Boiler Controls
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114785 McDonnell & Miller FS5-J-1 Flow Switch 1 BSTB
McDonnell & Miller
$274.95114785 McDonnell & Miller FS5-J-1 Flow Switch 1 BSTB. McDonnell & Miller FS5 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Sizes available: 3/4" NPT, 1" NPT Materials of construction: Brass, carbon...$274.95 -
115654 McDonnell & Miller FS6-WJ-1 Flow Switch 1 BSTP
McDonnell & Miller
$484.95115654 McDonnell & Miller FS6-WJ-1 Flow Switch 1 BSTP. *Please note image is generic. McDonnell & Miller FS6 Instruction Manual This McDonnell & Miller flow switch is for heavy duty applications where high sensitivity is required,...$484.95 -
122920 McDonnell Miller AF1-J Air Flow Switch
McDonnell & Miller
$214.95122920 McDonnell Miller AF1-J Air Flow Switch. *Please note image is generic. McDonnell & Miller AF1 Flow Switch Instruction Manual For general purpose applications with medium and high velocity requirements: Paddle fits 8" (203mm) minimum...$214.95 -
120602 McDonnell & Miller FS8-WJ Flow Switch 1 BSTP
McDonnell & Miller
$284.95120602 McDonnell & Miller FS8-WJ Flow Switch 1 BSTP. *Please note image is generic. Information: Mcdonnell & Miller 120601 Instruction Manual Features: For general purpose applications with environmental exposure, or those...$284.95 -
119980 McDonnell & Miller FS7-4LJ Flow Switch 1-1 4 BSTP
McDonnell & Miller
$484.95119980 McDonnell & Miller FS7-4LJ Flow Switch 1-1 4 BSTP. *Please note image is generic. McDonnell & Miller FS7 Overview McDonnell & Miller FS7 Instruction Manual Features: Universal design serves the widest variety of large pipe...$484.95 -
115650 McDonnell & Miller FS6-J-1 Flow Switch 1 BSTP
McDonnell & Miller
$424.95115650 McDonnell & Miller FS6-J-1 Flow Switch 1 BSTP. *Please note image is generic. McDonnell & Miller FS6 Instruction Manual Features: In-line configuration eliminates need for a pipe tee Very high flow capacity Actuates at extremely...$424.95 -
115550 McDonnell & Miller FS6-J-3 4 Flow Switch 3 4 BSTP
McDonnell & Miller
$424.95115550 McDonnell & Miller FS6-J-3 4 Flow Switch 3 4 BSTP. *Please note image is generic. McDonnell & Miller FS6 Instruction Manual This McDonnell & Miller flow switch is for heavy duty applications where high sensitivity is required,...$424.95 -
1AVCW Armstrong 3/4" (1/2" ) Air Vent
Armstrong
$524.951AVCW Armstrong 3/4" (1/2" ) Air Vent. 1-AV—A cast iron air vent that uses a free-floating lever that closes positively, ensuring a leak tight closing under all conditions. This vent is good for low capacity air/gas venting up to 300 psi (21...$524.95 -
153605 McDonnell & Miller RBT-3000 LWCO & Fuel Economizer
McDonnell & Miller
$264.95153605 McDonnell & Miller RBT-3000 LWCO & Fuel Economizer. Technical Brochure The RBT-3000 is a combination Low-Water Safety Cut-Off and Fuel-Saving controller for residential heating systems. The Low Water Cut-Off is specifically designed...$264.95 -
144693 McDonnell & Miller RB-24E-S Low Water Cut Off
McDonnell & Miller
$184.95144693 McDonnell & Miller RB-24E-S Low Water Cut Off. This Item Usually Ships The Same Day!$184.95 -
407444-000 Armstrong Vent Air 1/8"npt
Armstrong
$38.70407444-000 Armstrong Vent Air 1/8"npt This Item Usually Ships Same Day!$38.70 -
181425 McDonnell & Miller Relief Valve 250-3/4-45
McDonnell & Miller
$184.95181425 McDonnell & Miller Relief Valve 250-3/4-45. Features and Benefits: For tanks and hydronic heating systems Protects against over-pressure Minimizes hammering with flash steam Low differential pressure – 3 psi (.21 kg/cm2) between...$184.95 -
181325 McDonnell & Miller Relief Valve 250-3/4-36
McDonnell & Miller
$184.95181325 McDonnell & Miller Relief Valve 250-3/4-36. Features and Benefits: For tanks and hydronic heating systems Protects against over-pressure Minimizes hammering with flash steam Low differential pressure – 3 psi (.21 kg/cm2) between...$184.95