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.
"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.
Features & Benefits Chart
|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|