McDonnell & Miller Mechanical Water Feeders

McDonnell & Miller Series 47/247 Water Feeders

Series 47/247 are for steam and hot water boilers with cold water feed applications. They provide continuous maintenance of minimum safe water levels and are independent of electrical service. They feature proportional feed action, quick hook-up fittings, and a quick-change replaceable cartridge valve and strainer.

Features:

• No. 2 switch
• Manual reset
• Model 247 can be field upgraded with a No. 2 switch to add low water cut-off function
• Maximum water supply pressure: 150 psi (10.5 kg/cm2)
• Maximum inlet water temperature: 120°F (49°C)
• Maximum boiler pressure: 25 psi (1.8 kg/cm²)

McDonnell & Miller Series 47-2/247-2 Mechanical Water Feeder/LWCOs

Series 47-2/247-2 combination water feeders and LWCOs are ideal for steam and hot water boilers with cold water feed. They provide continuous minimum safe water level maintenance, independent of electrical service.

Features:

• Proportional feed action
• Quick hook-up fittings provided
• Quick-change replaceable cartridge valve and strainer
• Optional features
• No. 2 switch
• Manual reset
• Model 47 can be field upgraded with a No. 2 switch to add low water cut-off function
• Maximum water supply pressure 150 psi (10.5 kg/cm²)
• Maximum inlet water temperature 120°F (49°C)
• Maximum boiler pressure 25 psi (1.8 kg/cm²)

McDonnell & Miller Series 51/51-2 Mechanical Water Feeders/LWCOs

Series 51/51-2 combination mechanical water feeders/LWCOs are ideal for low-pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) capacity with cold water feed. They feature a quick-change replaceable cartridge valve and strainer.

Optional features:

• No. 2 switch
• Manual reset
• Float block
• Proportional feed action
• Model 51 can be field upgraded with a No. 2 switch to add a low water cut-off function
• Maximum water supply pressure 150 psi (10.5 kg/cm²)
• Maximum inlet water temperature 120°F (49°C)
• Maximum vessel pressure 35 psi (2.5 kg/cm²)

McDonnell & Miller Series 51-S/51-S-2 Mechanical Water Feeders/LWCOs

The Series 51-S/51-S-2 combination water feeder/LWCO is ideal for high capacity—up to 35,000 sq. ft. (3250m²)—low-pressure steam and hot water boilers with cold water feed.

Optional features:

• No. 2 switch
• Manual reset
• Float block
• Proportional feed action
• Maximum water supply pressure 100 psi (7 kg/cm²)
• Maximum inlet water temperature 120°F (49°C)
• Maximum vessel pressure 35 psi (2.5 kg/cm²)

McDonnell & Miller Series 53/53-2 Mechanical Water Feeders/LWCOs

Series 53/53-2 combination water feeders/LWCOs are for low-pressure steam and hot water boilers larger than 5,000 sq. ft. (465m²) with hot or cold water feed.

Optional features:

• No. 2 switch
• Manual reset
• Float block
• Proportional feed action
• Model 53 can be field upgraded with a No. 2 switch to add a low water cut-off function
• Maximum water supply pressure 150 psi (10.5 kg/cm²)
• Maximum inlet water temperature 120°F (49°C)
• Maximum vessel pressure 75 psi (5.3 kg/cm²)