BRIEF DESCRIPTIONS
High temperature steam pressure reducer is the ultimate selection for high pressure and temperature steam reduction service, the system employs many advanced concept and benefits to offer with best solution with effective performance of high pressure and temperature conditions.
High temperature steam pressure reducer adopted with highly pressure rated forged body of PRV with pilot plug design which gives supreme stability and controlling performance during continuous operation under high pressure and temperature, its design pressure is <17.0 MPa, design temperature is < 570 DegreeC, steam flow range is from 10% to 100%.
DESIGN PRINCIPLE
Assemble Parts |
Basic Parameters |
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Assemble Parts |
Basic Parameters |
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Pressure Reducing System |
Available inlet pressure: P1<14.0 MPa |
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Pressure Reducing Valve |
Available inlet temperature: T1<570 DegreeC |
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Orifice Plate |
Available Inlet flow rate: 10%~100% |
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Noise Level: <85 dbA |
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Desuperheater System | ||
Classical Venturi design |
Pressure Class |
Custom-design, |
Double Venturi Design | ||
Multiple Nozzle with Venturi Design | ||
Annular Nozzle with Venturi Design |
Size |
From DN200 to DN700 (8" to 28") |
Additional sizes on request |
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Feed Water Control System |
Design Temperature |
Maximal. 570 Degree C |
Feed Water Control Valve | ||
Strainer and Globe Valve |
Actuator |
Pneumatic |
Check Valve |
Other actuators on request |
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Electric |
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Safety System |
Installation |
Horizontal |
Safety Valve |
Connection |
Flange (ASME B16.5) |
Butt weld (Acc to request) |
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Instruments System |
Valves |
SA 105 |
Pressure Gauge |
SA 182 F11 |
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Thermometer |
SA 182 F22 |
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Pressure Transmitter |
SA 182 F91 |
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Thermocouple |
Additional Materials on request |
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Pipes |
SA-106B |
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Others Parts |
SA-355 P11 |
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Connection Pipe |
SA-355 P22 |
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Counter Flange and Fastens |
SA-355 P91 |
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Additional Materials on request |
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Applications |
Apply Standards |
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Power plant requirements for desuperheated steam |
NB/T47033-2013 |
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supplying units having limited operating temperatures. | ||
Control steam temperature and pressure to dryers in paper industry and sugar mills industry | ||
Reduction and control of superheated steam,where excess temperatures will harm the product |
PRESSURE REDUCING & DESUPERHEATING PART
Basic Control | |
Main Parts | |
NY963Y HP Steam Pressure Reducing Valve To suit the high pressure and temperature conditions, the NY963/663Y PRV uses forged material for body construction, design with pressure seal bonnet, trim applies with pilot design and multiple cage construction, which is capable of managing large pressure drops and reduces the negative effects of erosion, cavitation, and noise. With the different working condition, the cage can be custom-designed with flow characteristic including of equal-percentage and linear to obtain the highest accuracy of desired steam pressure. |
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Venturi Concept and Multiple Nozzle The desuperheaters reduce steam temperatures by introducing cooling water directly into the hot steam. Temperature reduction is essentially a matter of heat transfer, where the cooling water is placed in direct contact with steam and receives the necessary heat for evaporation. |
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Feed Water Control Valve The cage guided feed water control valve is basically a single seat structure but featured with cage design. The cage has favorable Interchangeability, be reached different flow characteristics including linear, equal-percentage and quick open, to get much higher precision of controlling. (Details please find control valve brochure) |
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Layout | |
SIZE AND DIMENSION
DRAWING |
No |
Item Name |
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1 |
Pressure Reducing Valve |
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2 |
Multipe Nozzle |
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3 |
Steam Pipeline |
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4 |
Safety Valve |
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5 |
Pressure Gauge |
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6 |
Bimetal Thermometer |
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7 |
Globe Valve |
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8 |
Strainer |
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12 |
Check Valve |
11 |
Feed Water Control Valve |
10 |
Throttle Valve |
9 |
Orifice Plate |
No |
CODE |
PRESSURE REUDCE VALVE |
STEAM PIPE OUTLET |
WATER CONTROL VALVE |
SAFETY VALVE |
1 |
GWY601 |
DN50 |
DN50 |
DN80 |
DN20 |
2 |
GWY601 |
DN80 |
DN65 |
DN100 |
DN25 |
3 |
GWY601 |
DN100 |
DN80 |
DN150 |
DN32 |
4 |
GWY601 |
DN125 |
DN100 |
DN200 |
DN40 |
5 |
GWY601 |
DN150 |
DN150 |
DN250 |
DN50 |
6 |
GWY601 |
DN175 |
DN200 |
DN300 |
DN65 |
7 |
GWY601 |
DN225 |
DN250 |
DN80 |
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8 |
GWY601 |
DN250 |
DN300 |
DN100 |
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9 |
GWY601 |
DN350 |
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10 |
GWY601 |
DN400 |
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11 |
GWY601 |
DN500 |
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12 |
GWY601 |
DN600 |
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13 |
GWY601 |
DN700 |
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14 |
GWY601 |
DN800 |
HP STEAM PRESSURE REDUCING VALVE
Benefits | |
Available sizes: DN80(3") up to DN250(10") Available rating: PN100 up to PN420, Class 600# –2500# Flow Characteristics: Linear, Equal Percentage Leakage Level: ANSI B16.104 CL IV Rangeability: 50:1 Temperature Range: -20~570 DegreeC Connection: Flange, Butt Weld Forged Full Machined Body Design To suit the high pressure and temperature conditions, the LV963/663Y PRV uses forged material for body construction, compare with casting body, forged full body has better mechanical property and strength endurance, able to handle thermal fatigue critical for reliable service, ensure the safe, trouble-free performance during the continuous operation |
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Very Tight shut-off The valve energized pilot balanced plug provides zero cc/min. leak rates, without penalty of huge actuators, even with metal to metal seats at full body pressure/temperature ratings, greatly increasing the valve's reliability. | |
Multihole Cage Design The Multihole cage guided trim is capable of managing large pressure drops and reduces the negative effects of erosion, cavitation, and noise. With the different working condition, the cage can be custom-designed with flow characteristic including of equal-percentage and linear to obtain the highest accuracy of desired steam pressure. |
Pilot Plug Design Pilot plug design, means in the closed position, the main plug within the valve is unbalanced with full steam pressure acting on top. Combined with the actuator thrust this creates an extremely high seat contact and ensures a very tight shut off without relying on auxiliary balancing seals and close tolerance sealing surfaces. When open high-pressure steam floods the valve to the underside of the main plug, balancing it and reducing the actuation thrusts required. This design not only provides repeatable, assured shut-off but prevents leak-induced damage to the valve seat. |
Interchangeability Design Unique plug and seat design allows for repeatable, provides longer intervals between maintenance and allows easy access to all components of the valve. specifications. |
Radiator Design Apply with Radiator Disc between body and actuator, protect the actuator from the overheating in working procession, ensure the stability of the actuator. |
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