Siemens Non-spring return Spring return
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![Siemens 259-02010 Valve assy NC 1/2" 4.0Cv FxF Brass Trim Elect Act NSR float | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/259-02010_medium.jpg?v=1720021902)
259-02010 | Valve assy NC 1 / 2" 4.0Cv FxF Brass Trim Elect Act NSR float | Siemens
Brand: Siemens
SKU: 259-02010
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![Siemens 255-01139 MZ Series 3W Valve Asy, ANSI 250, Water, Linear, 1" FxF, 10 Cv, Elect/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/255-01139_medium.jpg?v=1720021832)
255-01139 | MZ Series 3W Valve Asy, ANSI 250, Water, Linear, 1" FxF, 10 Cv, Elect / Mech | Siemens
Brand: Siemens
SKU: 255-01139
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![Siemens 255-01136 MZ Series 3W Valve assy ANSI 250 Water Mix Linear 1/2" FxF 2.5Cv 200 N | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/255-01136_medium.jpg?v=1720021825)
255-01136 | MZ Series 3W Valve assy ANSI 250 Water Mix Linear 1 / 2" FxF 2.5Cv 200 N | Siemens
Brand: Siemens
SKU: 255-01136
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![Siemens 255-01135 MZ Series 3W Valve assy ANSI 250 Water Mix Linear 1/2" FxF 1.6Cv 200 N | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/255-01135_medium.jpg?v=1720021827)
255-01135 | MZ Series 3W Valve assy ANSI 250 Water Mix Linear 1 / 2" FxF 1.6Cv 200 N | Siemens
Brand: Siemens
SKU: 255-01135
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![Siemens 255-01121 MZ Series 2W Valve Assy, ANSI 250,NO, Linear, 1/2 In FxF, 1.6 Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/255-01121_medium.jpg?v=1720021834)
255-01121 | MZ Series 2W Valve Assy, ANSI 250, NO, Linear, 1 / 2 In FxF, 1.6 Cv, El / Mech | Siemens
Brand: Siemens
SKU: 255-01121
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![Siemens 254-01138 MZ Series 3W Valve Assy, ANSI 250, Water, Linear, 3/4", FxF, 6.3 Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01138_medium.jpg?v=1720021868)
254-01138 | MZ Series 3W Valve Assy, ANSI 250, Water, Linear, 3 / 4", FxF, 6.3 Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01138
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![Siemens 254-01136 MZ Series 3W Valve Assembly, ANSI 250, Water, Linear, 1/2", FxF, 2.5Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01136_medium.jpg?v=1720021823)
254-01136 | MZ Series 3W Valve Assembly, ANSI 250, Water, Linear, 1 / 2", FxF, 2.5Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01136
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![Siemens 254-01134 MZ Series 3W Valve Assy, ANSI 250, Linear, 1/2", FxF, 1 Cv, 200N, Elect/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01134_medium.jpg?v=1720021817)
254-01134 | MZ Series 3W Valve Assy, ANSI 250, Linear, 1 / 2", FxF, 1 Cv, 200N, Elect / Mech | Siemens
Brand: Siemens
SKU: 254-01134
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![Siemens 254-01132 MZ Series 3W Valve Assy, ANSI 250, Water, Linear, 1/2", FxF, 0.4 Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01132_medium.jpg?v=1720021812)
254-01132 | MZ Series 3W Valve Assy, ANSI 250, Water, Linear, 1 / 2", FxF, 0.4 Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01132
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![Siemens 254-01126 MZ Series 2W Valve Assembly, ANSI 250, NO, Linear, 1/2", FxF, 4 Cv, Elect/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01126_medium.jpg?v=1720021817)
254-01126 | MZ Series 2W Valve Assembly, ANSI 250, NO, Linear, 1 / 2", FxF, 4 Cv, Elect / Mech | Siemens
Brand: Siemens
SKU: 254-01126
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![Siemens 254-01123 MZ Series Valve Assembly, ANSI 250, 2W, NO, Linear, 1/2", FxF, 2.5Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01123_medium.jpg?v=1720021824)
254-01123 | MZ Series Valve Assembly, ANSI 250, 2W, NO, Linear, 1 / 2", FxF, 2.5Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01123
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![Siemens 254-01121 MZ Series Valve Assembly, ANSI 250, 2W, NO, Linear, 1/2", FxF, 1.6Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01121_medium.jpg?v=1720021817)
254-01121 | MZ Series Valve Assembly, ANSI 250, 2W, NO, Linear, 1 / 2", FxF, 1.6Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01121
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![Siemens 254-01106 MZ Series Valve Assembly, ANSI 250, 2W, NC, Linear, 1/2", FxF, 1.6Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01106_medium.jpg?v=1720021837)
254-01106 | MZ Series Valve Assembly, ANSI 250, 2W, NC, Linear, 1 / 2", FxF, 1.6Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01106
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![Siemens 254-01100 MZ Series Valve Assembly, ANSI 250, 2W, NC, Linear, 1/2", FxF, 0.4 Cv, El/Mech | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/254-01100_medium.jpg?v=1720021785)
254-01100 | MZ Series Valve Assembly, ANSI 250, 2W, NC, Linear, 1 / 2", FxF, 0.4 Cv, El / Mech | Siemens
Brand: Siemens
SKU: 254-01100
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![Siemens 248-00234 Zone valve, 3-way, 1/2", 4.0 Cv, NPT w/ 24Vac, SSP61U actuator, 0-10Vdc, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/248-00234_medium.jpg?v=1720021792)
248-00234 | Zone valve, 3-way, 1 / 2", 4.0 Cv, NPT w / 24Vac, SSP61U actuator, 0-10Vdc, NSR | Siemens
Brand: Siemens
SKU: 248-00234
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![Siemens 248-00213 Zone valve, 2-way, 1", 7.0 Cv, NPT w/ 24Vac, SSP61U actuator, 0-10Vdc, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/248-00213_medium.jpg?v=1720021786)
248-00213 | Zone valve, 2-way, 1", 7.0 Cv, NPT w / 24Vac, SSP61U actuator, 0-10Vdc, NSR | Siemens
Brand: Siemens
SKU: 248-00213
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![Siemens 248-00211 Zone valve, 2-way, 1/2", 2.5 Cv, NPT w/ 24Vac, SSP61U actuator, 0-10Vdc, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/248-00211_medium.jpg?v=1720021788)
248-00211 | Zone valve, 2-way, 1 / 2", 2.5 Cv, NPT w / 24Vac, SSP61U actuator, 0-10Vdc, NSR | Siemens
Brand: Siemens
SKU: 248-00211
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![Siemens 245-00514 Zone valve, 2-way, 1/2", 4.0 Cv, SWT w/ 24Vac 0-10Vdc NSR actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/logo_b0e50cd9-389d-454a-9da6-623d610fcdc1_medium.png?v=1720021796)
245-00514 | Zone valve, 2-way, 1 / 2", 4.0 Cv, SWT w / 24Vac 0-10Vdc NSR actuator | Siemens (OBSOLETE)
Brand: Siemens
SKU: 245-00514
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![Siemens 245-00211 Zone valve, 2-way, 1/2", 2.5 Cv, NPT w/ 24Vac 0-10Vdc NSR actuator | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/245-00211_medium.jpg?v=1720021813)
245-00211 | Zone valve, 2-way, 1 / 2", 2.5 Cv, NPT w / 24Vac 0-10Vdc NSR actuator | Siemens
Brand: Siemens
SKU: 245-00211
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![Siemens 231-04301-6 PICV, 1/2 inch, 6 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/231-04301-6.5_22b33508-ea98-4b63-b78e-fddf327812bc_medium.jpg?v=1720021706)
231-04301-6 | PICV, 1 / 2 inch, 6 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Siemens
Brand: Siemens
SKU: 231-04301-6
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![Siemens 231-04301-5 PICV, 1/2 inch, 5 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/231-04301-5.5_medium.jpg?v=1720021680)
231-04301-5 | PICV, 1 / 2 inch, 5 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Siemens
Brand: Siemens
SKU: 231-04301-5
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![Siemens 231-04301-3 PICV, 1/2 inch, 3 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/231-04301-3.5_0d88ae7d-145b-4f36-af7c-d9f6c8d316db_medium.jpg?v=1720021717)
231-04301-3 | PICV, 1 / 2 inch, 3 GPM max. flow preset, with SSD Actuator, 0-10V, NSR | Siemens
Brand: Siemens
SKU: 231-04301-3
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![Siemens 230-04300-2.5 PICV, 1/2 inch, 2.5 GPM max flow preset, with SSD Actuator, 3P (floating), NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/230-04300-2.5_medium.jpg?v=1720021658)
230-04300-2.5 | PICV, 1 / 2 inch, 2.5 GPM max flow preset, with SSD Actuator, 3P (floating), NSR | Siemens
Brand: Siemens
SKU: 230-04300-2.5
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![Siemens 230-04300-0.5 PICV, 1/2 inch, 0.5 GPM max flow preset, with SSD Actuator, 3P (floating), NSR | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/230-04300-0.5_medium.jpg?v=1720021676)
230-04300-0.5 | PICV, 1 / 2 inch, 0.5 GPM max flow preset, with SSD Actuator, 3P (floating), NSR | Siemens
Brand: Siemens
SKU: 230-04300-0.5
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