6"
Solenoid Valve Represents the Latest Advancement of Valcor’s
Technology for the Nuclear Power Plant (NPP) Market.
Four
(4) valves are destined for use in South Korea’s latest
NPP construction project, Yonggwang Units 5&6. The design,
to ASME III Code requirements, "N"-Stamped, is one of the
largest to be developed by Valcor. The prototype unit is being
subjected to an extensive set of design qualification tests
to ensure that it can perform its intended safety function
even after being in service for 40 years.
Amongst
other tests, the unit is exposed to thermal and radiation aging,
vigorous shaker table testing to confirm that it will operate
during an earthquake, and flow interruption tests at 1050 GPM.In
addition to its size, the process used to conceive and fabricate
the design was a new and innovative approach for Valcor Nuclear.
Because of our limited ability to physically handle equipment
of this size, Valcor has partnered with another ASME fabricator
of large control valves, FlowServe (Williamsport, PA), to jointly
design and build the unit.Valcor assumed the primary and overall
design responsibility to ensure the electrical operator and
valve internals meet with the Customer’s performance requirements,
with FlowServe being assigned the responsibility to design and
build the pressure boundary parts (body, bonnet, disc) in accordance
with the ASME Code.FlowServe will also be carrying out all the
factory tests on the assembled units and participate
extensively in the IEEE qualification. The valves will ultimately
bear the name of both companies.
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Valcor
to Manufacture and Sell the Hoke´ Line of Nuclear
Valves
Valcor Engineering Corporation´ and Hoke, Inc., have
agreed that Valcor will assume responsibility for the provision
of ASME III and Safety Related Hoke Valves to the worldwide
nuclear industry. Valcor will manufacture and provide
a series of Hoke Valves which have been specially designed for
use in nuclear service, and will also provide nuclear versions
of certain of Hoke's commercial product lines. Hoke has
an extremely large installed base and is well known for their
instrumentation, needle, globe and bellows valves, as well as
for manifolds, sampling bottles, and Gyrolok´ fittings.
Hoke's
N2811, N4214 and N9303 series are the most predominant "N"
stamped valves in use in the nuclear industry, but Valcor
is able to supply any Hoke
valve previously "N" stamped or used in nuclear service.
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Valcor
and Fox Valve Cooperate for Design and Manufacture of Cavitating
Venturis
Valcor Nuclear and Fox Valve Development Corporation have
concluded an agreement which allows Valcor to provide Cavitating
Venturis of Fox design to the nuclear power industry.
These venturis are designed and manufactured in accordance
with the ASME Boiler and Pressure Vessel Code, Section III,
and can be "N" stamped by Valcor in accordance with its ASME
Certification.
Fox Valve
Development Corporation was founded in 1961 based upon venturi
technology, and has grown into a major supplier of venturi
devices to various markets, including power, industrial, and
aircraft and aerospace. Fox has developed cavitating
venturi designs since its inception and is generally recognized
for its expertise in that field. Fox is located in Dover,
New Jersey.
Valcor
will act as the primary supplier, and will take responsibility
for the detailed engineering, manufacture, and test of the
devices. Valcor will provide the performance guarantees
and hardware warranty. The supply will be undertaken
in cooperation with Fox, who will provide to Valcor the conceptual
design of the venturis as well as such technical assistance
as may be required during the course of the contract.
Cavitating
Venturis are passive flow control devices (no moving parts)
which, when installed in a piping system, limit the flow of
fluid to pre-determined levels. The convergent-divergent
shape of the venturi has a reduced throat area which induces
flashing and re-condensation of the fluid (referred to as
cavitation) in such a manner as to limit the flow rate.
They can be used to assure an equal distribution of fluid
in a multiple-branch system, and are commonly used in the
emergency feed systems of nuclear power plants for this
purpose.
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Valcor
Successfully Tests New SSPV Valve
Valcor has developed and functionally tested a totally new
air pilot valve intended for use as a Scram Solenoid Pilot
Valve on GE Boiling Water Reactors. SSPV's in service
have been a constant performance headache for utilities for
several years, and a number of operating plants have been
moving towards replacement with a different type of valves.
The Valcor
design meets the narrow specifications which apply to this
critical service valve, which is used to signal the insertion
of the reactor control rods during a reactor scram.
It is an AC-powered, pilot operated 3-way air pilot valve,
which does not use diaphragms (diaphragms have been the cause
of slow response times for existing valves). The valve
is available in two models, V70900-116, a two-solenoid "T-Type"
arrangement, and V70900-116-1, a single solenoid "dual" arrangement.
For this valve, Valcor departed from its normal DC solenoid
technology and designed a brand new AC solenoid. The
AC supply, combined with the exceptionally fast response
time required of the valve, precluded the use of a rectified
DC coil for this particular application.
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Valcor
Joins with BW/IP Anchor Darling to Extend Product Line Size
Valcor and BW/IP Anchor Darling have joined together to manufacture
larger bodied solenoid operated valves. the team has
been successful in winning a recent order form Hanjung, and
expects to bid on several other projects over the balance
of the year.
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Valcor
is Now Your Source for Circle Seal Nuclear Valves
Valcor, under license from Circle Seal Controls, Inc., Corona,
CA is now supplying "N" stamped and Safety Related Circle
Seal check, excess flow, and solenoid valves to the nuclear
industry. We also support spare parts for these models.
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