|
 Dresser-Rand created the Magnum valve to operate
under nearly any conditions (low or high speed, pressure or temperature) and to be
compatible with any gas, including hydrogen, air, carbon dioxide, natural gas, ethylene,
propane, ammonia, and chlorine. It is also designed for longer life, high performance, affordability and short
cycle times from quote to shipment.
The Magnum valve features an advanced element geometry (bullet) and is strong and
light. Typically it is made from PEEK (PolyEtherEtherKetone), a high
strength
thermoplastic with excellent physical and thermal properties, including
resistance to
dirt, corrosion, liquid swelling, and high impact velocities. For specialized
services, like chlorine, specially formulated materials are available.
Features |
Benefits |
| High-strength, light valve element |
Operates at high compressor speeds and pressure
differentials |
| Non-metallic valve element |
Covers full spectrum of gas applications
Absorbs high impact velocities |
| Common element for all valves |
Reduces parts inventory
Increases interchangeability/availability of replacement parts
Minimizes replacement costs |
| Advanced valve element geometry |
Reduces fatigue stresses for extended life |
| Precision-guided valve elements and springs |
Increases reliability of moving parts for
long-term operation |
| Streamlined flow path with balanced seat, guard,
and lift areas |
Increases flow area and is more tolerant of
particulates and liquids in the gas |
| Contained centerbolt fastener |
Meets API 618 requirements |
| Custom valve selection using proprietary Dynamic
Valve Analysis software |
Optimizes valve performance; without effecting
reliability |
"Headless" design of the
Magnum valve
represents a step change in valve technology.
Finite element analysis (FEA) confirms that the
bending (tensile) stresses in the bullet have been virtually eliminated. By keeping
the stresses in compression, the fatigue strength increases, which maximizes valve
reliability. In addition, the Magnum valve springs are engineered to minimize the
fatigue stresses imposed by cyclic impact loading. Wire stresses are well below
material limits, even if the springs inadvertently surge to solid height.
Springs are offered in 17-7H stainless steel for most applications, but
Elgiloy® (a cobalt-chromium-nickel alloy) is available for especially corrosive services.
For optimal performance and efficiency, Magnum valves are custom designed for every
application by employing Dresser-Rand's proprietary Dynamic Valve Analysis (DVA) software.
The small bullets and simple flow geometry combine to yield a valve with the lowest
clearance of all Dresser-Rand valve types, which may help to increase cylinder
capacity. The Magnum valve design features a contained centerbolt fastener, which cannot
thread its way into the cylinder bore in the unlikely event of a centerbolt failure.
This design meets API 618 safety requirements.
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Magnum Valve
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