Post on 26-Oct-2021
The reference for more than 15 years
Low and easy maintenance valvesRAMA®
" RAMA Globe valves" RAMA Instrumentation valves" RAMA Bellows seal globe valves" CLAMA Check valves" EQUIBAR Pressure balancing device
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Fast & easy maintenance in-line maintenance
in less than 15 minutes
RAMA Globe valve
CLAMA Check valve
Trim and packing disassemblywithout tools
Seat removal with theextraction tool
Seat and disc removal
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The only range with so many design features
Advance design, Quality and reliabilityExclusive and complete range "
The nuclear power valve reference "Certified range "
Design features" One-piece forged body for more safety and reliability" Removable seat" Removable guided disc" Advanced cage profile allows high flow coefficient Cv" Enhanced stem seal with load checking system
Operation and maintenance" High and permanent level of internal tightness
with any fluids" Cobalt free for nuclear service" In-line maintenance in less than 15 minutes" Trim and packing removal without tools" Removable seat" Disc and stem easily dismountable" No welds to cut and reweld, no lapping
AdvantagesFast and easy maintenance "
Low operating costs thanks to low maintenance "Low fugitive emissions "
Low radioactive exposition due to fast maintenance "Standardized components "
Positive feedback" Manufacturing and maintenance mastering since more than 15 years "
" Fits with all customer's needs "
Removable seatUnaffected by solicitations of the body "
Body-seat graphite gasket fitted with an extrusion prevention device "
Gasket load controlled by a metal-to-metalcompression stop "
Available with different qualified hard-facing alloys "
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RAMA-CLAMA A complete and qualified valve range
RAMAIts simple and standard conception allows fast and easy maintenancefor a simple management of your valve population. Available options:
- Limit switches- Electric, pneumatic or hydraulic actuator- Flow control valve- Bellows sealing- Butt Weld ends or Socket weld ends available
The RAMA valve is able to answer to replacement problems that couldoccur during replacement of existing valves.
RAMA "light"Reduced passage valve adapted to functions like draining or venting.Exists in 2 versions:
- Ø 6 Instrumentation valves without hard facing for lines without flow.- Ø 8 Line valves with hard facing for flow passage.
Qualified by EDF, the RAMA "light" valve can be customized on request.
Bellows seal RAMAIts special features :
- Removable seat- Removable bellows-cover sub assembly- Bellows leakage indicator- Straight body or Y pattern
Qualified by the DCN (The French Navy Authority), this valve is recom-mended in severe conditions of use.
CLAMA Check valvesThe easy maintenance check valve:
- Seat and disc easily removable- Simple and tested design- Standard components
Qualified by EDF, the CLAMA check valve was developped to suitperfectly with principal primary circuit requirements.
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RAMA Manual globe valve - Classes 150 - 1500NPS Dimensions Flow
mm inch A B V Mass coefficientmm mm mm kg Cv
8 1/4" 85 149 80 2.2 1.710 3/8" 85 149 80 2.2 1.615 1/2" 105 205 125 3.8 3.720 3/4" 140 236 160 5.9 5.225 1" 160 281 250 10.9 10.540 1 1/2" 230 339 400 23 2050 2" 260 396 500 33 32
RAMA with bellows seal, BW - Classes 150 - 1500NPS Dimensions Flow
mm inch A B V Mass coefficientmm mm mm kg Cv
8 1/4" 110 160 65 3.5 1.710 3/8" 110 160 65 3.5 1.715 1/2" 140 200 80 5 3.720 3/4" 190 255 100 6.2 625 1" 245 310 130 13 1050 2" 410 470 260 37 30
CLAMA Check valve PN 20-250 - Classes 150 - 1500NPS Dimensions Flow
mm inch A B V Mass coefficientmm mm mm kg Cv
8 1/4" 85 55 40 2 1.710 1/4" 85 55 40 2 215 1/2" 105 63 48 2.5 320 3/4" 140 82 65 3.5 625 1" 180 100 82 5 10.540 1-1/2" 230 125 100 9 2250 2" 310 142 115 13 35
RAMA"light" PN 20-250 - Classes 150 - 1500NPS Dimensions
mm inch A B V Massmm mm mm kg
8 1/4" 90 140 65 1.210 3/8" 90 140 65 1.215 1/2" 90 140 65 1.2
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Pressure balancing devices
2 & 3 ways EQUIBAR
The solution to overpressure problems
The pressure balancing devices EQUIBAR 2 & 3 ways from VELAN allows to avoid overpressure problems that might occur inside the valve body.
2 ways EQUIBAR systemUnidirectionalAvoids "Boiler" effect
3 ways EQUIBAR system Bidirectional
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The 2 ways EQUIBAR includes a spring valve inside its body whichhelps to limit overpressure inside the valve.This integrated valve allows the isolation of the tubing during periodic tests.The isolation valve uses a RAMA technology dismountable seat.
Thanks to the 3 ways EQUIBAR device, the held up volume is auto-matically in communication with the inlet nozzle that presents thehighest pressure.This system is isolable by means of 2 taps that can be locked.The isolation valve uses a RAMA technology dismountable seat.
On site 2 ways EQUIBAR
Typical mounting of a 3 ways EQUIBAR
2 ways EQUIBAR PN 20-250 NPS Dimensions
mm inch A B V Massmm mm mm kg
15 1/2" 55 130 80 3.8
3 ways EQUIBAR PN 250NPS Dimensions
mm inch A B V Massmm mm mm kg
15 1/2" 146 156 80 6.7
90 rue Challemel Lacour - F69637 LYON Cedex 07 - FrancePhone : +33 (0)4 78 61 67 00 - Fax: +33 (0)4 78 72 12 18
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Qualified by ELECTRICITE DE FRANCE and selected by the major nuclear companies FRAMATOMEANP, WESTINGHOUSE, EDF, EDF UTO, TECHNICATOME, QNPJVC, LANPC...,
the RAMA valve has been satisfactorily operating for many years in nuclear applications in France and over the world...
The RAMA technology results from the long experience of VELAN in the field of high performanceand nuclear valves. The RAMA valve benefits from the feedback gained in closed co-operation with
the end-users of the nuclear facilities in France and over the world.This globe valve is designed for shut-off and flow control service. It complies with the stringent
requirements of the main worldwide construction codes: ASME, RCCM, OTT...
Its design allows, according to simple operations, in-line maintenance without limitation: packing repair, seat and disc replacement, stem replacement.
In-line servicing is limited to the visual control of the packing tightness.The modular RAMA design ensures the possibility to upgrade the valve without pipe disassembly
allowing to integrate any further technology requirements.
Several thousands of RAMA globe valves sold all over the worldA wide range, reference for more than 15 years
Construction Carbon steel Stainless steelDesignation NF-EN ASTM NF-EN ASTM
Body P305GH A105 X2CrNiMo17-12-2 A182F316LDisc X2CrNiMo17-12-2 A182F316L X2CrNiMo17-12-2 A182F316LSeat X2CrNiMo17-12-2 X2CrNiMo17-12-2 A182F316L
Seat gasket Expanded graphiteStem X5CrNiCuMo16-4 A564gr630 X5CrNiCuMo16-4 A564gr630
Packing rings Expanded graphiteStem nut CuAl11Ni B150C63000 CuAl11Ni B150C63000
Cage X5CrNiCuMo16-4 A564gr630 X5CrNiCuMo16-4 A564gr630Gland nut X12Cr13 A194gr6 X12Cr13 A194gr6Gland stud X6NiCrTiMoVB25-15-2 A453gr660 X6NiCrTiMoVB25-15-2 A453gr660
Materials
Other materials on request