mcdonnell miller
Blackhawk Supply offers McDonnell & Miller backflow preventers, pressure-reducing valves, and water-mixing valves. Shop today!
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![Mcdonnell Miller 306800 Paddle Kit Model FS7-4W 6 and 1 Inch Stainless Steel | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995140_medium.jpg?v=1720024606)
306800 | Paddle Kit Model FS7-4W 6 and 1 Inch Stainless Steel | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 306800
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![Mcdonnell Miller 306700 Paddle Kit Model FS7-28 6 and 1 Inch Bronze | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995079_8c9318aa-551a-45fb-a337-47d8323e1d93_medium.jpg?v=1714471694)
306700 | Paddle Kit Model FS7-28 6 and 1 Inch Bronze | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 306700
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![Mcdonnell Miller 305200 Switch Replacement FS4-33 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/1000757_medium.jpg?v=1717077546)
305200 | Switch Replacement FS4-33 | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 305200
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![Mcdonnell Miller 195000 Blow Down Valve TC-4 Test-N- Check 1 Inch NPT 250 Degrees Fahrenheit 160 Pounds per Square Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/55575_2dca972f-30f9-4146-af6a-35bddb0b5bcd_medium.jpg?v=1720716249)
195000 | Blow Down Valve TC-4 Test-N- Check 1 Inch NPT 250 Degrees Fahrenheit 160 Pounds per Square Inch | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 195000
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![Mcdonnell Miller 182625 Relief Valve Model 260-1 1-1/2 Inch NPT 30 Pounds per Square Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995211_7ac350de-d3a1-4fdd-9489-6ca04bb9cdf7_medium.jpg?v=1720024462)
182625 | Relief Valve Model 260-1 1-1 / 2 Inch NPT 30 Pounds per Square Inch | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 182625
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![Mcdonnell Miller 182030 Relief Valve Model 250-1 1.437M BTU 1 Inch NPT 40 Pounds per Square Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995173_41581c35-5e41-4e8e-a752-366c43ead3a9_medium.jpg?v=1720024448)
182030 | Relief Valve Model 250-1 1.437M BTU 1 Inch NPT 40 Pounds per Square Inch | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 182030
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![Mcdonnell Miller 181925 Relief Valve 250-1-30 1 Inch NPT Bronze 30 Pounds per Square Inch Gauge 250 Degrees Fahrenheit | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/30248_f7bf599c-292e-43ac-a185-feb634743001_medium.jpg?v=1720024468)
181925 | Relief Valve 250-1-30 1 Inch NPT Bronze 30 Pounds per Square Inch Gauge 250 Degrees Fahrenheit | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 181925
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![Mcdonnell Miller 180800 Control PFC-1-G Direct Acting Liquid Level 3-15 Pounds per Square Inch Output 1 Inch NPT 250 PSIG | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995256_e024db2d-3f1d-416e-8972-265257f94fd6_medium.jpg?v=1720024478)
180800 | Control PFC-1-G Direct Acting Liquid Level 3-15 Pounds per Square Inch Output 1 Inch NPT 250 PSIG | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 180800
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![Mcdonnell Miller 179540 Probe P-2-SS Teflon Coated 36 Inch Stainless Steel | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/200595_47a5bc68-c77a-4e6a-8e9b-8edbca9e8ace_medium.jpg?v=1720024481)
179540 | Probe P-2-SS Teflon Coated 36 Inch Stainless Steel | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179540
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![Mcdonnell Miller 179535 Probe P-2-SS Teflon Coated 24 Inch Stainless Steel | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/786104_901e3e06-bac5-49a1-ab46-9c9c99dbe961_medium.jpg?v=1720024486)
179535 | Probe P-2-SS Teflon Coated 24 Inch Stainless Steel | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179535
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![Mcdonnell Miller 179530 Probe Rod 12 Inch 316 SS | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/968936_7b5790f6-767e-44a3-bbed-129dd1b72bd0_medium.jpg?v=1717077218)
179530 | Probe Rod 12 Inch 316 SS | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179530
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![Mcdonnell Miller 179527 Holder Probe for 4 Level Remote Sensor Model RS-4-BR-1 2-1/2 Inch NPT | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995233_6a9b5459-6081-4779-951b-b90fe79e6c53_medium.jpg?v=1720024484)
179527 | Holder Probe for 4 Level Remote Sensor Model RS-4-BR-1 2-1 / 2 Inch NPT | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179527
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![Mcdonnell Miller 179525 Sensor RS-2BR-1 2 Level High Pressure 406 Degrees Fahrenheit 250 Pounds per Square Inch Gauge | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/200596_139ef7ca-408d-45f7-bf5b-08160b1a5c66_medium.jpg?v=1720024475)
179525 | Sensor RS-2BR-1 2 Level High Pressure 406 Degrees Fahrenheit 250 Pounds per Square Inch Gauge | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179525
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![Mcdonnell Miller 179157 Probe Rod Assembly G-3-SS 36 Inch 316 SS | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/mcdonnell-and-miller_medium.gif?v=1714471351)
179157 | Probe Rod Assembly G-3-SS 36 Inch 316 SS | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179157
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![Mcdonnell Miller 179156 Probe G-2-SS Ground 24 Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/786102_5a41ae73-ae73-42e1-9905-014a2fc5b2c2_medium.jpg?v=1717449945)
179156 | Probe G-2-SS Ground 24 Inch | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 179156
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![Mcdonnell Miller 176319 Probe High Pressure Model PA-750-HP | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/995120_c30de501-8e19-47d3-9cba-2fad1774afde_medium.jpg?v=1717077206)
176319 | Probe High Pressure Model PA-750-HP | Mcdonnell Miller
Brand: Mcdonnell Miller
SKU: 176319
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