美国ASCO阿斯卡S290气控阀系列参数如下：
压力操作,不锈钢阀体,管夹或对焊接口,DN10-65MM,介质温度:-10℃～+184℃，操作压差：0-16公斤
• Water Treatment
• Pharmaceutical
• Petrochemical
• Food & Beverage
• Reliable and Robust Proportional Control
 • Proportional flow control via 4-20mA signal (open loop)
 • Closed loop control via external process signal
 • Fail closed construction: valve closes upon loss of power
 • IP66 enclosure allows valve to be used outdoors
 • LED indicators for valve status and diagnostic functions
 • Position feedback signal for optimal flow control
 • Manual opening and closing function simplifies start up without controller system
 • High flow rate due to angled seat design
 • Handles viscous fluids up to 2700 SSU
• Energy Saving
 • No air consumption when set point position is reached
 • Low power consumption (3.6 W) when set point position is reached
 • PositionerD is factory adjusted and tested saving installation time and cost
• Easy Calibration
 • Initial regulation parameters can be modified on computer with downloadable APC software
 and ASCO RS232 converter cable
Specifications
Series Open Close Fluids Steam Min. Max.
Pipe
Sizes
(in)
Operator
Size
(mm)
Max.
Fluid
Temp.
˚F (C˚)
Body
Material
Response
Time (sec.)
Operating Pressure
Differential (psi)
Pilot
Pressure (psi)
290 with PositionerD
2-Way, Normally Closed
(Suffix PDB67) ¨
90 1" - 2"
1/2" - 3/4"
1" - 2"
1.0
2.0 2.0
2.0 2.5
1.0
63
0 - 150 Bronze or
Stainless Steel 0 - 230 366 60 116
¨�Accuracy < 2%; Hysteresis < 2%; Repeatability < 1%; Linearity < 5%
美国ASCO JOUCOMATIC公司是世界500强之一的美国艾默生集团成员，是一家主要生产和销售流体控制阀以及气动控制元件的跨国公司，具有100多年的生产技术经验，在拥有超过30家工厂，为客户提供超过23,000的流体控制产品。ASCO旗下拥有众多品牌:等都是ASCO的成员，其中ASCO/RED HAT，SIRAI品牌包括通用型产品及部分适用于特殊工矿的产品，可控制普通介质。GENERAL CONTROL为燃烧系列阀，介质可为燃油等。SCIENTIFIC是微型阀适用于医疗器械及其他分析产品行业。JOUCOMATIC是专业的气动控制产品的品牌，而TRI-POINT为压力温度开关产品。