Lochinvar 174036MF-113 Armstrong S-45 Circulator Pump

Product Description

The LOCHINVAR 174036MF-113 is a bronze-fitted cast iron in-line circulator pump built on the Armstrong S-45 platform. Rated at 1/4 horsepower and 1800 RPM, it delivers up to 110 gallons per minute with a maximum head of 16 feet. Operating on 115 VAC single-phase power at 60 Hz, this pump is designed for closed-loop hydronic heating and cooling systems. It ships without flanges, which are sold separately and must be specified at the time of order. Licensed mechanical contractors and plumbers are the typical installers for this class of in-line circulator.

This pump suits commercial and light-industrial hydronic piping systems that require a reliable in-line circulator at moderate flow rates. The resilient mounting configuration helps reduce vibration transmission to the piping and structure. Connection sizes of 2-1/2 inches and 3 inches NPT make this unit compatible with common larger-diameter hydronic mains. It is rated to handle fluid temperatures up to 225 degrees F and system pressures up to 125 psig, fitting it for most standard hydronic heating applications.

Key Features

• Bronze-fitted cast iron construction for durability in hydronic service
• 110 GPM flow rate with 16-foot maximum head
• 2-1/2 inch and 3 inch NPT connection sizes for larger hydronic mains
• Resilient mounting to reduce vibration and noise transmission
• Rated to 225 degrees F and 125 psig for standard hydronic systems
• Ships less flanges — flanges must be ordered separately

Compatibility

Designed as an OEM-style in-line circulator replacement for hydronic heating and cooling systems requiring 2-1/2 inch or 3 inch NPT connections at up to 110 GPM and 125 psig.

Installation Notes

Installation should be performed by a licensed plumber or mechanical contractor in accordance with applicable mechanical and plumbing codes. Isolate and depressurize the system and allow fluid to cool before removing the existing pump. Flanges are not included and must be sourced separately prior to installation. Verify voltage and phase at the disconnect before wiring the motor.

Technical Specifications

• Model Series: Armstrong S-45
• Item Type: Circulator Pump, In-Line, Less Flange
• Material: Cast Iron with Bronze Fittings
• HP Rating: 1/4 HP
• Flow Rate: 110 GPM
• Maximum Head: 16 feet
• Voltage: 115 VAC
• Phase: 1-phase
• Frequency: 60 Hz
• RPM: 1800 rpm
• Connection Size: 2-1/2 inches and 3 inches NPT
• Dimensions: 15.75 inches W x 13.5 inches H
• Pressure Rating: 125 psig
• Temperature Rating: 225 degrees F
• Mounting: Resilient

Standard Information

• Brand: LOCHINVAR
• Manufacturer Part Number: 174036MF-113