 Fire-Safe API 607, ISO 10497, API 6FA Fugitive Emissions : ISO 15848 / TA-LUFT ATEX Sectors Oil and gas Chemical and Petrochemical Paper industry Energy Food and Pharmaceutical Naval Sector Storage tanks and terminals Mining Waste management Fluid transport

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DN-300 (12 ) to DN-400 (16
Class-150 & 300
DN-150 (6 ) to DN-300
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TRUNNION
BALL VALVES

2. JC Fábrica de Válvulas S.A.U, established in 1968,
is a multinational company specialised in the
manufacture and sale of high quality industrial valves.
The expertise and know how acquired over the years
coupled with the continued investments in the design
of valves, has made JC a world renowned company in
the field of valve applications.
“We make valves
since 1968”
JC Valves are designed and produced to meet the
major international standards and we take great
care and put a lot of emphasis on QUALITY, which
provides our customers with a total guarantee and
trouble free operation of their process.
And in addition, we take great care to make our
facilities and our products Environment friendly.
Quality assurance
TTV-JC provides world wide coverage thanks to
the strategic locations of its factories and offices in
Canada, Mexico, Brasil, Russia, Middle East, South
Africa, India, Singapore, China and Spain.
TTV-JC World Wide
JC Fábrica de Válvulas S.A.U offers its customers a
world wide service, from technical advice to choose the
right valve up to the design and manufacture of custom
built valves to meet special service requirements.
Our R+D department is always ready to find solutions for
severe applications and our global distribution network
offers quick availability of JC valves and an efficient after
sales service.
Global services
JC develops and designs valves for all applications, but the
main focus is in Oil & Gas, Chemical, Petrochemical, Pulp &
Paper and Energy sectors.
Market sectors
Oil Chemical
Gas
Petrochemical
Pulp & Paper
Energy
Global Service
Technical Support
Manufacture
World Wide Distribution
Design
After-Sales Service

3. FORGED 6015 | Full Bore
Class 150. From 2” to 42”
FORGED 6030 | Full Bore
Class 300. From 2” to 42”
FORGED 6060 | Full Bore
Class 600. From 2” to 36”
FORGED 6090 | Full Bore
Class 900. From 2” to 24”
FORGED 6050 | Full Bore
Class 1500. From 2” to 24”
FORGED 6042 | Full Bore
Class 2500. From 2” to 12”
FORGED 7015 | Reduced Bore
Class 150. From 3” to 42”
FORGED 7030 | Reduced Bore
Class 300. From 2” to 42”
FORGED 7060 | Reduced Bore
Class 600. From 3” to 36”
FORGED 7090 | Reduced Bore
Class 900. From 3” to 24”
FORGED 7050 | Reduced Bore
Class 1500. From 3” to 24”
FORGED 7042 | Reduced Bore
Class 2500. From 3” to 12”
FIG. 6015 | Full Bore
Class 150. From 2” to 24”
FIG. 6030 | Full Bore
Class 300. From 2” to 24”
FIG. 6060 | Full Bore
Class 600. From 2” to 24”
FIG. 6090 | Full Bore
Class 900. From 2” to 20”
FIG. 6050 | Full Bore
Class 1500. From 2” to 20”
FIG. 7015 | Reduced Bore
Class 150. From 2” to 24”
FIG. 7030 | Reduced Bore
Class 300. From 2” to 24”
FIG. 7060 | Reduced Bore
Class 600. From 2” to 24”
FIG. 7090 | Reduced Bore
Class 900. From 2” to 20”
FIG. 7050 | Reduced Bore
Class 1500. From 2” to 20”
CAST 2515 | Full Bore
Class 150. From 2” to 16”
CAST 2530 | Full Bore
Class 300. From 2” to 16”
CAST 2560 | Full Bore
Class 600. From 2” to 12”
3 Piece Forged Trunnion Mounted
Metal Seated 3- Piece Forged Trunnion Mounted
2 Piece Cast Trunnion Mounted
TRUNNION BALL VALVES
PRODUCT RANGE

4. Trunnion mounted ball valves are based on a system that provide a fixed ball
and floating seat rings. The side load given by the pressure acting on the ball is
absorbed by the bearings. At low pressure the sealing on the seats is obtained
by the spring action on the seat rings. The more the pressure increases, the
more it pushes the seats against the ball.
The JC trunnion mounted ball valves range is specially designed to stand the
harsh service conditions often presented in the hydrocarbon industry and in
the gas storage and transportation field.
Blow-out proof stem
Self lubricating bushings in
AISI 316 internally coated
with PTFE.
Inconel 750 springs
Floating seats
(spring loaded)
Supported Ball
(*) Seats are also available in DPE (Double Piston Effect) and PMSS (Primary Metal, Secondary Soft).
Description and working principle
TRUNNION BALL VALVES
TECHNICAL FEATURES

5. Single Piston Effect (SPE)
Primary Metal Seat / Secondary Soft (PMSS)
Double Piston Effect (DPE)
Emergency Sealing Injection
TRUNNION BALL VALVES
TECHNICAL FEATURES
In a trunnion ball valve media will be trapped in the body
cavity either in open or close position. As temperature
rises, the trapped media will expand and the pressure
increases. The SPE seat design allows automatic relief
of excessive pressure built up inside the body cavity
into the pipe. This is the standard JC construction.
Standard seat design is primary soft seal and secondary
metal to metal seal but we can also offer on request the
design with primary metal to metal seal and secondary
soft seal seat design.
On the other hand the DPE seats do not relieve the
internal volume (cavity) pressure build-up caused by
thermal expansion. The force generated by the fluid
contained in the cavity will be balanced and will not
affect the seat contact with the ball. When the valve is
equipped with 2 identical DPE seats, the cavity relief
must be realized by a specific external system (external
safety or bleed valve).
Emergency seat or stem sealant injection can be
used to stop or strongly reduce a leakage with the
valve in service. This will allow to schedule a proper
maintenance reducing the risk of an accident due to
valve failure.
Optional

6. TRUNNION BALL VALVES
TECHNICAL FEATURES
TRUNNION BALL VALVES
TECHNICAL FEATURES
Weld Overlay
JC Valves provides the best welding technology for
any kind of welding needs. Weld Overlay is a welding
process, offered on request, where one or more metals
with specific characteristics are applied to a base
metal to improve desirable properties or to restore the
original dimension of the components that significantly
enhances the service life of them.
This technology is cost effective for ball valves in highly
corrosive or erosive services.

7. TRUNNION BALL VALVES
SPECIAL CONFIGURATION
Metal Seated
JC offers also a large range of metal seated ball valves
mainly used for heavy duty application such as:
»
» High temperatures: above 260 ºC the use of soft
seats is not recommended.
»
» Abrasive media: even small particles can damage
soft seats.
»
» High Velocity in opening/closing cycles:
this action can perfectly deform the soft ring and
destroy the seat.
Top Entry
When maintenance in line is required, top-entry ball
valves are available. With the stem in the vertical position
this valve design permits disassembly, replacement of
the all internal parts and seals and reassembly without
removing the valve from the line.
This type of valves are specially recommended for
those which have to be welded to the pipes and for
compact installations like off-shore platforms.

8. Ø
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ISO 5211
ISO 521
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TRUNNION
BALL
VALVES
JC FÁBRICA DE VÁLVULAS S.A.U.
Av. Segle XXI, 75 - Pol. Ind. Can Calderon
08830 Sant Boi del Llobregat
Barcelona (Spain)
Tel. +34 93 654 86 86
Fax +34 93 654 86 87
sales@jc-valves.com
www.jc-valves.com
Edition 06/2019