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Choose from 12000+ Siemens products, from accessories and components to meters, controllers, valves and actuators. Shop today!
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![Siemens 599-02042 MT Series 1/2" 2W Valve, 4.0Cv, NO, Mod Eq Percent, Brass Trim, FxUM, ANSI 250 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-02042_medium.jpg?v=1720022627)
599-02042 | MT Series 1 / 2" 2W Valve, 4.0Cv, NO, Mod Eq Percent, Brass Trim, FxUM, ANSI 250 | Siemens
Brand: Siemens
SKU: 599-02042
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![Siemens 599-02012 MT Series 3/4" 2W Valve, 6.3 Cv, NC, Mod Eq Percent, Brass Trim, FxUM, ANSI 250 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-02012_medium.jpg?v=1720022651)
599-02012 | MT Series 3 / 4" 2W Valve, 6.3 Cv, NC, Mod Eq Percent, Brass Trim, FxUM, ANSI 250 | Siemens
Brand: Siemens
SKU: 599-02012
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![Siemens 599-01134 MZ Series 3-Way Valve 1/2", 1.0 Cv, Linear, Brass Trim, FxF, ANSI 250 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-01134_medium.jpg?v=1720022589)
599-01134 | MZ Series 3-Way Valve 1 / 2", 1.0 Cv, Linear, Brass Trim, FxF, ANSI 250 | Siemens
Brand: Siemens
SKU: 599-01134
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![Siemens 599-01083 Valve Actuator, Pneumatic, 4-inch, 10-15 psi, 3/4-inch Stroke, 1/8-inch NPT | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-01083_medium.jpg?v=1720022581)
599-01083 | Valve Actuator, Pneumatic, 4-inch, 10-15 psi, 3 / 4-inch Stroke, 1 / 8-inch NPT | Siemens
Brand: Siemens
SKU: 599-01083
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![Siemens 599-00234 599 Series Zone Valve, 1/2", 3W, 4.0Cv, linear, ANSI 125, 1/10" stroke, NPT | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-00234_medium.jpg?v=1720022635)
599-00234 | 599 Series Zone Valve, 1 / 2", 3W, 4.0Cv, linear, ANSI 125, 1 / 10" stroke, NPT | Siemens
Brand: Siemens
SKU: 599-00234
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![Siemens 599-00214 599 Series Zone Valve, 1/2", 2W, 4.0Cv, linear, ANSI 125, 1/10" stroke, NPT | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/599-00214_medium.jpg?v=1720022603)
599-00214 | 599 Series Zone Valve, 1 / 2", 2W, 4.0Cv, linear, ANSI 125, 1 / 10" stroke, NPT | Siemens
Brand: Siemens
SKU: 599-00214
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![Siemens 331-3060 Damper Actuator, Pneu No 6, 4" Stroke 3-13psi Pivot Mt Ext Temp Range, UL Rec | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/331-3060_medium.jpg?v=1720022368)
331-3060 | Damper Actuator, Pneu No 6, 4" Stroke 3-13psi Pivot Mt Ext Temp Range, UL Rec | Siemens
Brand: Siemens
SKU: 331-3060
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![Siemens 331-3001 Damper Actuator, Pneu No 4, 4" Stroke, 3-13psi, Integral Pivot, Pivot Post | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/331-3001_medium.jpg?v=1720022349)
331-3001 | Damper Actuator, Pneu No 4, 4" Stroke, 3-13psi, Integral Pivot, Pivot Post | Siemens
Brand: Siemens
SKU: 331-3001
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![Siemens 278-03077 Valve assy Hi Temp 2W NC 1" 10Cv Lin SS Trim FxF, 8" Pneu Act | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/278-03077_medium.jpg?v=1720022241)
278-03077 | Valve assy Hi Temp 2W NC 1" 10Cv Lin SS Trim FxF, 8" Pneu Act | Siemens
Brand: Siemens
SKU: 278-03077
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![Siemens 274-03186 Valve assy 2W NC 1-1/4", 16Cv, Eq Pct Brass Trim FxF, Prop El-Hydraul Act SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/274-03186_medium.jpg?v=1720022062)
274-03186 | Valve assy 2W NC 1-1 / 4", 16Cv, Eq Pct Brass Trim FxF, Prop El-Hydraul Act SR | Siemens
Brand: Siemens
SKU: 274-03186
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![Siemens 274-03079 Valve assy 2W NC 1-1/2" 25Cv Lin SS Trim Hi Temp Pkg FxF Prop El-Hydraul Act SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/274-03079_medium.jpg?v=1720022033)
274-03079 | Valve assy 2W NC 1-1 / 2" 25Cv Lin SS Trim Hi Temp Pkg FxF Prop El-Hydraul Act SR | Siemens
Brand: Siemens
SKU: 274-03079
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![Siemens 268-03204 Valve assy 3W Mix 1-1/4" 16Cv Eq Pct/Lin Brass Trim FxF, 4" Pneu Act 3-8psi | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/268-03204_medium.jpg?v=1720022035)
268-03204 | Valve assy 3W Mix 1-1 / 4" 16Cv Eq Pct / Lin Brass Trim FxF, 4" Pneu Act 3-8psi | Siemens
Brand: Siemens
SKU: 268-03204
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![Siemens 257-02069B MT Series 3W Valve Assembly, ANSI 250, Linear, 1/2", FxF, 4 Cv, 3-8psi SR, Pnu | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/257-02069B_medium.jpg?v=1720021877)
257-02069B | MT Series 3W Valve Assembly, ANSI 250, Linear, 1 / 2", FxF, 4 Cv, 3-8psi SR, Pnu | Siemens
Brand: Siemens
SKU: 257-02069B
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![Siemens 257-02038 MT Series 2W Valve Assy, ANSI 250, NO, Mod Eq Pct, 1/2", FxF, 2.5 Cv, 3-8psi SR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/257-02038_medium.jpg?v=1720021874)
257-02038 | MT Series 2W Valve Assy, ANSI 250, NO, Mod Eq Pct, 1 / 2", FxF, 2.5 Cv, 3-8psi SR | Siemens
Brand: Siemens
SKU: 257-02038
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![Siemens 171A-10354 599 Series 3-way, 1/2", 2.5 Cv Ball Valve, 3-Pos Float, NSR Actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/171A-10354_medium.jpg?v=1720021399)
171A-10354 | 599 Series 3-way, 1 / 2", 2.5 Cv Ball Valve, 3-Pos Float, NSR Actuator | Siemens
Brand: Siemens
SKU: 171A-10354
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![Siemens QPM2162D Duct Sensor CO2 + Temperature + Relative Humidity with Display, 0-10V | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QPM2162D_medium.jpg?v=1720023789)
QPM2162D | Duct Sensor CO2 + Temperature + Relative Humidity with Display, 0-10V | Siemens
Brand: Siemens
SKU: QPM2162D
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![Siemens QFM2101 Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QFM2101_medium.jpg?v=1720023795)
QFM2101 | Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Siemens
Brand: Siemens
SKU: QFM2101
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![Siemens QFA4171 Outside Air RH and Temp Sensor, 2 percent certified, RH: 4-20 mA T: 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QFA4171_medium.jpg?v=1720023820)
QFA4171 | Outside Air RH and Temp Sensor, 2 percent certified, RH: 4-20 mA T: 4-20 mA | Siemens
Brand: Siemens
SKU: QFA4171
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![Siemens QAM2012.750 DuctPoint Temperature Sensor, 1K Ohm Platinum (385 Alpha) 25-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2012.750_medium.jpg?v=1720023799)
QAM2012.750 | DuctPoint Temperature Sensor, 1K Ohm Platinum (385 Alpha) 25-Foot | Siemens
Brand: Siemens
SKU: QAM2012.750
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![Siemens QAE2012.005 Immersion Well Temperature Sensor, 1K Ohm Platinum (385 Alpha), 2.5" Probe | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAE2012.005_medium.jpg?v=1720023761)
QAE2012.005 | Immersion Well Temperature Sensor, 1K Ohm Platinum (385 Alpha), 2.5" Probe | Siemens
Brand: Siemens
SKU: QAE2012.005
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![Siemens QAA1011.AASU Button Room Temperature Sensor, 1K Ohm Platinum RTD (375), Stainless Steel | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAA1011.AASU_medium.jpg?v=1720023754)
QAA1011.AASU | Button Room Temperature Sensor, 1K Ohm Platinum RTD (375), Stainless Steel | Siemens
Brand: Siemens
SKU: QAA1011.AASU
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![Siemens AQE2000.005 Immersion Well, 2.5" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/AQE2000.005_medium.jpg?v=1720022899)
AQE2000.005 | Immersion Well, 2.5" | Siemens
Brand: Siemens
SKU: AQE2000.005
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![Siemens AQA2200-INTL 2x4 Wall Box Adapter Plate | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/AQA2200-INTL_medium.jpg?v=1720022883)
AQA2200-INTL | 2x4 Wall Box Adapter Plate | Siemens
Brand: Siemens
SKU: AQA2200-INTL
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![Siemens 7MF15654BB105EA1 SENSOR, LIQUID/GAS, 0-10V, 0-15 PSIG | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/7MF15654BB105EA1_medium.jpg?v=1720022851)
7MF15654BB105EA1 | SENSOR, LIQUID / GAS, 0-10V, 0-15 PSIG | Siemens
Brand: Siemens
SKU: 7MF15654BB105EA1
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