Boiler Controls

120601 McDonnell & Miller FS8-W - 1" Flow Switch General purpose flow switch w/NEMA 4X enclosure 120601. Mcdonnell & Miller 120601 Instruction Manual For general purpose applications with environmental exposure, or those requiring a...

McDonnell & Miller FS251 General Purpose Flow Switch With NEMA 1 Enclosure 120611, Replaces FS4-3. Information: McDonnell & Miller FS4 Brochure McDonnell & Miller FS4 Instruction Manual Features Universal design serves the widest...

114400 McDonnell & Miller FS4-3 1" Flow Switch 1" NPT. Click here for more info on Mcdonnell Miller Flow Switches Universal design serves the widest variety of applications. For starting or stopping electrically operated equipment such as signal...

120610 McDonnell & Miller FS254 Flow Switch With NEMA 4 Enclosure, Replaces FS8-W. McDonnell & Miller FS254 Brochure Features: Universal design serves the widest variety of applications For starting or stopping electrically operated equipment...

113021 Bell & Gossett Automatic Air Vent Model Number 87 1/2" Female & 3/4" Male. 113021 Bell & Gossett Air Vent Brochure This Item Usually Ships The Same Day!

113200 McDonnell & Miller FS-1 1/2" Liquid Flow Switch. McDonnell & Miller FS1 Instruction Manual Features: For general purpose applications where high sensitivity is required and moderate or low flow rates are encountered such as air...

A2D33 - Goulds Pump Master Float Switch. This Item Usually Ships The Same Day!

114639 McDonnell & Miller FS4-3RP-T 1" Flow Switch FS4-3 With Test Button. McDonnell & Miller FS4 Brochure McDonnell & Miller FS4 Instruction Manual Universal design serves the widest variety of applications. For starting or stopping...

123400 McDonnell & Miller Air Flow Switch Model AF3. McDonnell & Miller AF1 Flow Switch Instruction Manual For general purpose low velocity applications where the most economical flow switch is desired. Paddle fits 8" (203mm) minimum...

113001 Bell & Gossett Model 7 Air Vent. The B&G Air Vent model 7 has a maximum pressure of 75 psi and 240 degrees F and 1/8" IPM. Please see the brochure for more info. Information: 113001 Bell & Gossett Air Vent Brochure This Item Usually...

123000 McDonnell & Miller Air Flow Switch AF1-S. Mcdonnell & Miller AF1 Flow Switch Instruction Manual For general purpose applications with medium and high velocity requirements: Paddle fits 8" (203mm) minimum duct size, or 6" (152mm) if...

113076 Bell & Gossett Air Vent 107A 3/4" Cast Iron Body, 150psi 250°F. Information: Bell & Gossett 107A High Capacity Air Vent Brochure Bell & Gossett 107A High Capacity Air Vent Technical Brochure Bell & Gossett 107A High...

113246 Bell & Gossett Automatic Air Vent Model 98. Float style automatic brass air vent eliminates troublesome air from hydronic systems. The 98 air vent is designed with non-ferrous internals and a brass body and cap. Maximum working pressure:...

114780 McDonnell & Miller FS5-1 - 1" Flow Switch 114780. 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 &...

127002 Bell & Gossett TB-1 Thermoflo Balancer The Thermoflo Balancer is an indicating flow meter and balancing device for measuring and balancing hydronic circuits. Installed in each circuit of a system, it permits simple balancing to...

126400 McDonnell & Miller Make-Up Water Feeder Model 21. Mcdonnell & Miller Model 21 Instruction Manual For boiler receiver tanks Direct mounting eliminates need for equalizing connections Proportional feed action Mounting Flange – six...

113075 Bell & Gossett Vacuum Breaker #26. Designed to protect closed vessels and piping systems against collapse when the induced vacuum exceeds design conditions. When used on steam heating systems, the No. 26 Vacuum Breaker controls induced...

169550 McDonnell & Miller Universal Water Feeder Uni-Match WFE-24V. McDonnell & Miller WFE-24V Instruction Manual McDonnell & Miller Universal Water Feeders are ideal for use in residential or small commercial applications. Versatile...

114760 McDonnell & Miller FS5-3/4 - 3/4" Flow Switch 114760. Information: McDonnell & Miller FS5 Instruction Manual Features: For general purpose applications requiring low flow rate sensitivity In-line configuration eliminates need for a pipe...

113222 Bell & Gossett Model 97 Automatic Air Vent. The number 97 is a float type automatic air vent that is designed to vent troublesome air from hydronic heating systems. Brass body with non-ferrous internals. Maximum working pressure: 150 PSI...