McDonnell Miller

• Quick hook-up fittings provided for installation directly


• For applications requiring a water-tight, dust-tight, or a NEMA 4X rated flow switch

• For applications requiring a water-tight, dust-tight, or a NEMA 4X rated flow switch


• For McDonnell & Miller Series 47, 67 and 70B boiler control blow down valve replacement
• Full-ported ball action valve

Series 150S
• For commercial and industrial low or high pressure boiler applications
• For boilers of any steaming capacity
• Monel bellows provides corrosion resistance
• Maximum pressure 150 psi (10.5 kg/cm2)

• Primary low water fuel cut-off protection and pump control for commercial and industrial steam boilers

• For residential, commercial and industrial low or high pressure boiler applications

• For commercial and industrial low or high pressure steam boilers
• Maintains consistent water level regardless of pressure
• Water column with integral tappings for gauge glass and tri-cock installations
• For boilers of any steaming capacity
• No. 5 Switch included
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